Merge branch 'develop'

.gitignore

@@ -7,6 +7,8 @@ bii/cmake/*
 bii/deps/*
 build/vc2013-bkl/*
 build/makefile-bkl/*
+build/compile_commands.json
+build/install_manifest.txt
 *.obj
 *.exe
 *.pdb
@@ -46,3 +48,4 @@ cmake_install.cmake
 
 *.db
 *.opendb
+.vscode

.travis.yml

@@ -59,7 +59,7 @@ matrix:
             - llvm-toolchain-precise 
 
 before_install:
-  - git clone --depth=1 --branch=hotfix-1.5 https://github.com/qPCR4vir/nana-demo.git ../nana-demo
+  - git clone --depth=1 --branch=develop https://github.com/qPCR4vir/nana-demo.git ../nana-demo
   - export PATH="$HOME/bin:$PATH"
   #- mkdir ~/bin #it seemd that a bin already exists from 20170901 
   - wget --no-check-certificate --no-clobber -O /tmp/tools/cmake https://cmake.org/files/v3.4/cmake-3.4.0-rc3-Linux-x86_64.sh || true
@@ -87,7 +87,7 @@ script:
   # we are in "... nana/../nana_lib/bin/" we need "../../nana" to get the CMakeList.txt of nana.
   # Thus, make install will put the nana.lib in "... nana/../nana_lib/lib/"
   # and the includes in "... nana/../nana_lib/include/"
-  - cmake -G"Unix Makefiles" ../../nana -DCMAKE_INSTALL_PREFIX=.. -DNANA_CMAKE_ENABLE_JPEG=ON -DNANA_CMAKE_ENABLE_PNG=OFF -DNANA_CMAKE_ENABLE_AUDIO=OFF -DNANA_CMAKE_FIND_BOOST_FILESYSTEM=ON -DNANA_CMAKE_BOOST_FILESYSTEM_FORCE=OFF  -DNANA_CMAKE_AUTOMATIC_GUI_TESTING=ON
+  - cmake -G"Unix Makefiles" ../../nana -DCMAKE_INSTALL_PREFIX=.. -DNANA_CMAKE_ENABLE_JPEG=ON -DNANA_CMAKE_ENABLE_PNG=OFF -DNANA_CMAKE_BUILD_DEMOS=ON -DNANA_CMAKE_ENABLE_AUDIO=OFF -DNANA_CMAKE_FIND_BOOST_FILESYSTEM=ON -DNANA_CMAKE_BOOST_FILESYSTEM_FORCE=OFF  -DNANA_CMAKE_AUTOMATIC_GUI_TESTING=ON
   - make install
   - ls
   - cd ..

CMakeLists.txt

@@ -1,4 +1,4 @@
-# CMake configuration for Nana
+# CMake configuration for Nana
 # Author: Andrew Kornilov(https://github.com/ierofant)
 # Contributors:
 #   Jinhao
@@ -59,20 +59,14 @@ option(NANA_CMAKE_BOOST_FILESYSTEM_FORCE "Force use of Boost filesystem if avail
 ########### Compatibility with CMake 3.1
 if(POLICY CMP0054)
   # http://www.cmake.org/cmake/help/v3.1/policy/CMP0054.html
-  cmake_policy(SET CMP0054 OLD)
+  cmake_policy(SET CMP0054 NEW)
 endif()
-if(POLICY CMP0004)    # ignore leading space
-  # http://www.cmake.org/cmake/help/v3.0/policy/CMP0004.html
-  cmake_policy(SET CMP0004 OLD)
-endif()
-
-set(CMAKE_DEBUG_POSTFIX "_d")
 
 ########### OS
 
 if(WIN32)
     add_definitions(-DWIN32)
-    #Global MSVC definitions. You may prefer the hand-tuned sln and projects from the nana repository.
+    # Global MSVC definitions. You may prefer the hand-tuned sln and projects from the nana repository.
     if(MSVC)
         option(MSVC_USE_MP "Set to ON to build nana with the /MP option (Visual Studio 2005 and above)." ON)
         option(MSVC_USE_STATIC_RUNTIME "Set to ON to build nana with the /MT(d) option." ON)
@@ -80,7 +74,7 @@ if(WIN32)
         # Change the MSVC Compiler flags
         if(MSVC_USE_MP)
             set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
-        endif(MSVC_USE_MP)
+        endif()
 
         if(MSVC_USE_STATIC_RUNTIME)
             foreach(flag
@@ -92,32 +86,26 @@ if(WIN32)
                     string(REGEX REPLACE "/MD" "/MT" ${flag} "${${flag}}")
                 endif()
             endforeach()
-        endif(MSVC_USE_STATIC_RUNTIME)
+        endif()
-    endif(MSVC)
+    endif()
 
     if(MINGW)
         if(NANA_CMAKE_ENABLE_MINGW_STD_THREADS_WITH_MEGANZ)
             add_definitions(-DSTD_THREAD_NOT_SUPPORTED)
             add_definitions(-DNANA_ENABLE_MINGW_STD_THREADS_WITH_MEGANZ)
-        endif(NANA_CMAKE_ENABLE_MINGW_STD_THREADS_WITH_MEGANZ)
+        endif()
-    endif(MINGW)
+    endif()
 
-    if (MSVC)
+    if(MSVC)
-        set (DLLTOOL OFF)
+        set(DLLTOOL OFF)
-    else ()
+    else()
         # mingw: If dlltool is found the def and lib file will be created
-        message (STATUS "Detecting dlltool")
         find_program (DLLTOOL dlltool)
-        if (DLLTOOL)
+        if(NOT DLLTOOL)
-            message (STATUS "Found dlltool: ${DLLTOOL}")
+            message(WARNING "dlltool not found. Skipping import library generation.")
-        else ()
+        endif()
-            message (WARNING "dlltool not found. Skipping import library generation.")
+    endif()
-        endif (DLLTOOL)
+endif()
-    endif (MSVC)
-
-endif(WIN32)
-
-
 
 if(APPLE)
     add_definitions(-DAPPLE)
@@ -126,17 +114,16 @@ if(APPLE)
     set(ENABLE_AUDIO OFF)
 elseif(UNIX)
     add_definitions(-Dlinux)
-    message("added -D linux")
+endif()
-endif(APPLE)
 
 if(UNIX)
     list(APPEND NANA_LINKS -lX11)
-    find_package(Freetype)
+    include(FindFreetype)
-    if (FREETYPE_FOUND)
+    if(FREETYPE_FOUND)
         include_directories( ${FREETYPE_INCLUDE_DIRS})
-        list(APPEND NANA_LINKS -lXft)
+        list(APPEND NANA_LINKS -lXft -lfontconfig)
-    endif(FREETYPE_FOUND)
+    endif()
-endif(UNIX)
+endif()
 
 
 ########### Compilers
@@ -152,44 +139,31 @@ endif(UNIX)
 #
 #
 # see at end of:  https://gcc.gnu.org/onlinedocs/libstdc++/manual/using_dynamic_or_shared.html
-if(CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")    # Clang || GNU
+#
-
+if(CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
-    if  ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+    if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
-     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++14 -Wall -g")       # Clang
+        set(CMAKE_CXX_FLAGS "-std=gnu++14 -Wall")
-
+    else()
-    else ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+        set(CMAKE_CXX_FLAGS "-std=c++14 -Wall")
-          set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14  -Wall -g")       # GNU
+    endif()
-
+endif()
-    endif("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
-
-endif(CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
-
-# enable static linkage     # GNU || CLang not MinGW
-if(CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") #  AND NOT MINGW
 
+if(CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
     if(NANA_CMAKE_SHARED_LIB)
         list(APPEND NANA_LINKS -lgcc -lstdc++ -pthread)
     else()
-        set(CMAKE_EXE_LINKER_FLAGS "-static-libgcc -static-libstdc++  -pthread")
+        set(CMAKE_EXE_LINKER_FLAGS "-static -pthread")
-        # message("Setting NANA_LINKS to -static-libgcc -static-libstdc++  -pthread or ${NANA_LINKS}")
+        set(CMAKE_EXE_LINKER_FLAGS_RELEASE "-s")
-    endif(NANA_CMAKE_SHARED_LIB)
+    endif()
 
-    if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.3)
+    if(NOT CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.3)
-                                                                         # IS_GNUCXX < 5.3
-    else(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.3)
-
-        # set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -lstdc++fs")    # IS_GNUCXX 5.3 or more
         list(APPEND NANA_LINKS -lstdc++fs)
+    endif()
+endif()
 
-    endif(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 5.3)
+if(APPLE AND "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
-
+    list(APPEND NANA_LINKS -stdlib=libstdc++)
-endif(CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang") #  AND NOT MINGW
+endif()
-
-
-if (APPLE AND "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")                    # APPLE Clang
-  # set (CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -stdlib=libstdc++")
-  list(APPEND NANA_LINKS -stdlib=libstdc++)
-endif ()
 
 
 ############# Optional libraries
@@ -198,69 +172,67 @@ endif ()
 if(NANA_CMAKE_ENABLE_PNG)
     if(NANA_CMAKE_LIBPNG_FROM_OS)
         find_package(PNG)
-        if (PNG_FOUND)
+        if(PNG_FOUND)
-            include_directories( ${PNG_INCLUDE_DIRS})
+            include_directories(${PNG_INCLUDE_DIRS})
             list(APPEND NANA_LINKS ${PNG_LIBRARIES})
-            add_definitions("-DNANA_ENABLE_PNG"
+            add_definitions(-DNANA_ENABLE_PNG -DUSE_LIBPNG_FROM_OS)
-                            "-DUSE_LIBPNG_FROM_OS")
+        endif()
-        endif(PNG_FOUND)
     else()
         add_definitions(-DNANA_ENABLE_PNG)
-    endif(NANA_CMAKE_LIBPNG_FROM_OS)
+    endif()
-endif(NANA_CMAKE_ENABLE_PNG)
+endif()
 
 # Find JPEG
 if(NANA_CMAKE_ENABLE_JPEG)
     add_definitions(-DNANA_ENABLE_JPEG)
     if(NANA_CMAKE_LIBJPEG_FROM_OS)
         find_package(JPEG)
-        if (JPEG_FOUND)
+        if(JPEG_FOUND)
             include_directories( ${JPEG_INCLUDE_DIR})
             list(APPEND NANA_LINKS ${JPEG_LIBRARY})
-            add_definitions("-DNANA_ENABLE_JPEG"
+            add_definitions(-DNANA_ENABLE_JPEG -DUSE_LIBJPEG_FROM_OS)
-                            "-DUSE_LIBJPEG_FROM_OS")
+        endif()
-        endif(JPEG_FOUND)
     else()
         add_definitions(-DNANA_ENABLE_JPEG)
-    endif(NANA_CMAKE_LIBJPEG_FROM_OS)
+    endif()
-endif(NANA_CMAKE_ENABLE_JPEG)
+endif()
 
 # Find ASOUND
 if(NANA_CMAKE_ENABLE_AUDIO)
     add_definitions(-DNANA_ENABLE_AUDIO)
     if(UNIX)
         find_package(ASOUND)
-        if (ASOUND_FOUND)
+        if(ASOUND_FOUND)
-            include_directories( ${ASOUND_INCLUDE_DIRS})
+            include_directories(${ASOUND_INCLUDE_DIRS})
             list(APPEND NANA_LINKS -lasound)
-        else(ASOUND_FOUND)
+        else()
             message(FATAL_ERROR "libasound is not found")
-        endif(ASOUND_FOUND)
+        endif()
-    endif(UNIX)
+    endif()
-endif(NANA_CMAKE_ENABLE_AUDIO)
+endif()
 
 # Find/Select filesystem
-if (NANA_CMAKE_NANA_FILESYSTEM_FORCE)
+if(NANA_CMAKE_NANA_FILESYSTEM_FORCE)
     add_definitions(-DNANA_FILESYSTEM_FORCE)
-elseif (NANA_CMAKE_STD_FILESYSTEM_FORCE)
+elseif(NANA_CMAKE_STD_FILESYSTEM_FORCE)
     add_definitions(-DSTD_FILESYSTEM_FORCE)
-elseif (NANA_CMAKE_FIND_BOOST_FILESYSTEM OR NANA_CMAKE_BOOST_FILESYSTEM_FORCE)
+elseif(NANA_CMAKE_FIND_BOOST_FILESYSTEM OR NANA_CMAKE_BOOST_FILESYSTEM_FORCE)
-    if (NANA_CMAKE_BOOST_FILESYSTEM_FORCE)
+    if(NANA_CMAKE_BOOST_FILESYSTEM_FORCE)
         add_definitions(-DBOOST_FILESYSTEM_FORCE)
-    endif(NANA_CMAKE_BOOST_FILESYSTEM_FORCE)
+    endif()
     # https://cmake.org/cmake/help/git-master/module/FindBoost.html
     # Implicit dependencies such as Boost::filesystem requiring Boost::system will be automatically detected and satisfied,
     # even if system is not specified when using find_package and if Boost::system is not added to target_link_libraries.
     # If using Boost::thread, then Thread::Thread will also be added automatically.
     find_package(Boost COMPONENTS filesystem)
-    if (Boost_FOUND)
+    if(Boost_FOUND)
         add_definitions(-DBOOST_FILESYSTEM_AVAILABLE)
         include_directories(SYSTEM "${Boost_INCLUDE_DIR}")
-        list(APPEND NANA_LINKS ${Boost_LIBRARIES})    ######  FIRST !!!!!!!!!!!!!!!!!    add   is not first
+        list(APPEND NANA_LINKS ${Boost_LIBRARIES})
-    endif (Boost_FOUND)
+    endif()
     set(Boost_USE_STATIC_LIBS ON)
-    set(Boost_USE_STATIC_RUNTIME ON)  # ??
+    set(Boost_USE_STATIC_RUNTIME ON)
-endif (NANA_CMAKE_NANA_FILESYSTEM_FORCE)
+endif()
 
