diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 00000000..87593cf6
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,127 @@
+# CMake configuration for Nana
+# Author: Andrew Kornilov(https://github.com/ierofant)
+# Contributor:
+#	Robert Hauck - Enable support for PNG/Freetype
+
+project(nana)
+cmake_minimum_required(VERSION 2.8)
+
+
+#Select platform automatically
+if(WIN32)
+	add_definitions(-DNANA_WINDOWS)
+	add_definitions(-DPLATFORM_SPEC_HPP=<nana/detail/win32/platform_spec.hpp>)
+
+	#Test if it is MINGW
+	if(MINGW)
+		add_definitions(-DNANA_MINGW)
+		add_definitions(-DSTD_CODECVT_NOT_SUPPORTED)
+		option(NANA_THREAD_NOT_SUPPORTED "Use this flag if MinGW version is older than 4.8.1" ON)
+		if(NANA_THREAD_NOT_SUPPORTED)
+			add_definitions(-DSTD_THREAD_NOT_SUPPORTED)
+		endif()
+	endif()
+endif()
+if(UNIX)
+	add_definitions(-DNANA_LINUX)
+	add_definitions(-DNANA_X11)
+	add_definitions(-DPLATFORM_SPEC_HPP=<nana/detail/linux_X11/platform_spec.hpp>)
+	add_definitions(-DSTD_CODECVT_NOT_SUPPORTED)
+endif()
+
+
+#Global MSVC definitions
+if(WIN32)
+	if(MSVC)
+		option(WIN32_USE_MP "Set to ON to build nana with the /MP option (Visual Studio 2005 and above)." ON)
+		if(WIN32_USE_MP)
+			set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /MP")
+		endif()
+		
+		# More MSVC specific compilation flags
+		add_definitions(-D_SCL_SECURE_NO_WARNINGS)
+		add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
+	endif(MSVC)
+endif(WIN32)
+
+
+#Unicode
+option(NANA_UNICODE "Use Unicode Character Set" ON)
+if(NANA_UNICODE)
+	add_definitions(-DNANA_UNICODE)
+	if(WIN32)
+		add_definitions(-DUNICODE -D_UNICODE)
+	endif()
+endif()
+
+
+#Find PNG
+if(UNIX)
+	find_package(Freetype)
+	if (FREETYPE_FOUND)
+		include_directories( ${FREETYPE_INCLUDE_DIRS})
+	endif()
+endif()
+
+option(NANA_ENABLE_PNG "Enable the use of PNG" ON)
+if(NANA_ENABLE_PNG)
+	add_definitions(-DNANA_ENABLE_PNG)
+
+	option(NANA_LIBPNG "Use the included libpng" ON)
+	if(NANA_LIBPNG)
+		add_definitions(-DNANA_LIBPNG)
+	else()
+		find_package(PNG)
+		if (PNG_FOUND)
+			include_directories( ${PNG_INCLUDE_DIRS})
+		endif()
+	endif()
+endif()
+
+
+
+#Copy our new config.hpp (with removed defines)
+execute_process(COMMAND ${CMAKE_COMMAND} -E copy_if_different ${CMAKE_SOURCE_DIR}/build/cmake/config.hpp ${CMAKE_SOURCE_DIR}/include/nana/)
+
+
+set(NANA_SOURCE_DIR ${CMAKE_SOURCE_DIR}/source)
+set(NANA_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/include)
+
+if(CMAKE_COMPILER_IS_GNUCXX)
+	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall")
+endif(CMAKE_COMPILER_IS_GNUCXX)
+
+include_directories(${NANA_INCLUDE_DIR})
+aux_source_directory(${NANA_SOURCE_DIR} NANA_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/detail NANA_DETAIL_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/filesystem NANA_FILESYSTEM_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/audio NANA_AUDIO_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/audio/detail NANA_AUDIO_DETAIL_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/gui NANA_GUI_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/gui/detail NANA_GUI_DETAIL_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/gui/widgets NANA_GUI_WIDGETS_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/gui/widgets/skeletons NANA_GUI_WIDGETS_SKELETONS_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/paint NANA_PAINT_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/paint/detail NANA_PAINT_DETAIL_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/system NANA_SYSTEM_SOURCE)
+aux_source_directory(${NANA_SOURCE_DIR}/threads NANA_THREADS_SOURCE)
+
+add_library(${PROJECT_NAME} ${NANA_SOURCE}
+							${NANA_DETAIL_SOURCE}
+							${NANA_FILESYSTEM_SOURCE}
+							${NANA_AUDIO_SOURCE}
+							${NANA_AUDIO_DETAIL_SOURCE}
+							${NANA_GUI_SOURCE}
+							${NANA_GUI_DETAIL_SOURCE}
+							${NANA_GUI_WIDGETS_SOURCE}
+							${NANA_GUI_WIDGETS_SKELETONS_SOURCE}
+							${NANA_PAINT_SOURCE}
+							${NANA_PAINT_DETAIL_SOURCE}
+							${NANA_SYSTEM_SOURCE}
+							${NANA_THREADS_SOURCE})
+
+
+install(TARGETS ${PROJECT_NAME}
+			ARCHIVE DESTINATION lib
