add cppwinrt nuget package

packages.config

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<packages>
+  <package id="Microsoft.Windows.CppWinRT" version="2.0.220608.4" targetFramework="native" />
+</packages>

simplewall.vcxproj

@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="packages\Microsoft.Windows.CppWinRT.2.0.220608.4\build\native\Microsoft.Windows.CppWinRT.props" Condition="Exists('packages\Microsoft.Windows.CppWinRT.2.0.220608.4\build\native\Microsoft.Windows.CppWinRT.props')" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|ARM64">
       <Configuration>Debug</Configuration>
@@ -367,6 +368,7 @@
     <ClCompile Include="src\search.c" />
     <ClCompile Include="src\security.c" />
     <ClCompile Include="src\timer.c" />
+    <ClCompile Include="src\uwp.cpp" />
     <ClCompile Include="src\wfp.c" />
     <ClCompile Include="src\messages.c" />
   </ItemGroup>
@@ -395,13 +397,25 @@
     <ClInclude Include="src\search.h" />
     <ClInclude Include="src\security.h" />
     <ClInclude Include="src\timer.h" />
+    <ClInclude Include="src\uwp.h" />
     <ClInclude Include="src\wfp.h" />
     <ClInclude Include="src\messages.h" />
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="src\resource.rc" />
   </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
   <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
   <ImportGroup Label="ExtensionTargets">
+    <Import Project="packages\Microsoft.Windows.CppWinRT.2.0.220608.4\build\native\Microsoft.Windows.CppWinRT.targets" Condition="Exists('packages\Microsoft.Windows.CppWinRT.2.0.220608.4\build\native\Microsoft.Windows.CppWinRT.targets')" />
   </ImportGroup>
+  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
+    <PropertyGroup>
+      <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
+    </PropertyGroup>
+    <Error Condition="!Exists('packages\Microsoft.Windows.CppWinRT.2.0.220608.4\build\native\Microsoft.Windows.CppWinRT.props')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.CppWinRT.2.0.220608.4\build\native\Microsoft.Windows.CppWinRT.props'))" />
+    <Error Condition="!Exists('packages\Microsoft.Windows.CppWinRT.2.0.220608.4\build\native\Microsoft.Windows.CppWinRT.targets')" Text="$([System.String]::Format('$(ErrorText)', 'packages\Microsoft.Windows.CppWinRT.2.0.220608.4\build\native\Microsoft.Windows.CppWinRT.targets'))" />
+  </Target>
 </Project>

simplewall.vcxproj.filters

@@ -72,6 +72,9 @@
     <ClCompile Include="..\routine\src\routine.c">
       <Filter>Source Files</Filter>
     </ClCompile>
+    <ClCompile Include="src\uwp.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="src\main.h">
@@ -152,10 +155,16 @@
     <ClInclude Include="..\routine\src\routine.h">
       <Filter>Header Files</Filter>
     </ClInclude>
+    <ClInclude Include="src\uwp.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="src\resource.rc">
       <Filter>Resource Files</Filter>
     </ResourceCompile>
   </ItemGroup>
+  <ItemGroup>
+    <None Include="packages.config" />
+  </ItemGroup>
 </Project>