 
 ######## Nana options
@@ -268,11 +240,11 @@ endif (NANA_CMAKE_NANA_FILESYSTEM_FORCE)
 add_definitions(-DNANA_IGNORE_CONF)
 if(NANA_CMAKE_VERBOSE_PREPROCESSOR)
     add_definitions(-DVERBOSE_PREPROCESSOR)
-endif(NANA_CMAKE_VERBOSE_PREPROCESSOR)
+endif()
 if(NANA_CMAKE_AUTOMATIC_GUI_TESTING)
-     add_definitions(-DNANA_AUTOMATIC_GUI_TESTING)
+    add_definitions(-DNANA_AUTOMATIC_GUI_TESTING)
-     enable_testing ()
+    enable_testing()
-endif(NANA_CMAKE_AUTOMATIC_GUI_TESTING)
+endif()
 
 
 #######################     Main setting of Nana sources, targets and install
@@ -280,39 +252,41 @@ endif(NANA_CMAKE_AUTOMATIC_GUI_TESTING)
 set(NANA_SOURCE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/source)
 set(NANA_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/include)
 #    collect all source sub-directories in a list to avoid duplication here
-set(NANA_SOURCE_SUBDIRS              /.
+set(NANA_SOURCE_SUBDIRS             /.
-                                     /detail
+                                    /detail
-                                     /filesystem
+                                    /filesystem
-                                     /gui
+                                    /gui
-                                     /gui/detail
+                                    /gui/detail
-                                     /gui/widgets
+                                    /gui/widgets
-                                     /gui/widgets/skeletons
+                                    /gui/widgets/skeletons
-                                     /paint
+                                    /paint
-                                     /paint/detail
+                                    /paint/detail
-                                     /system
+                                    /system
-                                     /threads      )
+                                    /threads
+                                    )
 if(NANA_CMAKE_ENABLE_AUDIO)
-    list(APPEND NANA_SOURCE_SUBDIRS
+    list(APPEND NANA_SOURCE_SUBDIRS /audio
-                                     /audio
+                                    /audio/detail
-                                     /audio/detail  )
+                                    )
-endif(NANA_CMAKE_ENABLE_AUDIO)
+endif()
 # collect all source files in the source-sub-dir
 # To show .h files in Visual Studio, add them to the list of sources in add_executable / add_library
 # and Use SOURCE_GROUP if all your sources are in the same directory
 foreach(subdir ${NANA_SOURCE_SUBDIRS})
-    aux_source_directory(${NANA_SOURCE_DIR}${subdir} sources)
+    aux_source_directory(${NANA_SOURCE_DIR}${subdir} SOURCES)
-        # message("Subir:  ${subdir}") # message("Files:  ${sources}")
+endforeach()
-endforeach(subdir ${NANA_SOURCE_SUBDIRS})
 
-if ("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
+if("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
     add_definitions(-fmax-errors=3)
-endif ("${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU")
+endif()
+
+set(CMAKE_DEBUG_POSTFIX "_d")
 
 if(NANA_CMAKE_SHARED_LIB)
-    add_library(${PROJECT_NAME} SHARED ${sources} )
+    add_library(${PROJECT_NAME} SHARED ${SOURCES})
 else()
-    add_library(${PROJECT_NAME} STATIC ${sources} )
+    add_library(${PROJECT_NAME} STATIC ${SOURCES})
-endif(NANA_CMAKE_SHARED_LIB)
+endif()
 
 target_include_directories(${PROJECT_NAME} PUBLIC ${NANA_INCLUDE_DIR})
 target_link_libraries(${PROJECT_NAME} ${NANA_LINKS})
@@ -324,27 +298,22 @@ target_link_libraries(${PROJECT_NAME} ${NANA_LINKS})
 # and the includes files "include/nana/" in DESTDIR/CMAKE_INSTALL_PREFIX/include/nana/
 # unfortunatelly install() is still ignored by CLion:
 # https://intellij-support.jetbrains.com/hc/en-us/community/posts/205822949-CMake-install-isn-t-supported-
-install(TARGETS ${PROJECT_NAME}   ARCHIVE DESTINATION lib
+install(TARGETS ${PROJECT_NAME} ARCHIVE DESTINATION lib
-                                  LIBRARY DESTINATION lib
+                                LIBRARY DESTINATION lib
-                                  RUNTIME DESTINATION bin)
+                                RUNTIME DESTINATION bin)
 
 # http://stackoverflow.com/questions/33788729/how-do-i-get-clion-to-run-an-install-target
 if(NANA_CLION) # the Clion IDE don't reconize the install target
     add_custom_target(install_${PROJECT_NAME}
-            $(MAKE) install
+                      $(MAKE) install
-            DEPENDS ${PROJECT_NAME}
+                      DEPENDS ${PROJECT_NAME}
-            COMMENT "Installing ${PROJECT_NAME}")
+                      COMMENT "Installing ${PROJECT_NAME}")
 endif()
 
-set_property( TARGET ${PROJECT_NAME} PROPERTY CXX_STANDARD 14 )
+if(NANA_CMAKE_SHARED_LIB)
-
+    if(WIN32)
-if (NANA_CMAKE_SHARED_LIB)
+        set(CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
-    if (WIN32)
+        if(DLLTOOL)
-        set (CMAKE_WINDOWS_EXPORT_ALL_SYMBOLS ON)
-
-        if (DLLTOOL)
-            #message(STATUS "CMAKE_CURRENT_BINARY_DIR = ${CMAKE_CURRENT_BINARY_DIR}")
-
             #generate the lib and def files needed by msvc
             set_target_properties (${PROJECT_NAME} PROPERTIES OUTPUT_NAME "${PROJECT_NAME}"
                                                    ARCHIVE_OUTPUT_NAME    "${PROJECT_NAME}"
@@ -359,42 +328,40 @@ if (NANA_CMAKE_SHARED_LIB)
 
             install(FILES "${CMAKE_CURRENT_BINARY_DIR}/lib${PROJECT_NAME}.def"
                           "${CMAKE_CURRENT_BINARY_DIR}/lib${PROJECT_NAME}.lib" DESTINATION lib)
-        endif ()
+        endif()
-
+    endif()
-    endif (WIN32)
+endif()
-endif (NANA_CMAKE_SHARED_LIB)
-
-message ("")
 
+message("")
 message("The compiled Nana library will be installed in ${CMAKE_INSTALL_PREFIX}/lib")
 # Install the include directories too.
 if(NANA_CMAKE_INSTALL_INCLUDES)
-    install(DIRECTORY ${NANA_INCLUDE_DIR}/nana DESTINATION include )
+    install(DIRECTORY ${NANA_INCLUDE_DIR}/nana DESTINATION include)
     message("The Nana include files will be installed in ${CMAKE_INSTALL_PREFIX}/include")
-endif(NANA_CMAKE_INSTALL_INCLUDES)
+endif()
 
 
 # Just for information:
-message ("")
+message("")
-message ( "CMAKE_CXX_COMPILER_ID     = "  ${CMAKE_CXX_COMPILER_ID})
+message("CMAKE_CXX_COMPILER_ID     = " ${CMAKE_CXX_COMPILER_ID})
-message ( "COMPILER_IS_CLANG         = "  ${COMPILER_IS_CLANG})
+message("COMPILER_IS_CLANG         = " ${COMPILER_IS_CLANG})
-message ( "CMAKE_COMPILER_IS_GNUCXX  = "  ${CMAKE_COMPILER_IS_GNUCXX})
+message("CMAKE_COMPILER_IS_GNUCXX  = " ${CMAKE_COMPILER_IS_GNUCXX})
-message ( "CMAKE_CXX_FLAGS           = "  ${CMAKE_CXX_FLAGS})
+message("CMAKE_CXX_FLAGS           = " ${CMAKE_CXX_FLAGS})
-message ( "CMAKE_EXE_LINKER_FLAGS    = "  ${CMAKE_EXE_LINKER_FLAGS})
+message("CMAKE_EXE_LINKER_FLAGS    = " ${CMAKE_EXE_LINKER_FLAGS})
-message ( "CMAKE_STATIC_LINKER_FLAGS = "  ${CMAKE_STATIC_LINKER_FLAGS})
+message("CMAKE_STATIC_LINKER_FLAGS = " ${CMAKE_STATIC_LINKER_FLAGS})
-message ( "NANA_LINKS                = "  ${NANA_LINKS})
+message("NANA_LINKS                = " ${NANA_LINKS})
-message ( "DESTDIR                   = "  ${DESTDIR})
+message("DESTDIR                   = " ${DESTDIR})
-message ( "CMAKE_INSTALL_PREFIX      = "  ${CMAKE_INSTALL_PREFIX})
+message("CMAKE_INSTALL_PREFIX      = " ${CMAKE_INSTALL_PREFIX})
-message ( "NANA_INCLUDE_DIR          = "  ${NANA_INCLUDE_DIR})
+message("NANA_INCLUDE_DIR          = " ${NANA_INCLUDE_DIR})
-message ( "CMAKE_CURRENT_SOURCE_DIR  = "  ${CMAKE_CURRENT_SOURCE_DIR})
+message("CMAKE_CURRENT_SOURCE_DIR  = " ${CMAKE_CURRENT_SOURCE_DIR})
-message ( "NANA_CMAKE_ENABLE_AUDIO   = "  ${NANA_CMAKE_ENABLE_AUDIO})
+message("NANA_CMAKE_ENABLE_AUDIO   = " ${NANA_CMAKE_ENABLE_AUDIO})
-message ( "NANA_CMAKE_SHARED_LIB     = "  ${NANA_CMAKE_SHARED_LIB})
+message("NANA_CMAKE_SHARED_LIB     = " ${NANA_CMAKE_SHARED_LIB})
-message ( "NANA_CLION              = "  ${NANA_CLION})
+message("NANA_CLION                = " ${NANA_CLION})
-message ( "CMAKE_MAKE_PROGRAM      = "  ${CMAKE_MAKE_PROGRAM})
+message("CMAKE_MAKE_PROGRAM        = " ${CMAKE_MAKE_PROGRAM})
 
-message ( "NANA_CMAKE_FIND_BOOST_FILESYSTEM         = "  ${NANA_CMAKE_FIND_BOOST_FILESYSTEM})
+message("NANA_CMAKE_FIND_BOOST_FILESYSTEM         = " ${NANA_CMAKE_FIND_BOOST_FILESYSTEM})
-message ( "NANA_CMAKE_BOOST_FILESYSTEM_FORCE        = "  ${NANA_CMAKE_BOOST_FILESYSTEM_FORCE})
+message("NANA_CMAKE_BOOST_FILESYSTEM_FORCE        = " ${NANA_CMAKE_BOOST_FILESYSTEM_FORCE})
-message ( "NANA_CMAKE_BOOST_FILESYSTEM_INCLUDE_ROOT = "  ${NANA_CMAKE_BOOST_FILESYSTEM_INCLUDE_ROOT})
+message("NANA_CMAKE_BOOST_FILESYSTEM_INCLUDE_ROOT = " ${NANA_CMAKE_BOOST_FILESYSTEM_INCLUDE_ROOT})
-message ( "NANA_CMAKE_BOOST_FILESYSTEM_LIB          = "  ${NANA_CMAKE_BOOST_FILESYSTEM_LIB})
+message("NANA_CMAKE_BOOST_FILESYSTEM_LIB          = " ${NANA_CMAKE_BOOST_FILESYSTEM_LIB})
-message ( "NANA_CMAKE_AUTOMATIC_GUI_TESTING         = "  ${NANA_CMAKE_AUTOMATIC_GUI_TESTING})
+message("NANA_CMAKE_AUTOMATIC_GUI_TESTING         = " ${NANA_CMAKE_AUTOMATIC_GUI_TESTING})
-message ( "NANA_CMAKE_ADD_DEF_AUTOMATIC_GUI_TESTING = "  ${NANA_CMAKE_ADD_DEF_AUTOMATIC_GUI_TESTING})
+message("NANA_CMAKE_ADD_DEF_AUTOMATIC_GUI_TESTING = " ${NANA_CMAKE_ADD_DEF_AUTOMATIC_GUI_TESTING})

include/nana/c++defines.hpp

@@ -1,7 +1,7 @@
 /**
  *	Predefined Symbols for C++
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2016-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2016-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -171,9 +171,9 @@
 	#endif
 #endif
 
-//Assume the std::thread is not implement on MinGW
+//Assume the std::thread is not implemented on MinGW,
+//unless it was compiled with POSIX threading support.
 //But some toolchains may implement std::thread.
-// it seems that MinGW 6.3 and 7.1 have std::thread
 #ifdef NANA_MINGW
 #	ifndef STD_THREAD_NOT_SUPPORTED
 #		define STD_THREAD_NOT_SUPPORTED
@@ -222,7 +222,10 @@
 #    undef STD_FILESYSTEM_NOT_SUPPORTED
 #  endif
 #  if __has_include(<mutex>) 
-#    undef STD_THREAD_NOT_SUPPORTED
+#    if !(defined(NANA_MINGW) && !defined(_GLIBCXX_HAS_GTHREADS))
+//See the comment above regarding MinGW's threading support
+#      undef STD_THREAD_NOT_SUPPORTED
+#    endif
 #  endif
 #endif
 

include/nana/filesystem/filesystem.hpp

@@ -1,7 +1,7 @@
 /**
  *	A ISO C++ filesystem Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -55,6 +55,36 @@
 #define NANA_USING_BOOST_FILESYSTEM 1
 #   include <chrono>
 #   include <boost/filesystem.hpp>
+// dont include generic_u8string
+// http://www.boost.org/doc/libs/1_66_0/boost/filesystem/path.hpp
+// enable directory_iterator C++11 range-base for 
+// http://www.boost.org/doc/libs/1_66_0/boost/filesystem/operations.hpp
+// but travis come with an oooold version of boost
+// NOT enable directory_iterator C++11 range-base for
+// http://www.boost.org/doc/libs/1_54_0/boost/filesystem/operations.hpp
+namespace boost
+{
+	namespace filesystem
+	{
+
+		//  enable directory_iterator C++11 range-base for statement use  --------------------//
+
+		//  begin() and end() are only used by a range-based for statement in the context of
+		//  auto - thus the top-level const is stripped - so returning const is harmless and
+		//  emphasizes begin() is just a pass through.
+		inline const directory_iterator& begin(const directory_iterator& iter) BOOST_NOEXCEPT
+		{
+			return iter;
+		}
+
+		inline directory_iterator end(const directory_iterator&) BOOST_NOEXCEPT
+		{
+			return directory_iterator();
+		}
+
+	}  // namespace filesystem
+}   
+
 
 // add boost::filesystem into std::experimental::filesystem
 namespace std {
@@ -75,6 +105,16 @@ namespace std {
 				socket = boost::filesystem::file_type::socket_file,
 				unknown = boost::filesystem::file_type::type_unknown,
 			};
+			/// enable directory_iterator range-based for statements
+			//inline directory_iterator begin(directory_iterator iter) noexcept
+			//{
+			//	return iter;
+			//}
+
+			//inline directory_iterator end(const directory_iterator&) noexcept
+			//{
+			//	return {};
+			//}
 		} // filesystem
 	} // experimental
 } // std

include/nana/filesystem/filesystem_ext.hpp

@@ -1,6 +1,6 @@
 /**
 *	Nana C++ Library(http://www.nanapro.org)
-*	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+*	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
 *
 *	Distributed under the Boost Software License, Version 1.0.
 *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -16,6 +16,7 @@
 #define NANA_FILESYSTEM_EXT_HPP
 
 #include <nana/filesystem/filesystem.hpp>
+#include <nana/deploy.hpp>
 
 namespace nana 
 {
@@ -34,6 +35,16 @@ namespace filesystem_ext
  
 std::experimental::filesystem::path path_user();    ///< extention ?
 
