diff --git a/build/vc2017/nana.vcxproj b/build/vc2017/nana.vcxproj
index b1e450b8..818d6cf8 100644
--- a/build/vc2017/nana.vcxproj
+++ b/build/vc2017/nana.vcxproj
@@ -23,7 +23,7 @@
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     <Keyword>Win32Proj</Keyword>
     <RootNamespace>nana</RootNamespace>
-    <WindowsTargetPlatformVersion>10.0.15063.0</WindowsTargetPlatformVersion>
+    <WindowsTargetPlatformVersion>8.1</WindowsTargetPlatformVersion>
   </PropertyGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
@@ -163,6 +163,8 @@
     <ClCompile Include="..\..\source\detail\platform_abstraction.cpp" />
     <ClCompile Include="..\..\source\detail\platform_spec_windows.cpp" />
     <ClCompile Include="..\..\source\filesystem\filesystem.cpp" />
+    <ClCompile Include="..\..\source\gui\animation.cpp" />
+    <ClCompile Include="..\..\source\gui\basis.cpp" />
     <ClCompile Include="..\..\source\gui\detail\basic_window.cpp" />
     <ClCompile Include="..\..\source\gui\detail\bedrock_pi.cpp" />
     <ClCompile Include="..\..\source\gui\detail\bedrock_windows.cpp" />
@@ -173,6 +175,20 @@
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     <ClCompile Include="..\..\source\gui\detail\window_layout.cpp" />
     <ClCompile Include="..\..\source\gui\detail\window_manager.cpp" />
+    <ClCompile Include="..\..\source\gui\dragger.cpp" />
+    <ClCompile Include="..\..\source\gui\drawing.cpp" />
+    <ClCompile Include="..\..\source\gui\effects.cpp" />
+    <ClCompile Include="..\..\source\gui\element.cpp" />
+    <ClCompile Include="..\..\source\gui\filebox.cpp" />
+    <ClCompile Include="..\..\source\gui\layout_utility.cpp" />
+    <ClCompile Include="..\..\source\gui\msgbox.cpp" />
+    <ClCompile Include="..\..\source\gui\notifier.cpp" />
+    <ClCompile Include="..\..\source\gui\place.cpp" />
+    <ClCompile Include="..\..\source\gui\programming_interface.cpp" />
+    <ClCompile Include="..\..\source\gui\screen.cpp" />
+    <ClCompile Include="..\..\source\gui\state_cursor.cpp" />
+    <ClCompile Include="..\..\source\gui\timer.cpp" />
+    <ClCompile Include="..\..\source\gui\tooltip.cpp" />
     <ClCompile Include="..\..\source\gui\widgets\button.cpp" />
     <ClCompile Include="..\..\source\gui\widgets\categorize.cpp" />
     <ClCompile Include="..\..\source\gui\widgets\checkbox.cpp" />
@@ -199,6 +215,7 @@
     <ClCompile Include="..\..\source\gui\widgets\toolbar.cpp" />
     <ClCompile Include="..\..\source\gui\widgets\treebox.cpp" />
     <ClCompile Include="..\..\source\gui\widgets\widget.cpp" />
+    <ClCompile Include="..\..\source\gui\wvl.cpp" />
     <ClCompile Include="..\..\source\internationalization.cpp" />
     <ClCompile Include="..\..\source\paint\detail\image_process_provider.cpp" />
     <ClCompile Include="..\..\source\paint\detail\native_paint_interface.cpp" />
diff --git a/build/vc2017/nana.vcxproj.filters b/build/vc2017/nana.vcxproj.filters
index 13f8c102..ef973d0c 100644
--- a/build/vc2017/nana.vcxproj.filters
+++ b/build/vc2017/nana.vcxproj.filters
@@ -1,244 +1,287 @@
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\ No newline at end of file