Merge branch 'mihaizh-fix_filebox_multi_select' into hotfix-1.7.2

.travis.yml

@@ -44,7 +44,7 @@ matrix:
 
 before_install:
   - cd ..
-  - git clone --depth=1 --branch=develop https://github.com/qPCR4vir/nana-demo.git nana-demo
+  - git clone --depth=1 --branch=master https://github.com/qPCR4vir/nana-demo.git nana-demo
   - export PATH="$HOME/bin:$PATH"
   - wget --no-check-certificate --no-clobber -O /tmp/tools/cmake https://cmake.org/files/v3.12/cmake-3.12.0-rc3-Linux-x86_64.sh || true
   - chmod -R +x /tmp/tools

source/gui/filebox.cpp

@@ -1516,14 +1516,24 @@ namespace nana
 
 			path_type parent_path{ str };
 			str += (len + 1);
-
-			while(*str)
+			
+			// if only one file was selected, the ofn.lpstrFile
+			// is returning only that file, without any parent
+			if (!*str)
 			{
-				len = ::wcslen(str);
-				targets.emplace_back(parent_path / path_type{str});
-				str += (len + 1);
+				targets.emplace_back(parent_path);
+				impl_->path = parent_path.parent_path().u8string();
+			}
+			else
+			{
+				while(*str)
+				{
+					len = ::wcslen(str);
+					targets.emplace_back(parent_path / path_type{str});
+					str += (len + 1);
+				}
+				impl_->path = parent_path.u8string();
 			}
-			impl_->path = parent_path.u8string();
 		}
 		else
 		{