+/// workaround Boost not having path.generic_u8string() - a good point for http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/p0251r0.pdf
+inline std::string generic_u8string(const std::experimental::filesystem::path& p) 
+{ 
+  #if NANA_USING_BOOST_FILESYSTEM
+	 return nana::to_utf8(p.generic_wstring());
+  #else
+	 return p.generic_u8string();
+  #endif
+}
+
 inline bool is_directory(const std::experimental::filesystem::directory_entry& dir) noexcept
 {
     return is_directory(dir.status());

include/nana/gui/basis.hpp

@@ -4,7 +4,7 @@
  *
  *	Basis Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -30,6 +30,15 @@ namespace nana
 		struct native_drawable_impl{};
 	}
 
+	struct accel_key
+	{
+		char key;
+		bool case_sensitive{ false };
+		bool alt{ false };
+		bool ctrl{ false };
+		bool shift{ false };
+	};
+
 	enum class checkstate
 	{
 		unchecked, checked, partial
@@ -288,6 +297,19 @@ that return a corresponding nana::appearance with predefined values.
 		virtual bool visible() const = 0;
 	};//end class caret_interface
 
+	/// Interface for scroll operations
+	/**
+	 * This interface provides methods to operate the scrollbars that are contained
+	 * in a specific widget, such as listbox and treebox
+	 */
+	class scroll_operation_interface
+	{
+	public:
+		virtual ~scroll_operation_interface() = default;
+
+		virtual bool visible(bool vert) const = 0;
+	};
+
 	namespace parameters
 	{
 		/// The system-wide parameters for mouse wheel

include/nana/gui/detail/bedrock.hpp

@@ -1,7 +1,7 @@
 /**
  *	A Bedrock Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -27,6 +27,7 @@ namespace detail
 	struct	basic_window;
 	class	window_manager;
 
+	struct window_platform_assoc;
 	
 	/// @brief	fundamental core component, it provides an abstraction to the OS platform and some basic functions.
 	class bedrock
@@ -73,6 +74,11 @@ namespace detail
 
 		//Closes the windows which are associated with the specified thread. If the given thread_id is 0, it closes all windows
 		void close_thread_window(unsigned thread_id);
+
+	public:
+		//Platform-dependent functions
+		static void delete_platform_assoc(window_platform_assoc*);
+		void keyboard_accelerator(native_window_type, const accel_key&, const std::function<void()>&);
 	public:
 		void event_expose(core_window_t *, bool exposed);
 		void event_move(core_window_t*, int x, int y);

include/nana/gui/detail/effects_renderer.hpp

@@ -1,3 +1,15 @@
+/*
+*	Effects Renderer
+*	Nana C++ Library(http://www.nanapro.org)
+*	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
+*
+*	Distributed under the Boost Software License, Version 1.0.
+*	(See accompanying file LICENSE_1_0.txt or copy at
+*	http://www.boost.org/LICENSE_1_0.txt)
+*
+*	@file: nana/gui/detail/effects_renderer.cpp
+*/
+
 #ifndef NANA_GUI_DETAIL_EFFECTS_RENDERER_HPP
 #define NANA_GUI_DETAIL_EFFECTS_RENDERER_HPP
 #include <nana/gui/effects.hpp>
@@ -76,7 +88,7 @@ namespace nana{
 					nana::rectangle r;
 					for(auto & action : nimbus)
 					{
-						if(_m_edge_nimbus(focused, action.window) && window_layer::read_visual_rectangle(action.window, r))
+						if(_m_edge_nimbus(action.window, focused) && window_layer::read_visual_rectangle(action.window, r))
 						{
 							if (action.window == wd)
 							{
@@ -140,12 +152,17 @@ namespace nana{
 				}
 			}
 		private:
-			static bool _m_edge_nimbus(core_window_t * focused_wd, core_window_t * wd)
+			/// Determines whether the effect will be rendered for the given window.
+			static bool _m_edge_nimbus(core_window_t * const wd, core_window_t * const focused_wd)
 			{
-				if((focused_wd == wd) && (static_cast<unsigned>(wd->effect.edge_nimbus) & static_cast<unsigned>(effects::edge_nimbus::active)))
+				// Don't render the effect if the window is disabled.
-					return true;
+				if (wd->flags.enabled)
-				else if((static_cast<unsigned>(wd->effect.edge_nimbus) & static_cast<unsigned>(effects::edge_nimbus::over)) && (wd->flags.action == mouse_action::hovered))
+				{
-					return true;
+					if ((focused_wd == wd) && (static_cast<unsigned>(wd->effect.edge_nimbus) & static_cast<unsigned>(effects::edge_nimbus::active)))
+						return true;
+					else if ((static_cast<unsigned>(wd->effect.edge_nimbus) & static_cast<unsigned>(effects::edge_nimbus::over)) && (wd->flags.action == mouse_action::hovered))
+						return true;
+				}
 				return false;
 			}
 

include/nana/gui/detail/general_events.hpp

@@ -1,7 +1,7 @@
 /**
 *	Definition of General Events
 *	Nana C++ Library(http://www.nanapro.org)
-*	Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
+*	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
 *
 *	Distributed under the Boost Software License, Version 1.0.
 *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -460,8 +460,9 @@ namespace nana
 		::nana::window window_handle;	///< A handle to the event window
 		mutable wchar_t key;	///< the key corresponding to the key pressed
 		mutable bool ignore;	    ///< this member is only available for key_char event, set 'true' to ignore the input.
-		bool ctrl;	                ///< keyboard Ctrl is pressed?
+		bool alt;					///< it is set to indicate the modifier key Alt just prior to the event.
-		bool shift;	                ///< keyboard Shift is pressed
+		bool ctrl;	                ///< it is set to indicate the modifier key Ctrl just prior to the event.
+		bool shift;	                ///< it is set to indicate the modifier key Shift just prior to the event.
 	};
 
 	struct arg_move : public event_arg

include/nana/gui/programming_interface.hpp

@@ -301,6 +301,8 @@ namespace API
 	void window_size(window, const size&);
 	size window_outline_size(window);
 	void window_outline_size(window, const size&);
+
+	nana::optional<rectangle> window_rectangle(window);
 	bool get_window_rectangle(window, rectangle&);
 	bool track_window_size(window, const size&, bool true_for_max);   ///< Sets the minimum or maximum tracking size of a window.
 	void window_enabled(window, bool);
@@ -434,6 +436,8 @@ namespace API
 	 * widget by the content extent. 
 	 */
 	optional<std::pair<::nana::size, ::nana::size>> content_extent(window wd, unsigned limited_px, bool limit_width);
+
+	unsigned screen_dpi(bool x_requested);
 }//end namespace API
 
 }//end namespace nana

include/nana/gui/widgets/checkbox.hpp

@@ -1,7 +1,7 @@
 /**
  *	A CheckBox Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -100,6 +100,7 @@ namespace drawerbase
 			event_handle eh_keyboard;
 		};
 	public:
+		constexpr static const std::size_t npos = static_cast<std::size_t>(-1);
 		~radio_group();
 		void add(checkbox&);
 		std::size_t checked() const;       ///< Retrieves the index of the checkbox which is checked.

include/nana/gui/widgets/form.hpp

@@ -1,7 +1,7 @@
 /**
  *	A Form Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2015 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -68,6 +68,8 @@ namespace nana
 
 		void modality() const;
 		void wait_for_this();
+
+		void keyboard_accelerator(const accel_key&, const std::function<void()>& fn);
 	};
 
 	class nested_form

include/nana/gui/widgets/group.hpp

@@ -1,7 +1,7 @@
 /**
  *	A group widget implementation
  *	Nana C++ Library(http://www.nanaro.org)
- *	Copyright(C) 2015 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2015-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -28,6 +28,7 @@ namespace nana{
 		struct implement;
 	public:
 		using field_reference = place::field_reference;
+		constexpr static const std::size_t npos = static_cast<std::size_t>(-1);
 
 		/// The default construction
 		group();
@@ -63,10 +64,14 @@ namespace nana{
 
 		group& enable_format_caption(bool format);
 
-		group& collocate() throw();
+		group& collocate() noexcept;
-		group& div(const char* div_str) throw();
+		group& div(const char* div_str) noexcept;
 		field_reference operator[](const char* field);
 
+		void field_display(const char* field_name, bool display); ///<Displays/Discards an existing field.
+		bool field_display(const char* field_name) const;	///<Determines whether the specified field is displayed.
+		void erase(window handle);				///< Erases a window from field.
+		
 		template<typename Widget, typename ...Args>
 		Widget* create_child(const char* field, Args && ... args)
 		{

include/nana/gui/widgets/listbox.hpp

@@ -1,7 +1,7 @@
 /**
  *	A List Box Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -94,6 +94,12 @@ namespace nana
 				 */
 				virtual void fit_content(unsigned maximum = 0) noexcept = 0;
 
+				/// Sets an exclusive font for the column
+				virtual void typeface(const paint::font& column_font) = 0;
+
+				/// Returns a font
+				virtual paint::font typeface() const noexcept = 0;
+
 				/// Determines the visibility state of the column
 				/**
 				 * @return true if the column is visible, false otherwise
@@ -987,9 +993,13 @@ namespace nana
 				cat_proxy(essence*, size_type pos) noexcept;
 				cat_proxy(essence*, category_t*) noexcept;
 
-				/// Append an item at abs end of the category, set_value determines whether assign T object to the value of item.
+				/// Append an item at the end of this category using the oresolver to generate the texts to be put in each column.
-				template<typename T>
+                ///
-				item_proxy append(T&& t, bool set_value = false)
+                /// First you have to make sure there is an overload of the operator<<() of the oresolver for the type of the object used here
+                /// If a listbox have a model set, try call append_model instead.
+                template<typename T>
+				item_proxy append(  T&& t,                  ///< Value used by the resolver to generate the texts to be put in each column of the item
+                                    bool set_value = false) ///< determines whether to set the object as the value of this item.
 				{
 					oresolver ores(ess_);
 
@@ -1039,7 +1049,7 @@ namespace nana
 
 				model_guard model();
 
-				/// Appends one item at the end of this category with the specifies text in the column fields
+				/// Appends one item at the end of this category with the specifies texts in the column fields
 				void append(std::initializer_list<std::string> texts_utf8);
 				void append(std::initializer_list<std::wstring> texts);
 
@@ -1194,17 +1204,25 @@ namespace nana
 
 				color_proxy selection_box{ static_cast<color_rgb>(0x3399FF) };	///< Color of selection box border.
 
+
+				std::shared_ptr<paint::font> column_font;	///< Renderer draws column texts with the font if it is not a nullptr.
+
 				/// The max column width which is generated by fit_content is allowed. It is ignored when it is 0, or a max value is passed to fit_content.
 				unsigned max_fit_content{ 0 };
 
-				unsigned min_column_width{ 20   };  ///< def=20 . non counting suspension_width
+				unsigned min_column_width{ 20 };  ///< def=20 . non counting suspension_width
 
-				unsigned suspension_width	{ 8    };  ///<  def= . the trigger will set this to the width if ("...")
+				unsigned suspension_width{ 8 };  ///<  def= . the trigger will set this to the width if ("...")
-				unsigned text_margin		{ 5    };  ///<  def= 5. Additional or extended with added (before) to the text width to determine the cell width. cell_w = text_w + ext_w +1
+				unsigned text_margin{ 5 };  ///<  def= 5. Additional or extended with added (before) to the text width to determine the cell width. cell_w = text_w + ext_w +1
-				unsigned header_height		{ 25   };  ///<  def=25 . header height   header_size
+
-				unsigned item_height_ex		{ 6    };  ///< Set !=0 !!!!  def=6. item_height = text_height + item_height_ex
+				//deprecated
+				//unsigned header_height		{ 25   };  ///<  def=25 . header height   header_size
+
+				unsigned item_height_ex{ 6 };  ///< Set !=0 !!!!  def=6. item_height = text_height + item_height_ex
 				unsigned header_splitter_area_before{ 2 }; ///< def=2. But 4 is better... IMO
-				unsigned header_splitter_area_after { 3 }; ///< def=3. But 4 is better... 
+				unsigned header_splitter_area_after{ 3 }; ///< def=3. But 4 is better...
+				unsigned header_padding_top{ 3 };
+				unsigned header_padding_bottom{ 3 };
 
 				::nana::parameters::mouse_wheel mouse_wheel{}; ///< The number of lines/characters to scroll when vertical/horizontal mouse wheel is moved.
 			};
@@ -1411,6 +1429,8 @@ the nana::detail::basic_window member pointer scheme
 		size_type append_header(std::string text_utf8, unsigned width = 120);
 		size_type append_header(std::wstring text, unsigned width = 120);
 
+		void clear_headers();					///< Removes all the columns.
+
 		cat_proxy append(std::string category);		///< Appends a new category to the end
 		cat_proxy append(std::wstring category);		///< Appends a new category to the end
 		void append(std::initializer_list<std::string> categories); ///< Appends categories to the end
@@ -1521,6 +1541,7 @@ the nana::detail::basic_window member pointer scheme
 		nana::any* _m_anyobj(size_type cat, size_type index, bool allocate_if_empty) const override;
 		drawerbase::listbox::category_t* _m_assoc(std::shared_ptr<nana::detail::key_interface>, bool create_if_not_exists);
 		void _m_erase_key(nana::detail::key_interface*) noexcept;
+		std::shared_ptr<scroll_operation_interface> _m_scroll_operation();
 	};
 }//end namespace nana
 

include/nana/gui/widgets/menubar.hpp

@@ -95,6 +95,7 @@ namespace nana
 		menu& push_back(const std::string&);	///< Appends a new (empty) menu.
 		menu& at(size_t index) const;		    ///< Gets the menu specified by index.
 		std::size_t length() const;		        ///< Number of menus.
+		void clear();							///< Removes all the menus.
 		