+			LIBRARY DESTINATION lib)
+install(DIRECTORY ${NANA_INCLUDE_DIR}/nana DESTINATION include)
\ No newline at end of file
diff --git a/build/cmake/CMakeLists.txt b/build/cmake/CMakeLists.txt
deleted file mode 100644
index e04ee417..00000000
--- a/build/cmake/CMakeLists.txt
+++ /dev/null
@@ -1,50 +0,0 @@
-# CMake configuration for Nana
-# Author: ierofant(https://github.com/ierofant)
-
-project(nana)
-cmake_minimum_required(VERSION 2.8)
-
-string(REGEX REPLACE "/[^/]*$" "" CMAKE_SOURCE_DIR ${CMAKE_SOURCE_DIR})
-string(REGEX REPLACE "/[^/]*$" "" CMAKE_SOURCE_DIR ${CMAKE_SOURCE_DIR})
-
-set(NANA_SOURCE_DIR ${CMAKE_SOURCE_DIR}/source)
-set(NANA_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/include)
-
-if(CMAKE_COMPILER_IS_GNUCXX)
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -Wall")
-endif(CMAKE_COMPILER_IS_GNUCXX)
-
-include_directories(${NANA_INCLUDE_DIR})
-aux_source_directory(${NANA_SOURCE_DIR} NANA_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/detail NANA_DETAIL_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/filesystem NANA_FILESYSTEM_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/audio NANA_AUDIO_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/audio/detail NANA_AUDIO_DETAIL_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/gui NANA_GUI_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/gui/detail NANA_GUI_DETAIL_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/gui/widgets NANA_GUI_WIDGETS_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/gui/widgets/skeletons NANA_GUI_WIDGETS_SKELETONS_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/paint NANA_PAINT_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/paint/detail NANA_PAINT_DETAIL_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/system NANA_SYSTEM_SOURCE)
-aux_source_directory(${NANA_SOURCE_DIR}/threads NANA_THREADS_SOURCE)
-
-add_library(${PROJECT_NAME} ${NANA_SOURCE}
-							${NANA_DETAIL_SOURCE}
-							${NANA_FILESYSTEM_SOURCE}
-							${NANA_AUDIO_SOURCE}
-							${NANA_AUDIO_DETAIL_SOURCE}
-							${NANA_GUI_SOURCE}
-							${NANA_GUI_DETAIL_SOURCE}
-							${NANA_GUI_WIDGETS_SOURCE}
-							${NANA_GUI_WIDGETS_SKELETONS_SOURCE}
-							${NANA_PAINT_SOURCE}
-							${NANA_PAINT_DETAIL_SOURCE}
-							${NANA_SYSTEM_SOURCE}
-							${NANA_THREADS_SOURCE})
-
-
-install(TARGETS ${PROJECT_NAME}
-			ARCHIVE DESTINATION lib
-			LIBRARY DESTINATION lib)
-install(DIRECTORY ${NANA_INCLUDE_DIR}/nana DESTINATION include)
\ No newline at end of file
diff --git a/build/cmake/config.hpp b/build/cmake/config.hpp
new file mode 100644
index 00000000..08527a55
--- /dev/null
+++ b/build/cmake/config.hpp
@@ -0,0 +1,18 @@
+/*
+ *	Nana Configuration
+ *	Nana C++ Library(http://www.nanapro.org)
+ *	Copyright(C) 2003-2014 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/config.hpp
+ */
+
+#ifndef NANA_CONFIG_HPP
+#define NANA_CONFIG_HPP
+
+//All defines have been moved to the CMakelists.txt in the root directory.
+
+#endif	//NANA_CONFIG_HPP
diff --git a/source/gui/detail/win32/bedrock.cpp b/source/gui/detail/win32/bedrock.cpp
index 555fcbaf..7820227c 100644
--- a/source/gui/detail/win32/bedrock.cpp
+++ b/source/gui/detail/win32/bedrock.cpp
@@ -1320,6 +1320,7 @@ namespace detail
 					arg.ignore = false;
 					brock.emit(event_code::shortkey, msgwnd, arg, true, &context);
 				}
+				def_window_proc = true;
 				break;
 			case WM_SYSKEYDOWN:
 				if(brock.whether_keyboard_shortkey() == false)
@@ -1340,6 +1341,7 @@ namespace detail
 					else if(brock.get_menu())
 						brock.remove_menu();
 				}
+				def_window_proc = true;
 				break;
 			case WM_SYSKEYUP:
 				if(brock.set_keyboard_shortkey(false) == false)
@@ -1356,6 +1358,7 @@ namespace detail
 						brock.emit(event_code::key_release, msgwnd, arg, true, &context);
 					}
 				}
+				def_window_proc = true;
 				break;
 			case WM_KEYDOWN:
 				if(msgwnd->flags.enabled)
diff --git a/source/gui/widgets/slider.cpp b/source/gui/widgets/slider.cpp
index e0ca0442..23af12a4 100644
--- a/source/gui/widgets/slider.cpp
+++ b/source/gui/widgets/slider.cpp
@@ -198,12 +198,12 @@ namespace nana
 