 		/// Deselects the menu
 		/**

include/nana/gui/widgets/scroll.hpp

@@ -1,7 +1,7 @@
 /**
  *	A Scroll Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2015 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -147,7 +147,7 @@ namespace nana
 
 				void step(size_type s)
 				{
-					metrics_.step = s;
+					metrics_.step = (s ? s : 1);
 				}
 
 				bool make_step(bool forward, unsigned multiple)
@@ -398,7 +398,7 @@ namespace nana
 		/// \brief The construct that creates a widget.
 		/// @param wd  A handle to the parent window of the widget being created.
 		/// @param visible  specify the visibility after creation.
-		scroll(window wd, bool visible)
+		scroll(window wd, bool visible = true)
 		{
 			this->create(wd, rectangle(), visible);   // add a widget scheme? and take some colors from these wd?
 		}
@@ -501,7 +501,8 @@ namespace nana
 		/// @return true if the vlaue is changed.
 		bool make_page_scroll(bool forward)
 		{
-			return this->make_step(forward, static_cast<unsigned>(range() - 1));
+			auto const count = range() / step();
+			return this->make_step(forward, static_cast<unsigned>(count > 2 ? count - 1 : 1));
 		}
 	};//end class scroll
 }//end namespace nana

include/nana/gui/widgets/skeletons/text_editor.hpp

@@ -1,7 +1,7 @@
 /*
  *	A text editor implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -219,6 +219,8 @@ namespace nana{	namespace widgets
 			const skeletons::textbase<char_type>& textbase() const;
 
 			bool try_refresh();
+
+			std::shared_ptr<scroll_operation_interface> scroll_operation() const;
 		private:
 			nana::color _m_draw_colored_area(paint::graphics& graph, const std::pair<std::size_t,std::size_t>& row, bool whole_line);
 			std::vector<upoint> _m_render_text(const ::nana::color& text_color);

include/nana/gui/widgets/tabbar.hpp

@@ -1,7 +1,7 @@
 /**
  *	A Tabbar implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -42,9 +42,8 @@ namespace nana
 			: arg_tabbar<T>({wdg, v})
 		{}
 
-		bool remove = true;					///< determines whether to remove the item
+		mutable bool remove = true;					///< determines whether to remove the item
-		bool close_attach_window = true;	///< determines whether to close the attached window. It is ignored if remove is false
+		mutable bool close_attach_window = true;	///< determines whether to close the attached window. It is ignored if remove is false
-
 	};
 
 	namespace drawerbase
@@ -293,7 +292,7 @@ namespace nana
 			if (pos > length())
 				throw std::out_of_range("tabbar::insert invalid position");
 
-			this->get_drawer_trigger().insert(pos, to_nstring(text), std::move(value));
+			this->get_drawer_trigger().insert(pos, to_nstring(std::move(text)), std::move(value));
 			API::update_window(*this);
 		}
 

include/nana/gui/widgets/textbox.hpp

@@ -1,7 +1,7 @@
 /**
  *	A Textbox Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -279,6 +279,7 @@ namespace nana
 		native_string_type _m_caption() const throw() override;
 		void _m_caption(native_string_type&&) override;
 		void _m_typeface(const paint::font&) override;
+		std::shared_ptr<scroll_operation_interface> _m_scroll_operation() const;
 	};
 }//end namespace nana
 #include <nana/pop_ignore_diagnostic>

include/nana/gui/widgets/toolbar.hpp

@@ -1,7 +1,7 @@
 /**
  *	A Toolbar Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -33,6 +33,14 @@ namespace nana
 	{
 		namespace toolbar
 		{
+		    struct item_proxy
+		    {
+				nana::toolbar& widget;
+				std::size_t button;
+
+				void enable(bool enable_state);
+		    };
+
 			struct toolbar_events
 				: public general_events
 			{
@@ -88,8 +96,10 @@ namespace nana
 		toolbar(window, const rectangle& = rectangle(), bool visible = true, bool detached = false);
 
 		void separate();                      ///< Adds a separator.
-		void append(const ::std::string& text, const nana::paint::image& img);   ///< Adds a control button.
+		drawerbase::toolbar::item_proxy append(const ::std::string& text, const nana::paint::image& img);   ///< Adds a control button.
-		void append(const ::std::string& text);   ///< Adds a control button.
+		drawerbase::toolbar::item_proxy append(const ::std::string& text);   ///< Adds a control button.
+		void clear();   ///< Removes all control buttons and separators.
+		
 		bool enable(size_type index) const;
 		void enable(size_type index, bool enable_state);
 		void scale(unsigned s);   ///< Sets the scale of control button.

include/nana/gui/widgets/treebox.hpp

@@ -1,7 +1,7 @@
 /**
  *	A Tree Box Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE or copy at 
@@ -445,6 +445,9 @@ namespace nana
 
 		item_proxy selected() const; ///< returns the selected node
 
+	private:
+		std::shared_ptr<scroll_operation_interface> _m_scroll_operation() const;
+
 	};//end class treebox
 }//end namespace nana
 

include/nana/gui/widgets/widget.hpp

@@ -1,7 +1,7 @@
 /**
  *	The fundamental widget class implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -83,6 +83,8 @@ namespace nana
 		void focus();
 		bool focused() const;
 
+		std::shared_ptr<scroll_operation_interface> scroll_operation();
+
 		void show();						///< Sets the window visible.
 		void hide();						///< Sets the window invisible.
 		bool visible() const;
@@ -137,6 +139,7 @@ namespace nana
 		virtual void _m_close();
 		virtual bool _m_enabled() const;
 		virtual void _m_enabled(bool);
+		virtual std::shared_ptr<scroll_operation_interface> _m_scroll_operation();
 		virtual bool _m_show(bool);
 		virtual bool _m_visible() const;
 		virtual void _m_size(const nana::size&);

include/nana/paint/graphics.hpp

@@ -38,14 +38,21 @@ namespace nana
 			font(const font&);
 
 			font(const ::std::string& name, double size_pt, const font_style& fs = {});
-			font(double size_pt, const path_type& truetype, const font_style& ft = {});
+			font(double size_pt, const path_type& truetype, const font_style& fs = {});
 
 			~font();
 			bool empty() const;
 
 			void set_default() const;
 			::std::string name() const;
-			double size() const;
+
+			/// Returns font size, in point.
+			/**
+			* @param fixed Indicates whether to return a fixed font size. If this parameter is false, the method may return zero for default system font size. If the parameter is true, the method returns a fixed size of default font size if the font size that assigned by constructor is zero.
+			* @return The font size, in point.
+			*/
+			double size(bool fixed = false) const;
+
 			bool bold() const;
 			unsigned weight() const;
 			bool italic() const;

include/nana/stdc++.hpp

@@ -1,7 +1,7 @@
 /**
  *	Standard Library for C++11/14/17
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2017-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at

source/detail/platform_abstraction.cpp

@@ -255,6 +255,35 @@ namespace nana
 		data::storage = nullptr;
 	}
 
+	double platform_abstraction::font_default_pt()
+	{
+#ifdef NANA_WINDOWS
+		//Create default font object.
+		NONCLIENTMETRICS metrics = {};
+		metrics.cbSize = sizeof metrics;
+#if(WINVER >= 0x0600)
+#if defined(NANA_MINGW)
+		OSVERSIONINFO osvi = {};
+		osvi.dwOSVersionInfoSize = sizeof(osvi);
+		::GetVersionEx(&osvi);
+		if (osvi.dwMajorVersion < 6)
+			metrics.cbSize -= sizeof(metrics.iPaddedBorderWidth);
+#else
+		if (!IsWindowsVistaOrGreater())
+			metrics.cbSize -= sizeof(metrics.iPaddedBorderWidth);
+#endif
+#endif
+		::SystemParametersInfo(SPI_GETNONCLIENTMETRICS, sizeof metrics, &metrics, 0);
+
+		auto desktop = ::GetDC(nullptr);
+		auto pt = std::abs(metrics.lfMessageFont.lfHeight) * 72.0 / ::GetDeviceCaps(desktop, LOGPIXELSY);
+		::ReleaseDC(nullptr, desktop);
+		return pt;
+#else
+		return 10;
+#endif
+	}
+
 	::std::shared_ptr<platform_abstraction::font> platform_abstraction::default_font(const ::std::shared_ptr<font>& new_font)
 	{
 		auto & r = platform_storage();
@@ -337,7 +366,7 @@ namespace nana
 		if(font_family.empty())
 			font_family = '*';
 
-		std::string pat_str = font_family + '-' + std::to_string(size_pt ? size_pt : 10);
+		std::string pat_str = font_family + '-' + std::to_string(size_pt ? size_pt : platform_abstraction::font_default_pt());
 		auto pat = ::XftNameParse(pat_str.c_str());
 		XftResult res;
 		auto match_pat = ::XftFontMatch(disp, ::XDefaultScreen(disp), pat, &res);
@@ -407,6 +436,31 @@ namespace nana
 					::FcConfigAppFontClear(nullptr);
 			}
 		}
+#endif
+	}
+
+	unsigned platform_abstraction::screen_dpi(bool x_requested)
+	{
+#ifdef NANA_WINDOWS
+		auto hdc = ::GetDC(nullptr);
+		auto dots = static_cast<unsigned>(::GetDeviceCaps(hdc, (x_requested ? LOGPIXELSX : LOGPIXELSY)));
+		::ReleaseDC(nullptr, hdc);
+		return dots;
+#else
+		auto & spec = ::nana::detail::platform_spec::instance();
+		auto disp = spec.open_display();
+		auto screen = ::XDefaultScreen(disp);
+
+		double dots;
+
+		if (x_requested)
+			dots += ((((double)DisplayWidth(disp, screen)) * 25.4) /
+			((double)DisplayWidthMM(disp, screen)));
+		else
+			dots += ((((double)DisplayHeight(disp, screen)) * 25.4) /
+			((double)DisplayHeightMM(disp, screen)));
+
+		return static_cast<unsigned>(dots + 0.5);
 #endif
 	}
 }

source/detail/platform_abstraction.hpp

@@ -33,10 +33,13 @@ namespace nana
 		static void initialize();
 		/// Shutdown before destruction of platform_spec 
 		static void shutdown();
+		static double font_default_pt();
 		static ::std::shared_ptr<font> default_font(const ::std::shared_ptr<font>&);
 		static ::std::shared_ptr<font> make_font(const ::std::string& font_family, double size_pt, const font::font_style& fs);
 		static ::std::shared_ptr<font> make_font_from_ttf(const path_type& ttf, double size_pt, const font::font_style& fs);
 		static void font_resource(bool try_add, const path_type& ttf);
+
+		static unsigned screen_dpi(bool x_requested);
 	};
 }
 

source/gui/detail/bedrock_posix.cpp

@@ -1,7 +1,7 @@
 /*
  *	A Bedrock Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -15,10 +15,10 @@
 #include <nana/gui/detail/bedrock_pi_data.hpp>
 #include <nana/gui/detail/event_code.hpp>
 #include <nana/system/platform.hpp>
-#include <nana/gui/detail/inner_fwd_implement.hpp>
 #include <nana/gui/detail/native_window_interface.hpp>
 #include <nana/gui/layout_utility.hpp>
 #include <nana/gui/detail/element_store.hpp>
+#include "inner_fwd_implement.hpp"
 #include <errno.h>
 #include <algorithm>
 
@@ -104,6 +104,42 @@ namespace detail
 	void window_proc_for_packet(Display *, nana::detail::msg_packet_tag&);
 	void window_proc_for_xevent(Display*, XEvent&);
 
+	class accel_key_comparer
+	{
+	public:
+		bool operator()(const accel_key& a, const accel_key& b) const
+		{
+			auto va = a.case_sensitive ? a.key : std::tolower(a.key);
+			auto vb = b.case_sensitive ? b.key : std::tolower(b.key);
+
+			if(va < vb)
+				return true;
+			else if(va > vb)
+				return false;
+
+			if (a.case_sensitive != b.case_sensitive)
+				return b.case_sensitive;
+
+			if (a.alt != b.alt)
+				return b.alt;
+
+			if (a.ctrl != b.ctrl)
+				return b.ctrl;
+
+			return ((a.shift != b.shift) && b.shift);
+		}
+	};
+
+	struct accel_key_value
+	{
+		std::function<void()> command;
+	};
+
+	struct window_platform_assoc
+	{
+		std::map<accel_key, accel_key_value, accel_key_comparer> accel_commands;
+	};
+
 	//class bedrock defines a static object itself to implement a static singleton
 	//here is the definition of this object
 	bedrock bedrock::bedrock_object;
@@ -218,10 +254,28 @@ namespace detail
 	{
 		XKeyEvent xkey;
 		nana::detail::platform_spec::instance().read_keystate(xkey);
+		arg.alt = (xkey.state & Mod1Mask);
 		arg.ctrl = (xkey.state & ControlMask);
 		arg.shift = (xkey.state & ShiftMask);
 	}
 
+	void bedrock::delete_platform_assoc(window_platform_assoc* passoc)
+	{
+		delete passoc;
+	}
+
+	void bedrock::keyboard_accelerator(native_window_type wd, const accel_key& ackey, const std::function<void()>& fn)
+	{
+		auto misc = wd_manager().root_runtime(wd);
+		if (nullptr == misc)
+			return;
+
+		if (!misc->wpassoc)
+			misc->wpassoc = new window_platform_assoc;
+
+		misc->wpassoc->accel_commands[ackey].command = fn;
+	}
+
 	element_store& bedrock::get_element_store() const
 	{
 		return impl_->estore;
@@ -490,6 +544,34 @@ namespace detail
 		return wchar_t(keysym);
 	}
 
+	bool translate_keyboard_accelerator(root_misc* misc, char os_code, const arg_keyboard& modifiers)
+	{
+		if(!misc->wpassoc)
+			return false;
+
+		auto lower_oc = std::tolower(os_code);
+
+		std::function<void()> command;
+
+		for(auto & accel : misc->wpassoc->accel_commands)
+		{
+			if(accel.first.key != (accel.first.case_sensitive ? os_code : lower_oc))
+				continue;
+
+			if(accel.first.alt == modifiers.alt && accel.first.ctrl == modifiers.ctrl && accel.first.shift == modifiers.shift)
+			{
+				command = accel.second.command;
+				break;
+			}
+		}
+
+		if(!command)
+			return false;
+		
+		command();
+		return true;
+	}
+
 	void window_proc_for_xevent(Display* /*display*/, XEvent& xevent)
 	{
 		typedef detail::bedrock::core_window_t core_window_t;
@@ -849,6 +931,9 @@ namespace detail
 
 					if(msgwnd)
 					{
+						arg_keyboard modifiers_status;
+						brock.get_key_state(modifiers_status);
+
 						KeySym keysym;
 						Status status;
 						char fixbuf[33];
@@ -883,16 +968,20 @@ namespace detail
 
 						keybuf[len] = 0;
 						wchar_t os_code = 0;
+						bool accel_translated = false;
+
 						switch(status)
 						{
 						case XLookupKeySym:
 						case XLookupBoth:
 							os_code = os_code_from_keysym(keysym);
+							accel_translated = translate_keyboard_accelerator(root_runtime, os_code, modifiers_status);
+							if(accel_translated)
+								break;
+
 							if(os_code == keyboard::tab && (false == (msgwnd->flags.tab & detail::tab_type::eating))) //Tab
 							{
-								arg_keyboard argkey;
+								auto tstop_wd = wd_manager.tabstop(msgwnd, !modifiers_status.shift);
-								brock.get_key_state(argkey);
-								auto tstop_wd = wd_manager.tabstop(msgwnd, !argkey.shift);
 								if (tstop_wd)
 								{
                                     root_runtime->condition.ignore_tab = true;
@@ -907,9 +996,9 @@ namespace detail
 								if((nullptr == pressed_wd) && (nullptr == pressed_wd_space))
 								{
 									arg_mouse arg;
-									arg.alt = false;
+									arg.alt = modifiers_status.alt;
 									arg.button = ::nana::mouse::left_button;
-									arg.ctrl = false;
+									arg.ctrl = modifiers_status.ctrl;
 									arg.evt_code = event_code::mouse_down;
 									arg.left_button = true;
 									arg.mid_button = false;
@@ -955,11 +1044,10 @@ namespace detail
 								if(keyboard::os_ctrl == os_code)
 									context.is_ctrl_pressed = true;
 
-								arg_keyboard arg;
+								arg_keyboard arg = modifiers_status;
 								arg.ignore = false;
 								arg.key = os_code;
 								arg.evt_code = event_code::key_press;
-								brock.get_key_state(arg);
 								arg.window_handle = reinterpret_cast<window>(msgwnd);
 
 								brock.emit(event_code::key_press, msgwnd, arg, true, &context);
@@ -988,7 +1076,7 @@ namespace detail
 
 								for(int i = 0; i < len; ++i)
 								{
-									arg_keyboard arg;
+									arg_keyboard arg = modifiers_status;
 									arg.ignore = false;
 									arg.key = charbuf[i];
 
@@ -1011,7 +1099,6 @@ namespace detail
 									}
 									arg.evt_code = event_code::key_char;
 									arg.window_handle = reinterpret_cast<window>(msgwnd);
-									brock.get_key_state(arg);
 									msgwnd->annex.events_ptr->key_char.emit(arg, reinterpret_cast<window>(msgwnd));
 									if(arg.ignore == false && wd_manager.available(msgwnd))
 										draw_invoker(&drawer::key_char, msgwnd, arg, &context);

source/gui/detail/bedrock_windows.cpp

@@ -1,7 +1,7 @@
 /**
  *	A Bedrock Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -20,11 +20,11 @@
 #include <nana/system/platform.hpp>
 #include <nana/system/timepiece.hpp>
 #include <nana/gui.hpp>
-#include <nana/gui/detail/inner_fwd_implement.hpp>
 #include <nana/gui/detail/native_window_interface.hpp>
 #include <nana/gui/layout_utility.hpp>
 #include <nana/gui/detail/element_store.hpp>
 #include <nana/gui/detail/color_schemes.hpp>
+#include "inner_fwd_implement.hpp"
 
 #include <iostream>	//use std::cerr
 
@@ -182,6 +182,12 @@ namespace detail
 		}cache;
 	};
 
+	struct window_platform_assoc
+	{
+		HACCEL accel{ nullptr };	///< A handle to a Windows keyboard accelerator object.
+		std::map<int, std::function<void()>> accel_commands;
+	};
+
 	//class bedrock defines a static object itself to implement a static singleton
 	//here is the definition of this object
 	bedrock bedrock::bedrock_object;
@@ -345,6 +351,25 @@ namespace detail
 		}
 	}
 
+	void process_msg(bedrock* brock, MSG& msg)
+	{
+		if (WM_KEYFIRST <= msg.message && msg.message <= WM_KEYLAST)
+		{
+			auto misc = brock->wd_manager().root_runtime(reinterpret_cast<native_window_type>(msg.hwnd));
+			if (misc && misc->wpassoc && misc->wpassoc->accel)
+			{
+				if (::TranslateAccelerator(msg.hwnd, misc->wpassoc->accel, &msg))
+					return;
+			}
+		}
+
+		auto menu_wd = brock->get_menu(reinterpret_cast<native_window_type>(msg.hwnd), true);
+		if (menu_wd) interior_helper_for_menu(msg, menu_wd);
+
+		::TranslateMessage(&msg);
+		::DispatchMessage(&msg);
+	}
+
 	void bedrock::pump_event(window condition_wd, bool is_modal)
 	{
 		const unsigned tid = ::GetCurrentThreadId();
@@ -383,11 +408,15 @@ namespace detail
 							if (msg.message == WM_QUIT)   break;
 							if ((WM_KEYFIRST <= msg.message && msg.message <= WM_KEYLAST) || !::IsDialogMessage(native_handle, &msg))
 							{
+#if 0
 								auto menu_wd = get_menu(reinterpret_cast<native_window_type>(msg.hwnd), true);
 								if (menu_wd) interior_helper_for_menu(msg, menu_wd);
 
-								::TranslateMessage(&msg);
+								::TranslateMessage(&msg);	//deprecated
 								::DispatchMessage(&msg);
+#else
+								process_msg(this, msg);
+#endif
 
 								wd_manager().remove_trash_handle(tid);
 							}
@@ -400,11 +429,15 @@ namespace detail
 					{
 						if (-1 != ::GetMessage(&msg, 0, 0, 0))
 						{
+#if 0
 							auto menu_wd = get_menu(reinterpret_cast<native_window_type>(msg.hwnd), true);
 							if (menu_wd) interior_helper_for_menu(msg, menu_wd);
 
 							::TranslateMessage(&msg);
 							::DispatchMessage(&msg);
+#else
+							process_msg(this, msg);
+#endif
 						}
 
 						wd_manager().call_safe_place(tid);
@@ -420,11 +453,15 @@ namespace detail
 				{
 					if(-1 != ::GetMessage(&msg, 0, 0, 0))
 					{
+#if 0
 						auto menu_wd = get_menu(reinterpret_cast<native_window_type>(msg.hwnd), true);
 						if(menu_wd) interior_helper_for_menu(msg, menu_wd);
 
 						::TranslateMessage(&msg);
 						::DispatchMessage(&msg);
+#else
+						process_msg(this, msg);
+#endif
 					}
 
 					wd_manager().call_safe_place(tid);
@@ -635,6 +672,7 @@ namespace detail
 
 		switch(msg)
 		{
+		case WM_COMMAND:
 		case WM_DESTROY:
 		case WM_SHOWWINDOW:
 		case WM_SIZING:
@@ -786,6 +824,17 @@ namespace detail
 
 			switch (message)
 			{
+			case WM_COMMAND:
+				if ((1 == HIWORD(wParam)) && root_runtime->wpassoc)
+				{
+					auto i = root_runtime->wpassoc->accel_commands.find(LOWORD(wParam));
+					if (i != root_runtime->wpassoc->accel_commands.end())
+					{
+						auto fn = i->second;
+						fn();
+					}
+				}
+				break;
 			case WM_IME_STARTCOMPOSITION:
 				if (msgwnd->other.attribute.root->ime_enabled)
 				{
@@ -1578,10 +1627,58 @@ namespace detail
 
 	void bedrock::get_key_state(arg_keyboard& kb)
 	{
+		kb.alt = (0 != (::GetKeyState(VK_MENU) & 0x80));
 		kb.ctrl = (0 != (::GetKeyState(VK_CONTROL) & 0x80));
 		kb.shift = (0 != (::GetKeyState(VK_SHIFT) & 0x80));
 	}
 
+	void bedrock::delete_platform_assoc(window_platform_assoc* passoc)
+	{
+		delete passoc;
+	}
+
+	//Generates an identitifer for an accel key.
+	std::pair<int, WORD> id_accel_key(const accel_key& key)
+	{
+		std::pair<int, WORD> ret;
+
+		//Use virt-key for non-case sensitive
+		if (!key.case_sensitive)
+			ret.second = static_cast<WORD>(std::tolower(key.key) - 'a' + 0x41);
+
+		ret.first = ret.second | int(key.case_sensitive ? (1 << 8) : 0) | int(key.alt ? (1 << 9) : 0) | int(key.ctrl ? (1 << 10) : 0) | int(key.shift ? (1 << 11) : 0);
+		return ret;
+	}
+
+	void bedrock::keyboard_accelerator(native_window_type wd, const accel_key& key, const std::function<void()>& fn)
+	{
+		auto misc = wd_manager().root_runtime(wd);
+		if (nullptr == misc)
+			return;
+		
+		if (!misc->wpassoc)
+			misc->wpassoc = new window_platform_assoc;
+
+		auto idkey = id_accel_key(key);
+
+		misc->wpassoc->accel_commands[idkey.first] = fn;
+
+		auto accel_size = ::CopyAcceleratorTable(misc->wpassoc->accel, nullptr, 0);
+
+		std::unique_ptr<ACCEL[]> accels(new ACCEL[accel_size + 1]);
+		
+		if (accel_size)
+			::CopyAcceleratorTable(misc->wpassoc->accel, accels.get(), accel_size);
+
+		auto p = accels.get() + accel_size;
+		p->cmd = idkey.first;
+		p->fVirt = (key.case_sensitive ? 0 : FVIRTKEY) | (key.alt ? FALT : 0) | (key.ctrl ? FCONTROL : 0) | (key.shift ? FSHIFT : 0);
+		p->key = idkey.second;
+
+		::DestroyAcceleratorTable(misc->wpassoc->accel);
+		misc->wpassoc->accel = ::CreateAcceleratorTable(accels.get(), accel_size + 1);
+	}
+
 	element_store& bedrock::get_element_store() const
 	{
 		return impl_->estore;

source/gui/detail/inner_fwd_implement.hpp

@@ -1,7 +1,7 @@
 /*
  *	Implementations of Inner Forward Declaration
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -15,9 +15,9 @@
 #define NANA_GUI_INNER_FWD_IMPLEMENT_HPP
 
 #include <nana/push_ignore_diagnostic>
-#include "inner_fwd.hpp"
+#include <nana/gui/detail/inner_fwd.hpp>
-#include "basic_window.hpp"
+#include <nana/gui/detail/basic_window.hpp>
-#include "../../paint/graphics.hpp"
+#include <nana/paint/graphics.hpp>
 
 #include <map>
 
@@ -54,10 +54,13 @@ namespace nana{
 			implementation * impl_;
 		};
 
+		struct window_platform_assoc;
 
 		struct root_misc
 		{
 			basic_window * window;
+			window_platform_assoc * wpassoc{ nullptr };
+
 			nana::paint::graphics	root_graph;
 			shortkey_container		shortkeys;
 
@@ -71,6 +74,10 @@ namespace nana{
 
 			root_misc(root_misc&&);
 			root_misc(basic_window * wd, unsigned width, unsigned height);
+			~root_misc();
+		private:
+			root_misc(const root_misc&) = delete;
+			root_misc& operator=(const root_misc&) = delete;
 		};//end struct root_misc
 
 

source/gui/detail/native_window_interface.cpp

@@ -549,7 +549,7 @@ namespace nana{
 			{
 				nana::detail::platform_spec::instance().keep_window_icon(wd, sml_icon, big_icon);
 				if (sml_handle)
-					::SendMessage(reinterpret_cast<HWND>(wd), WM_SETICON, ICON_SMALL, reinterpret_cast<WPARAM>(sml_handle));
+					::SendMessage(reinterpret_cast<HWND>(wd), WM_SETICON, ICON_SMALL, reinterpret_cast<LPARAM>(sml_handle));
 
 				if (big_handle)
 					::SendMessage(reinterpret_cast<HWND>(wd), WM_SETICON, ICON_BIG, reinterpret_cast<LPARAM>(big_handle));

source/gui/detail/window_layout.cpp

@@ -1,7 +1,7 @@
 /*
 *	Window Layout Implementation
 *	Nana C++ Library(http://www.nanapro.org)
-*	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+*	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
 *
 *	Distributed under the Boost Software License, Version 1.0.
 *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -106,43 +106,46 @@ namespace nana
 
 				visual = rectangle{ wd->pos_root, wd->dimension };
 
-				if (wd->root_widget != wd)
+				if (category::flags::root != wd->other.category)
 				{
 					//Test if the root widget is overlapped the specified widget
 					//the pos of root widget is (0, 0)
 					if (overlapped(visual, rectangle{ wd->root_widget->pos_owner, wd->root_widget->dimension }) == false)
 						return false;
-				}
 