 				unsigned vcur() const
 				{
-					return attr_.vcur;
+					return static_cast<unsigned>(attr_.vcur);
 				}
 
 				void resize()
 				{
-					this->_m_mk_slider_pos_by_value();
+					_m_mk_slider_pos_by_value();
 					attr_.adorn_pos = attr_.pos;
 				}
 
@@ -338,16 +338,18 @@ namespace nana
 
 				unsigned move_step(bool forward)
 				{
-					unsigned cmpvalue = attr_.vcur;
+					unsigned cmpvalue = static_cast<unsigned>(attr_.vcur);
+					auto value = cmpvalue;
 					if(forward)
 					{
-						if(attr_.vcur)
-							--attr_.vcur;
+						if (value)
+							--value;
 					}
-					else if(attr_.vcur < attr_.vmax)
-						++attr_.vcur;
+					else if (value < attr_.vmax)
+						++value;
 
-					if(cmpvalue != attr_.vcur)
+					attr_.vcur = value;
+					if (cmpvalue != value)
 					{
 						_m_mk_slider_pos_by_value();
 						draw();
@@ -436,32 +438,29 @@ namespace nana
 					return static_cast<int>(_m_scale() * attr_.vcur / attr_.vmax);
 				}
 
-				unsigned _m_mk_slider_value_by_pos()
+				void _m_mk_slider_value_by_pos()
 				{
 					if(_m_scale())
 					{
-						auto cmpvalue = attr_.vcur;
-						attr_.vcur = static_cast<unsigned>(attr_.pos * attr_.vmax / _m_scale());
-						if (cmpvalue != attr_.vcur)
+						auto cmpvalue = static_cast<int>(attr_.vcur);
+						attr_.vcur = (attr_.pos * attr_.vmax / _m_scale());
+						if (cmpvalue != static_cast<int>(attr_.vcur))
 							_m_emit_value_changed();
 					}
-					return attr_.vcur;
 				}
 
-				int _m_mk_slider_pos_by_value()
+				void _m_mk_slider_pos_by_value()
 				{
 					attr_.pos = double(_m_scale()) * attr_.vcur / attr_.vmax;
 
 					if(slider_state_.trace == slider_state_.TraceNone)
 						attr_.adorn_pos = attr_.pos;
-					
-					return static_cast<int>(attr_.pos);
 				}
 
 				unsigned _m_value_by_pos(double pos) const
 				{
 					if(_m_scale())
-						return static_cast<int>(pos * attr_.vmax / _m_scale());
+						return static_cast<unsigned>(pos * attr_.vmax / _m_scale());
 					return 0;
 				}
 
@@ -548,7 +547,7 @@ namespace nana
 					style dir;
 					unsigned border;
 					unsigned vmax;
-					unsigned vcur;
+					double vcur;
 					double		pos;
 					bool		is_draw_adorn;
 					double		adorn_pos;