-				for (auto parent = wd->parent; parent; parent = parent->parent)
+					for (auto parent = wd->parent; parent; parent = parent->parent)
-				{
-					if (category::flags::root == parent->other.category)
 					{
-						//visual rectangle of wd's parent
+						if (category::flags::root == parent->other.category)
-						rectangle vrt_parent{parent->pos_root, parent->dimension};
-
-						point pos_root;
-						while (parent->parent)
 						{
-							pos_root -= native_interface::window_position(parent->root);
+							wd = parent;
-
+							break;
-							if (!overlap(rectangle{ pos_root, parent->parent->root_widget->dimension }, vrt_parent, vrt_parent))
-								return false;
-
-							parent = parent->parent->root_widget;
 						}
 
-						if (!overlap(vrt_parent, visual, visual))
+						if (!overlap(rectangle{ parent->pos_root, parent->dimension }, visual, visual))
 							return false;
-						
-						return true;
 					}
-
-					if (!overlap(rectangle{ parent->pos_root, parent->dimension }, visual, visual))
-						return false;
 				}
 
-				return true;
+				//Now, wd actually is the root widget of original parameter wd
+				if (nullptr == wd->parent)
+					return true;
+				
+				auto parent_rw = wd->parent->root_widget;
+				//visual rectangle of wd's parent
+				rectangle vrt_parent{ parent_rw->pos_root, parent_rw->dimension };
+
+				point pos_root;
+				while (parent_rw->parent)
+				{
+					pos_root -= native_interface::window_position(parent_rw->root);
+
+					if (!overlap(rectangle{ pos_root, parent_rw->parent->root_widget->dimension }, vrt_parent, vrt_parent))
+						return false;
+
+					parent_rw = parent_rw->parent->root_widget;
+				}
+
+				return overlap(vrt_parent, visual, visual);
 			}
 
 			//read_overlaps
@@ -386,6 +389,13 @@ namespace nana
 				nana::rectangle r_of_sigwd(sigwd->pos_root, sigwd->dimension);
 				for (auto wd : data_sect.effects_bground_windows)
 				{
+					//Don't notify the window if both native root windows are not same(e.g. wd and sigwd have
+					//a some parent). Otherwise, _m_paint_glass_window() recursively paints sigwd to make stack overflow.
+					//On the other hand, a nested root window is always floating on its parent's child widgets, it's unnecessary to
+					//notify the wd if they haven't a same native root window.
+					if (sigwd->root != wd->root)
+						continue;
+
 					if (wd == sigwd || !wd->displayed() ||
 						(false == overlapped(nana::rectangle{ wd->pos_root, wd->dimension }, r_of_sigwd)))
 						continue;

source/gui/detail/window_manager.cpp

@@ -1,7 +1,7 @@
 /*
  *	Window Manager Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -16,11 +16,11 @@
 #include <nana/gui/detail/events_operation.hpp>
 #include <nana/gui/detail/window_manager.hpp>
 #include <nana/gui/detail/window_layout.hpp>
-#include "window_register.hpp"
 #include <nana/gui/detail/native_window_interface.hpp>
-#include <nana/gui/detail/inner_fwd_implement.hpp>
 #include <nana/gui/layout_utility.hpp>
 #include <nana/gui/detail/effects_renderer.hpp>
+#include "window_register.hpp"
+#include "inner_fwd_implement.hpp"
 
 #include <stdexcept>
 #include <algorithm>
@@ -140,10 +140,12 @@ namespace nana
 		//struct root_misc
 		root_misc::root_misc(root_misc&& other):
 			window(other.window),
+			wpassoc(other.wpassoc),
 			root_graph(std::move(other.root_graph)),
 			shortkeys(std::move(other.shortkeys)),
 			condition(std::move(other.condition))
 		{
+			other.wpassoc = nullptr;	//moved-from
 		}
 
 		root_misc::root_misc(basic_window * wd, unsigned width, unsigned height)
@@ -155,6 +157,11 @@ namespace nana
 			condition.pressed_by_space = nullptr;
 			condition.hovered = nullptr;
 		}
+
+		root_misc::~root_misc()
+		{
+			bedrock::delete_platform_assoc(wpassoc);
+		}
 		//end struct root_misc
 
 		//class root_register

source/gui/filebox.cpp

@@ -1041,7 +1041,8 @@ namespace nana
 		bool filebox::show() const
 		{
 #if defined(NANA_WINDOWS)
-			std::wstring wfile;
+			auto winitfile = to_wstring(impl_->file);
+			std::wstring wfile(winitfile);
 			wfile.resize(520);
 
 			OPENFILENAME ofn;

source/gui/place.cpp

@@ -1,7 +1,7 @@
 /*
  *	An Implementation of Place for Layout
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -58,7 +58,7 @@ namespace nana
 			{
 				div_start, div_end, splitter,
 				identifier, dock, fit, hfit, vfit, vert, grid, number, array, reparray,
-				weight, width, height, gap, margin, arrange, variable, repeated, min_px, max_px, left, right, top, bottom, undisplayed, invisible,
+				weight, width, height, gap, margin, arrange, variable, repeated, min_px, max_px, left, right, top, bottom, undisplayed, invisible, switchable,
 				collapse, parameters,
 				equal,
 				eof, error
@@ -252,14 +252,6 @@ namespace nana
 						case 'd': return token::width;
 						}
 					}
-					else if ("dock" == idstr_)
-						return token::dock;
-					else if ("fit" == idstr_)
-						return token::fit;
-					else if ("vertical" == idstr_ || "vert" == idstr_)
-						return token::vert;
-					else if ("variable" == idstr_ || "repeated" == idstr_)
-						return ('v' == idstr_[0] ? token::variable : token::repeated);
 					else if ("arrange" == idstr_ || "hfit" == idstr_ || "vfit" == idstr_ || "gap" == idstr_)
 					{
 						auto ch = idstr_[0];
@@ -287,16 +279,54 @@ namespace nana
 							_m_throw_error("a parameter list is required after 'collapse'");
 						return token::collapse;
 					}
-					else if ("left" == idstr_ || "right" == idstr_ || "top" == idstr_ || "bottom" == idstr_ || "undisplayed" == idstr_ || "invisible" == idstr_)
+					else if (!idstr_.empty())
 					{
 						switch (idstr_.front())
 						{
-						case 'l': return token::left;
+						case 'b':
-						case 'r': return token::right;
+							if ("bottom" == idstr_)
-						case 't': return token::top;
+								return token::bottom;
-						case 'b': return token::bottom;
+							break;
-						case 'u': return token::undisplayed;
+						case 'd':
-						case 'i': return token::invisible;
+							if ("dock" == idstr_)
+								return token::dock;
+							break;
+						case 'f':
+							if ("fit" == idstr_)
+								return token::fit;
+							break;
+						case 'i':
+							if ("invisible" == idstr_)
+								return token::invisible;
+							break;
+						case 'l':
+							if ("left" == idstr_)
+								return token::left;
+							break;
+						case 'r':
+							if ("repeated" == idstr_)
+								return token::repeated;
+							else if ("right" == idstr_)
+								return token::right;
+							break;
+						case 's':
+							if ("switchable" == idstr_)
+								return token::switchable;
+							break;
+						case 't':
+							if ("top" == idstr_)
+								return token::top;
+							break;
+						case 'u':
+							if ("undisplayed" == idstr_)
+								return token::undisplayed;
+							break;
+						case 'v':
+							if ("vertical" == idstr_ || "vert" == idstr_)
+								return token::vert;
+							else if ("variable" == idstr_)
+								return token::variable;
+							break;
 						}
 					}
 
@@ -579,6 +609,7 @@ namespace nana
 		class div_splitter;
 		class div_dock;
 		class div_dockpane;
+		class div_switchable;
 
 		window window_handle{nullptr};
 		event_handle event_size_handle{nullptr};
@@ -747,7 +778,7 @@ namespace nana
 	class place::implement::division
 	{
 	public:
-		enum class kind{ arrange, vertical_arrange, grid, splitter, dock, dockpane};
+		enum class kind{ arrange, vertical_arrange, grid, splitter, dock, dockpane, switchable};
 		using token = place_parts::tokenizer::token;
 
 		division(kind k, std::string&& n) noexcept
@@ -981,6 +1012,19 @@ namespace nana
 						div_next->set_display(true);
 				}
 			}
+
+			if (display)
+			{
+				//If the field is a child of switchable field, hides other child fields.
+				if (this->div_owner && (kind::switchable == this->div_owner->kind_of_division))
+				{
+					for (auto & child : this->div_owner->children)
+					{
+						if (child.get() != this)
+							child->set_display(false);
+					}
+				}
+			}
 		}
 
 		bool is_back(const division* div) const noexcept
@@ -2539,6 +2583,43 @@ namespace nana
 		implement * const impl_;
 	};
 
+	class place::implement::div_switchable
+		: public division
+	{
+	public:
+		div_switchable(std::string && name, implement* impl) noexcept
+			: division(kind::switchable, std::move(name)), impl_(impl)
+		{}
+	private:
+		void collocate(window wd) override
+		{
+			division * div = nullptr;
+			for (auto & child : children)
+			{
+				if (child->display)
+				{
+					div = child.get();
+					div->field_area = this->margin_area();
+					div->collocate(wd);
+					break;
+				}
+			}
+
+			//Hide other child fields.
+			rectangle empty_r{ this->margin_area().position() , size{ 0, 0 } };
+			for (auto & child : children)
+			{
+				if (child.get() != div)
+				{
+					child->field_area = empty_r;
+					child->collocate(wd);
+				}
+			}
+		}
+	private:
+		implement * const impl_;
+	};
+
 	place::implement::~implement()
 	{
 		API::umake_event(event_size_handle);
@@ -2680,6 +2761,9 @@ namespace nana
 				children.emplace_back(std::move(div));
 			}
 				break;
+			case token::switchable:
+				div_type = token::switchable;
+				break;
 			case token::vert:
 				div_type = tk;
 				break;
@@ -2850,6 +2934,9 @@ namespace nana
 		case token::dock:
 			div.reset(new div_dock(std::move(name), this));
 			break;
+		case token::switchable:
+			div.reset(new div_switchable(std::move(name), this));
+			break;
 		default:
 			throw std::invalid_argument("nana.place: invalid division type.");
 		}
@@ -3184,6 +3271,22 @@ namespace nana
 
 			modified_ptr->div_owner = div_owner;
 			modified_ptr->div_next = div_next;
+
+			if (div_owner)
+			{
+				implement::division * pv_div = nullptr;
+				//Updates the div_next of the div at front of modified one.
+				for (auto & div : div_owner->children)
+				{
+					if (div.get() == modified_ptr)
+					{
+						if (pv_div)
+							pv_div->div_next = modified_ptr;
+						break;
+					}
+					pv_div = div.get();
+				}
+			}
 		}
 		catch (...)
 		{

source/gui/programming_interface.cpp

@@ -1,7 +1,7 @@
 /*
  *	Nana GUI Programming Interface Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -20,6 +20,8 @@
 #include <nana/gui/widgets/widget.hpp>
 #include <nana/gui/detail/events_operation.hpp>
 
+#include "../../source/detail/platform_abstraction.hpp"
+
 namespace nana
 {
 	//restrict
@@ -821,6 +823,15 @@ namespace API
 		}
 	}
 
+	nana::optional<rectangle> window_rectangle(window wd)
+	{
+		auto iwd = reinterpret_cast<basic_window*>(wd);
+		internal_scope_guard lock;
+		if (restrict::wd_manager().available(iwd))
+			return rectangle(iwd->pos_owner, iwd->dimension);
+		return{};
+	}
+
 	bool get_window_rectangle(window wd, rectangle& r)
 	{
 		auto iwd = reinterpret_cast<basic_window*>(wd);
@@ -1473,5 +1484,10 @@ namespace API
 		
 		return{};
 	}
+
+	unsigned screen_dpi(bool x_requested)
+	{
+		return ::nana::platform_abstraction::screen_dpi(x_requested);
+	}
 }//end namespace API
 }//end namespace nana

source/gui/widgets/button.cpp

@@ -379,7 +379,7 @@ namespace nana{	namespace drawerbase
 }//end namespace drawerbase
 
 		//button
-		//@brief: Defaine a button widget and it provides the interfaces to be operational
+		//@brief: Define a button widget and it provides the interfaces to be operational
 			button::button(){}
 
 			button::button(window wd, bool visible)

source/gui/widgets/checkbox.cpp

@@ -1,7 +1,7 @@
 /*
  *	A CheckBox Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -296,7 +296,7 @@ namespace nana{ namespace drawerbase
 					return static_cast<std::size_t>(i - ui_container_.cbegin());
 			}
 
-			return ui_container_.size();
+			return npos;
 		}
 
 		std::size_t radio_group::size() const

source/gui/widgets/form.cpp

@@ -1,6 +1,6 @@
 /*
  *	A Form Implementation
- *	Copyright(C) 2003-2013 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -10,6 +10,7 @@
  */
 
 #include <nana/gui/widgets/form.hpp>
+#include <nana/gui/detail/bedrock.hpp>
 
 namespace nana
 {
@@ -94,6 +95,11 @@ namespace nana
 		{
 			API::wait_for(handle());
 		}
+
+		void form::keyboard_accelerator(const accel_key& key, const std::function<void()>& fn)
+		{
+			nana::detail::bedrock::instance().keyboard_accelerator(this->native_handle(), key, fn);
+		}
 	//end class form
 
 	//class nested_form

source/gui/widgets/group.cpp

@@ -1,7 +1,7 @@
 /**
  *	A group widget implementation
  *	Nana C++ Library(http://www.nanaro.org)
- *	Copyright(C) 2015-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2015-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -172,13 +172,13 @@ namespace nana{
 		return *this;
 	}
 
-	group& group::collocate() throw ()
+	group& group::collocate() noexcept
 	{
 		impl_->place_content.collocate();
 		return *this;
 	}
 
-	group& group::div(const char* div_str) throw ()
+	group& group::div(const char* div_str) noexcept
 	{
 		if (div_str)
 			impl_->usr_div_str = div_str;
@@ -194,6 +194,21 @@ namespace nana{
 		return impl_->place_content.field(field);
 	}
 
+	void group::field_display(const char* field_name, bool display)
+	{
+		impl_->place_content.field_display(field_name, display);
+	}
+
+	bool group::field_display(const char* field_name) const
+	{
+		return impl_->place_content.field_display(field_name);
+	}
+
+	void group::erase(window handle)
+	{
+		impl_->place_content.erase(handle);
+	}
+
 	void group::_m_add_child(const char* field, widget* wdg)
 	{
 		impl_->place_content[field] << wdg->handle();
@@ -208,8 +223,8 @@ namespace nana{
 		outter[field_title] << impl_->caption;
 		outter.collocate();
 
+		impl_->caption.transparent(true);
 		color pbg = API::bgcolor(this->parent());
-
 		impl_->caption.bgcolor(pbg.blend(colors::black, 0.025));
 
 		this->bgcolor(pbg.blend(colors::black, 0.05));
@@ -222,10 +237,27 @@ namespace nana{
 			auto gap_px = impl_->gap - 1;
 
 			graph.rectangle(true, API::bgcolor(this->parent()));
-			graph.round_rectangle(rectangle(point(gap_px, impl_->caption_dimension.height / 2),
+
-				nana::size(graph.width() - 2 * gap_px, graph.height() - impl_->caption_dimension.height / 2 - gap_px)
+			auto const top_round_line = static_cast<int>(impl_->caption_dimension.height) / 2;
+
+			graph.round_rectangle(rectangle(point(gap_px, top_round_line),
+				nana::size(graph.width() - 2 * gap_px, graph.height() - top_round_line - gap_px)
 				),
 				3, 3, colors::gray_border, true, this->bgcolor());
+
+			auto opt_r = API::window_rectangle(impl_->caption);
+			if (opt_r)
+			{
+				rectangle grad_r{ opt_r->position(), nana::size{ opt_r->width, static_cast<unsigned>(top_round_line - opt_r->y) } };
+
+				grad_r.y += top_round_line*2  / 3;
+				grad_r.x -= 2;
+				grad_r.width += 4;
+
+				graph.gradual_rectangle(grad_r,
+					API::bgcolor(this->parent()), this->bgcolor(), true
+					);
+			}
 		});
 	}
 

source/gui/widgets/menubar.cpp

@@ -626,6 +626,13 @@ namespace nana
 			return get_drawer_trigger().ess().items.size();
 		}
 		
+		void menubar::clear()
+		{
+			internal_scope_guard lock;
+			get_drawer_trigger().ess().items.clear();
+			API::refresh_window(handle());
+		}
+
 		bool menubar::cancel()
 		{
 			return get_drawer_trigger().ess().cancel();

source/gui/widgets/progress.cpp

@@ -1,6 +1,6 @@
 /*
  *	A Progress Indicator Implementation
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -96,7 +96,11 @@ namespace nana
 				{
 					if (widget_)
 					{
-						auto value_px = (widget_->size().width - border_px * 2) * value_ / max_;
+						auto value_px = (widget_->size().width - border_px * 2);
+
+						//avoid overflow
+						if (value_ < max_)
+							value_px = static_cast<unsigned>(value_px * (double(value_) / double(max_)));
 
 						if (value_px != value_px_)
 						{

source/gui/widgets/scroll.cpp

@@ -1,7 +1,7 @@
 /*
  *	A Scroll Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2014 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0. 
  *	(See accompanying file LICENSE_1_0.txt or copy at 
@@ -20,9 +20,15 @@ namespace nana
 		namespace scroll
 		{
 		//struct metrics_type
-			metrics_type::metrics_type()
+			metrics_type::metrics_type():
-				:peak(1), range(1), step(1), value(0),
+				peak(1),
-				what(buttons::none), pressed(false), scroll_length(0), scroll_pos(0)
+				range(1),
+				step(1),
+				value(0),
+				what(buttons::none),
+				pressed(false),
+				scroll_length(0),
+				scroll_pos(0)
 			{}
 		//end struct metrics_type
 

source/gui/widgets/skeletons/content_view.cpp

@@ -1,7 +1,7 @@
 /*
 *	A Content View Implementation
 *	Nana C++ Library(http://www.nanapro.org)
-*	Copyright(C) 2017 Jinhao(cnjinhao@hotmail.com)
+*	Copyright(C) 2017-2018 Jinhao(cnjinhao@hotmail.com)
 *
 *	Distributed under the Boost Software License, Version 1.0.
 *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -19,6 +19,39 @@ namespace nana {
 	namespace widgets {
 		namespace skeletons
 		{
+			struct cv_scroll_rep
+			{
+				content_view::scrolls enabled_scrolls{ content_view::scrolls::both };
+				nana::scroll<false>	horz;
+				nana::scroll<true>	vert;
+
+				scroll_interface* scroll(arg_wheel::wheel whl)
+				{
+					if (arg_wheel::wheel::horizontal == whl)
+						return &horz;
+					else if (arg_wheel::wheel::vertical == whl)
+						return &vert;
+					return nullptr;
+				}
+			};
+
+			class scroll_operation
+				: public scroll_operation_interface
+			{
+			public:
+				scroll_operation(std::shared_ptr<cv_scroll_rep>& impl)
+					: cv_scroll_(impl)
+				{
+				}
+			private:
+				bool visible(bool vert) const override
+				{
+					return !(vert ? cv_scroll_->vert.empty() : cv_scroll_->horz.empty());
+				}
+			private:
+				std::shared_ptr<cv_scroll_rep> const cv_scroll_;
+			};
+
 			struct content_view::implementation
 			{
 				content_view&	view;
@@ -35,9 +68,13 @@ namespace nana {
 				bool	drag_started{ false };
 				point origin;
 
-				scrolls enabled_scrolls{scrolls::both};
+				/*
+				scrolls enabled_scrolls{scrolls::both};	//deprecated
 				nana::scroll<false>	horz;
 				nana::scroll<true>	vert;
+				*/
+
+				std::shared_ptr<cv_scroll_rep> cv_scroll;
 
 				timer tmr;
 
@@ -50,9 +87,11 @@ namespace nana {
 
 				implementation(content_view& v, window handle) :
 					view(v),
-					window_handle(handle)
+					window_handle(handle),
+					cv_scroll(std::make_shared<cv_scroll_rep>())
 				{
 					API::events(handle).mouse_wheel.connect_unignorable([this](const arg_wheel& arg) {
+#if 0
 						scroll_interface * scroll = nullptr;
 						switch (arg.which)
 						{
@@ -66,6 +105,11 @@ namespace nana {
 							//Other button is not unsupported.
 							return;
 						}
+#else
+						auto const scroll = cv_scroll->scroll(arg.which);
+						if (nullptr == scroll)
+							return;
+#endif
 
 						if (!API::empty_window(arg.window_handle))
 						{
@@ -159,11 +203,11 @@ namespace nana {
 
 					auto speed_horz = 0;
 					if (skew.x)
-						speed_horz = skew.x / (std::max)(1, static_cast<int>(horz.step())) + (skew.x < 0 ? -1 : 1);
+						speed_horz = skew.x / (std::max)(1, static_cast<int>(cv_scroll->horz.step())) + (skew.x < 0 ? -1 : 1);
 
 					auto speed_vert = 0;
 					if (skew.y)
-						speed_vert = skew.y / (std::max)(1, static_cast<int>(vert.step())) + (skew.y < 0 ? -1 : 1);
+						speed_vert = skew.y / (std::max)(1, static_cast<int>(cv_scroll->vert.step())) + (skew.y < 0 ? -1 : 1);
 
 					speed_horz = (std::min)(5, (std::max)(speed_horz, -5));
 					speed_vert = (std::min)(5, (std::max)(speed_vert, -5));
@@ -180,10 +224,10 @@ namespace nana {
 					//event hander for scrollbars
 					auto event_fn = [this](const arg_scroll& arg)
 					{
-						if (arg.window_handle == this->vert.handle())
+						if (arg.window_handle == cv_scroll->vert.handle())
-							origin.y = static_cast<int>(this->vert.value());
+							origin.y = static_cast<int>(cv_scroll->vert.value());
 						else
-							origin.x = static_cast<int>(this->horz.value());
+							origin.x = static_cast<int>(cv_scroll->horz.value());
 
 						if (this->events.scrolled)
 							this->events.scrolled();
@@ -194,33 +238,33 @@ namespace nana {
 
 					this->passive = passive;
 
-					bool const vert_allowed = (enabled_scrolls == scrolls::vert || enabled_scrolls == scrolls::both);
+					bool const vert_allowed = (cv_scroll->enabled_scrolls == scrolls::vert || cv_scroll->enabled_scrolls == scrolls::both);
-					bool const horz_allowed = (enabled_scrolls == scrolls::horz || enabled_scrolls == scrolls::both);
+					bool const horz_allowed = (cv_scroll->enabled_scrolls == scrolls::horz || cv_scroll->enabled_scrolls == scrolls::both);
 
 					if ((imd_area.width != disp_area.width) && vert_allowed)
 					{
-						if (vert.empty())
+						if (cv_scroll->vert.empty())
 						{
-							vert.create(window_handle);
+							cv_scroll->vert.create(window_handle);
-							vert.events().value_changed.connect_unignorable(event_fn);
+							cv_scroll->vert.events().value_changed.connect_unignorable(event_fn);
-							API::take_active(vert, false, window_handle);
+							API::take_active(cv_scroll->vert, false, window_handle);
 							this->passive = false;
 						}
 						
-						vert.move({
+						cv_scroll->vert.move({
 							disp_area.x + static_cast<int>(imd_area.width) + skew_vert.x,
 							disp_area.y + skew_vert.y,
 							space(),
 							imd_area.height + extra_px.height
 						});
 
-						vert.amount(content_size.height);
+						cv_scroll->vert.amount(content_size.height);
-						vert.range(imd_area.height);
+						cv_scroll->vert.range(imd_area.height);
-						vert.value(origin.y);
+						cv_scroll->vert.value(origin.y);
 					}
 					else
 					{
-						vert.close();
+						cv_scroll->vert.close();
 
 						//If vert is allowed, it indicates the vertical origin is not moved
 						//Make sure the v origin is zero
@@ -230,28 +274,28 @@ namespace nana {
 
 					if ((imd_area.height != disp_area.height) && horz_allowed)
 					{
-						if (horz.empty())
+						if (cv_scroll->horz.empty())
 						{
-							horz.create(window_handle);
+							cv_scroll->horz.create(window_handle);
-							horz.events().value_changed.connect_unignorable(event_fn);
+							cv_scroll->horz.events().value_changed.connect_unignorable(event_fn);
-							API::take_active(horz, false, window_handle);
+							API::take_active(cv_scroll->horz, false, window_handle);
 							this->passive = false;
 						}
 
-						horz.move({
+						cv_scroll->horz.move({
 							disp_area.x + skew_horz.x,
 							disp_area.y + static_cast<int>(imd_area.height) + skew_horz.y,
 							imd_area.width + extra_px.width,
 							space()
 						});
 
-						horz.amount(content_size.width);
+						cv_scroll->horz.amount(content_size.width);
-						horz.range(imd_area.width);
+						cv_scroll->horz.range(imd_area.width);
-						horz.value(origin.x);
+						cv_scroll->horz.value(origin.x);
 					}
 					else
 					{
-						horz.close();
+						cv_scroll->horz.close();
 						//If horz is allowed, it indicates the horzontal origin is not moved
 						//Make sure the x origin is zero
 						if (horz_allowed)
@@ -279,20 +323,25 @@ namespace nana {
 
 			bool content_view::enable_scrolls(scrolls which)
 			{
-				if (impl_->enabled_scrolls == which)
+				if (impl_->cv_scroll->enabled_scrolls == which)
 					return false;
 
-				impl_->enabled_scrolls = which;
+				impl_->cv_scroll->enabled_scrolls = which;
 				impl_->size_changed(false);
 				return true;
 			}
 
+			std::shared_ptr<scroll_operation_interface> content_view::scroll_operation() const
+			{
+				return std::make_shared<skeletons::scroll_operation>(impl_->cv_scroll);
+			}
+
 			void content_view::step(unsigned step_value, bool horz)
 			{
 				if (horz)
-					impl_->horz.step(step_value);
+					impl_->cv_scroll->horz.step(step_value);
 				else
-					impl_->vert.step(step_value);
+					impl_->cv_scroll->vert.step(step_value);
 			}
 
 			bool content_view::scroll(bool forwards, bool horz)
@@ -306,17 +355,17 @@ namespace nana {
 				}
 
 				if (horz)
-					return impl_->horz.make_step(forwards, speed);
+					return impl_->cv_scroll->horz.make_step(forwards, speed);
 				
-				return impl_->vert.make_step(forwards, speed);
+				return impl_->cv_scroll->vert.make_step(forwards, speed);
 			}
 
 			bool content_view::turn_page(bool forwards, bool horz)
 			{
 				if (horz)
-					return impl_->horz.make_page_scroll(forwards);
+					return impl_->cv_scroll->horz.make_page_scroll(forwards);
 				else
-					return impl_->vert.make_page_scroll(forwards);
+					return impl_->cv_scroll->vert.make_page_scroll(forwards);
 			}
 
 			void content_view::disp_area(const rectangle& da, const point& skew_horz, const point& skew_vert, const size& extra_px, bool try_update)
@@ -404,7 +453,7 @@ namespace nana {
 			void content_view::draw_corner(graph_reference graph)
 			{
 				auto r = corner();
-				if ((!r.empty()) && (scrolls::both == impl_->enabled_scrolls))
+				if ((!r.empty()) && (scrolls::both == impl_->cv_scroll->enabled_scrolls))
 					graph.rectangle(r, true, colors::button_face);
 			}
 
@@ -415,8 +464,8 @@ namespace nana {
 
 			rectangle content_view::view_area(const size& alt_content_size) const
 			{
-				bool const vert_allowed = (impl_->enabled_scrolls == scrolls::vert || impl_->enabled_scrolls == scrolls::both);
+				bool const vert_allowed = (impl_->cv_scroll->enabled_scrolls == scrolls::vert || impl_->cv_scroll->enabled_scrolls == scrolls::both);
-				bool const horz_allowed = (impl_->enabled_scrolls == scrolls::horz || impl_->enabled_scrolls == scrolls::both);
+				bool const horz_allowed = (impl_->cv_scroll->enabled_scrolls == scrolls::horz || impl_->cv_scroll->enabled_scrolls == scrolls::both);
 
 				unsigned extra_horz = (horz_allowed && (impl_->disp_area.width < alt_content_size.width) ? space() : 0);
 				unsigned extra_vert = (vert_allowed && (impl_->disp_area.height < alt_content_size.height + extra_horz) ? space() : 0);
@@ -435,13 +484,13 @@ namespace nana {
 
 			unsigned content_view::extra_space(bool horz) const
 			{
-				return ((horz ? impl_->horz.empty() : impl_->vert.empty()) ? 0 : space());
+				return ((horz ? impl_->cv_scroll->horz.empty() : impl_->cv_scroll->vert.empty()) ? 0 : space());
 			}
 
 			void content_view::change_position(int pos, bool aligned, bool horz)
 			{
 				if (aligned)
-					pos -= (pos % static_cast<int>(horz ? impl_->horz.step() : impl_->vert.step()));
+					pos -= (pos % static_cast<int>(horz ? impl_->cv_scroll->horz.step() : impl_->cv_scroll->vert.step()));
 
 				auto imd_size = this->view_area();
 
@@ -490,8 +539,8 @@ namespace nana {
 			void content_view::sync(bool passive)
 			{
 				impl_->passive = passive;
-				impl_->horz.value(impl_->origin.x);
+				impl_->cv_scroll->horz.value(impl_->origin.x);
-				impl_->vert.value(impl_->origin.y);
+				impl_->cv_scroll->vert.value(impl_->origin.y);
 				impl_->passive = true;
 			}
 
@@ -520,15 +569,15 @@ namespace nana {
 					impl_->origin.y = 0;
 
 				bool changed = false;
-				if (!impl_->horz.empty() && (static_cast<long long>(impl_->horz.value()) != impl_->origin.x))
+				if (!impl_->cv_scroll->horz.empty() && (static_cast<long long>(impl_->cv_scroll->horz.value()) != impl_->origin.x))
 				{
-					impl_->horz.value(impl_->origin.x);
+					impl_->cv_scroll->horz.value(impl_->origin.x);
 					changed = true;
 				}
 
-				if ((!impl_->vert.empty()) && (static_cast<long long>(impl_->vert.value()) != impl_->origin.y))
+				if ((!impl_->cv_scroll->vert.empty()) && (static_cast<long long>(impl_->cv_scroll->vert.value()) != impl_->origin.y))
 				{
-					impl_->vert.value(impl_->origin.y);
+					impl_->cv_scroll->vert.value(impl_->origin.y);
 					changed = true;
 				}
 

source/gui/widgets/skeletons/content_view.hpp

@@ -1,7 +1,7 @@
 /*
  *	A Content View Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2017-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -16,6 +16,7 @@
 
 #include <nana/gui/basis.hpp>
 #include <functional>
+#include <memory>
 
 namespace nana
 {
@@ -58,6 +59,8 @@ namespace skeletons
 
 		bool enable_scrolls(scrolls which);
 
+		std::shared_ptr<scroll_operation_interface> scroll_operation() const;
+
 		void step(unsigned step_value, bool horz);
 		bool scroll(bool forwards, bool horz);
 		bool turn_page(bool forwards, bool horz);
@@ -92,7 +95,7 @@ namespace skeletons
 			return 16;
 		}
 	private:
-		implementation * const impl_;
+		implementation* const impl_;
 	};
 }
 }

source/gui/widgets/skeletons/text_editor.cpp

@@ -1,7 +1,7 @@
 /*
  *	A text editor implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -1954,6 +1954,11 @@ namespace nana{	namespace widgets
 			return impl_->capacities.behavior->take_lines();
 		}
 
+		std::shared_ptr<scroll_operation_interface> text_editor::scroll_operation() const
+		{
+			return impl_->cview->scroll_operation();
+		}
+
 		void text_editor::draw_corner()
 		{
 			impl_->cview->draw_corner(graph_);

source/gui/widgets/textbox.cpp

@@ -1,7 +1,7 @@
 /*
  *	A Textbox Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -816,6 +816,16 @@ namespace drawerbase {
 			if(editor)
 				editor->reset_caret_pixels();
 		}
+
+		std::shared_ptr<scroll_operation_interface> textbox::_m_scroll_operation() const
+		{
+			internal_scope_guard lock;
+			auto editor = get_drawer_trigger().editor();
+			if (editor)
+				return editor->scroll_operation();
+
+			return {};
+		}
 	//end class textbox
 }//end namespace nana
 

source/gui/widgets/toolbar.cpp

@@ -1,7 +1,7 @@
 /*
  *	A Toolbar Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -47,8 +47,6 @@ namespace nana
 				{}
 			};
 
-
-
 			class item_container
 			{
 			public:
@@ -57,8 +55,7 @@ namespace nana
 
 				~item_container()
 				{
-					for(auto ptr : cont_)
+					clear();
-						delete ptr;
 				}
 
 				void insert(size_type pos, std::string text, const nana::paint::image& img, item_type::kind type)
@@ -120,6 +117,15 @@ namespace nana
 				{
 					return cont_.at(pos);
 				}
+
+				void clear()
+				{
+					for(auto ptr : cont_)
+						delete ptr;
+
+					cont_.clear();
+				}
+
 			private:
 				container_type cont_;
 				size_t    right_{ npos };
@@ -421,6 +427,12 @@ namespace nana
 					}
 				}
 			//class drawer
+
+			// Item Proxy
+			void item_proxy::enable(bool enable_state)
+			{
+				widget.enable(button, enable_state);
+			}
 		}//end namespace toolbar
 	}//end namespace drawerbase
 
@@ -449,16 +461,24 @@ namespace nana
 			API::refresh_window(handle());
 		}
 
-		void toolbar::append(const std::string& text, const nana::paint::image& img)
+		drawerbase::toolbar::item_proxy toolbar::append(const std::string& text, const nana::paint::image& img)
 		{
 			get_drawer_trigger().items().push_back(text, img);
 			API::refresh_window(handle());
+			return {*this, get_drawer_trigger().items().size() - 1u};
 		}
 
-		void toolbar::append(const std::string& text)
+		drawerbase::toolbar::item_proxy toolbar::append(const std::string& text)
 		{
 			get_drawer_trigger().items().push_back(text, {});
 			API::refresh_window(this->handle());
+			return {*this, get_drawer_trigger().items().size() - 1u};
+		}
+
+		void toolbar::clear()
+		{
+			get_drawer_trigger().items().clear();
+			API::refresh_window(this->handle());
 		}
 
 		bool toolbar::enable(size_type pos) const

source/gui/widgets/treebox.cpp

@@ -1,7 +1,7 @@
 /*
  *	A Treebox Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -29,6 +29,25 @@ namespace nana
 		{
 			using node_type = trigger::node_type;
 
+			class exclusive_scroll_operation
+				: public scroll_operation_interface
+			{
+			public:
+				exclusive_scroll_operation(std::shared_ptr<nana::scroll<true>>& scroll_wdg)
+					:scroll_(scroll_wdg)
+				{}
+
+				bool visible(bool vert) const override
+				{
+					if (vert)
+						return !scroll_->empty();
+
+					return false;
+				}
+			private:
+				std::shared_ptr<nana::scroll<true>> scroll_;
+			};
+
 			bool no_sensitive_compare(const std::string& text, const char *pattern, std::size_t len)
 			{
 				if(len <= text.length())
@@ -214,7 +233,7 @@ namespace nana
 				struct shape_tag
 				{
 					nana::upoint border;
-					nana::scroll<true> scroll;
+					std::shared_ptr<nana::scroll<true>> scroll;
 
 					mutable std::map<std::string, node_image_tag> image_table;
 
@@ -261,6 +280,7 @@ namespace nana
 					shape.first = nullptr;
 					shape.indent_pixels = 10;
 					shape.offset_x = 0;
+					shape.scroll = std::make_shared<nana::scroll<true>>();
 
 					attr.auto_draw = true;
 
@@ -598,7 +618,7 @@ namespace nana
 					std::size_t max_allow = max_allowed();
 					std::size_t visual_items = visual_item_size();
 
-					auto & scroll = shape.scroll;
+					auto & scroll = *shape.scroll;
 					if(visual_items <= max_allow)
 					{
 						if(!scroll.empty())
@@ -618,7 +638,7 @@ namespace nana
 								adjust.scroll_timestamp = nana::system::timestamp();
 								adjust.timer.start();
 
-								shape.first = attr.tree_cont.advance_if(nullptr, shape.scroll.value(), pred_allow_child{});
+								shape.first = attr.tree_cont.advance_if(nullptr, shape.scroll->value(), pred_allow_child{});
 								draw(false, false, true);
 							});
 						}
@@ -641,7 +661,7 @@ namespace nana
 					if(!data.graph)
 						return 0;
 
-					return static_cast<int>(data.graph->width() - (shape.scroll.empty() ? 0 : shape.scroll.size().width));
+					return static_cast<int>(data.graph->width() - (shape.scroll->empty() ? 0 : shape.scroll->size().width));
 				}
 
 				unsigned node_w_pixels(const node_type *node) const
@@ -958,10 +978,14 @@ namespace nana
 					return *this;
 				}
 
+
 				std::size_t item_proxy::size() const
 				{
 					std::size_t n = 0;
-					for(auto child = node_->child; child; child = child->child)
+
+					//Fixed by ErrorFlynn
+					//this method incorrectly returned the number of levels beneath the nodes using child = child->child
+					for(auto child = node_->child; child; child = child->next)
 						++n;
 
 					return n;
@@ -1897,7 +1921,7 @@ namespace nana
 
 				void trigger::mouse_wheel(graph_reference, const arg_wheel& arg)
 				{
-					auto & scroll = impl_->shape.scroll;
+					auto & scroll = *impl_->shape.scroll;
 					if (scroll.empty())
 						return;
 
@@ -1931,10 +1955,10 @@ namespace nana
 					impl_->draw(false);
 					API::dev::lazy_refresh();
 					impl_->show_scroll();
-					if(!impl_->shape.scroll.empty())
+					if(!impl_->shape.scroll->empty())
 					{
 						nana::size s = impl_->data.graph->size();
-						impl_->shape.scroll.move(rectangle{ static_cast<int>(s.width) - 16, 0, 16, s.height });
+						impl_->shape.scroll->move(rectangle{ static_cast<int>(s.width) - 16, 0, 16, s.height });
 					}
 				}
 
@@ -2209,5 +2233,11 @@ namespace nana
 		{
 			return item_proxy(const_cast<drawer_trigger_t*>(&get_drawer_trigger()), get_drawer_trigger().selected());
 		}
+
+		std::shared_ptr<scroll_operation_interface> treebox::_m_scroll_operation() const
+		{
+			internal_scope_guard lock;
+			return std::make_shared<drawerbase::treebox::exclusive_scroll_operation>(get_drawer_trigger().impl()->shape.scroll);
+		}
 	//end class treebox
 }//end namespace nana

source/gui/widgets/widget.cpp

@@ -1,6 +1,6 @@
 /*
  *	The fundamental widget class implementation
- *	Copyright(C) 2003-2016 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -158,6 +158,11 @@ namespace nana
 			return (API::focus_window() == handle());
 		}
 
+		std::shared_ptr<scroll_operation_interface> widget::scroll_operation()
+		{
+			return _m_scroll_operation();
+		}
+
 		void widget::show()
 		{
 			_m_show(true);
@@ -317,6 +322,11 @@ namespace nana
 			API::window_enabled(handle(), value);
 		}
 
+		std::shared_ptr<scroll_operation_interface> widget::_m_scroll_operation()
+		{
+			return {};
+		}
+
 		bool widget::_m_show(bool visible)
 		{
 			API::show_window(handle(), visible);

source/paint/detail/image_jpeg.hpp

@@ -91,7 +91,7 @@ namespace nana
 				{
 					::jpeg_create_decompress(&jdstru);
 
-					::jpeg_mem_src(&jdstru, const_cast<unsigned char*>(reinterpret_cast<const unsigned char*>(data)), bytes);
+					::jpeg_mem_src(&jdstru, const_cast<unsigned char*>(reinterpret_cast<const unsigned char*>(data)), static_cast<unsigned long>(bytes));
 					_m_read_jpg(jdstru);
 
 					jpeg_finish_decompress(&jdstru);

source/paint/graphics.cpp

@@ -1,7 +1,7 @@
 /*
  *	Paint Graphics Implementation
  *	Nana C++ Library(http://www.nanapro.org)
- *	Copyright(C) 2003-2017 Jinhao(cnjinhao@hotmail.com)
+ *	Copyright(C) 2003-2018 Jinhao(cnjinhao@hotmail.com)
  *
  *	Distributed under the Boost Software License, Version 1.0.
  *	(See accompanying file LICENSE_1_0.txt or copy at
@@ -127,11 +127,14 @@ namespace paint
 			return impl_->real_font->family();
 		}
 
-		double font::size() const
+		double font::size(bool fixed) const
 		{
-			if(empty()) return 0;
+			double size_pt = (empty() ? 0.0 : impl_->real_font->size());
 
-			return impl_->real_font->size();
+			if (fixed && (0.0 == size_pt))
+				return platform_abstraction::font_default_pt();
+
+			return size_pt;
 		}
 
 		bool font::bold() const

source/system/dataexch.cpp

@@ -208,7 +208,7 @@ namespace nana{ namespace system{
 					memcpy(addr, buf, size);
 					::GlobalUnlock(g);
 
-					unsigned data_format;
+					unsigned data_format = CF_MAX;
 					switch(fmt)
 					{
 					case format::text:		data_format = CF_UNICODETEXT;	break;
@@ -244,7 +244,7 @@ namespace nana{ namespace system{
 #if defined(NANA_WINDOWS)
 			if(::OpenClipboard(::GetFocus()))
 			{
-				unsigned data_format;
+				unsigned data_format = CF_MAX;
 				switch(fmt)
 				{
 				case format::text:		data_format = CF_UNICODETEXT;	break;