Don't reference platform-specific assemblies.

Instead of referencing platform-specific targets in the sample
applications, copy the libs in a build task
(Shared\perspex.platform.targets) - the correct lib will then be loaded
dynamically at runtime.

samples/TestApplication/TestApplication.csproj

@@ -11,7 +11,8 @@
     <AssemblyName>TestApplication</AssemblyName>
     <TargetFrameworkVersion>v4.5</TargetFrameworkVersion>
     <FileAlignment>512</FileAlignment>
-    <NuGetPackageImportStamp>caf18def</NuGetPackageImportStamp>
+    <NuGetPackageImportStamp>
+    </NuGetPackageImportStamp>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
     <PlatformTarget>AnyCPU</PlatformTarget>
@@ -130,14 +131,6 @@
       <Project>{3E10A5FA-E8DA-48B1-AD44-6A5B6CB7750F}</Project>
       <Name>Perspex.Themes.Default</Name>
     </ProjectReference>
-    <ProjectReference Include="..\..\src\Windows\Perspex.Direct2D1\Perspex.Direct2D1.csproj">
-      <Project>{3e908f67-5543-4879-a1dc-08eace79b3cd}</Project>
-      <Name>Perspex.Direct2D1</Name>
-    </ProjectReference>
-    <ProjectReference Include="..\..\src\Windows\Perspex.Win32\Perspex.Win32.csproj">
-      <Project>{811a76cf-1cf6-440f-963b-bbe31bd72a82}</Project>
-      <Name>Perspex.Win32</Name>
-    </ProjectReference>
   </ItemGroup>
   <ItemGroup>
     <Content Include="github_icon.png">
@@ -145,13 +138,7 @@
     </Content>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <Import Project="..\..\packages\SharpDX.2.6.3\build\SharpDX.targets" Condition="Exists('..\..\packages\SharpDX.2.6.3\build\SharpDX.targets')" />
-  <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
-    <PropertyGroup>
-      <ErrorText>This project references NuGet package(s) that are missing on this computer. Enable NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
-    </PropertyGroup>
-    <Error Condition="!Exists('..\..\packages\SharpDX.2.6.3\build\SharpDX.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\SharpDX.2.6.3\build\SharpDX.targets'))" />
-  </Target>
+  <Import Project="..\..\src\Shared\perspex.platform.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">

samples/TestApplication/packages.config

@@ -9,8 +9,5 @@
   <package id="Rx-PlatformServices" version="2.2.5" targetFramework="net45" />
   <package id="Rx-XAML" version="2.2.5" targetFramework="net45" />
   <package id="Serilog" version="1.5.9" targetFramework="net45" />
-  <package id="SharpDX" version="2.6.3" targetFramework="net45" />
-  <package id="SharpDX.Direct2D1" version="2.6.3" targetFramework="net45" />
-  <package id="SharpDX.DXGI" version="2.6.3" targetFramework="net45" />
   <package id="Splat" version="1.6.2" targetFramework="net45" />
 </packages>

samples/XamlTestApplication/XamlTestApplication.csproj

@@ -68,18 +68,6 @@
       <HintPath>..\..\packages\Serilog.1.5.9\lib\net45\Serilog.FullNetFx.dll</HintPath>
       <Private>True</Private>
     </Reference>
-    <Reference Include="SharpDX, Version=2.6.3.0, Culture=neutral, PublicKeyToken=b4dcf0f35e5521f1, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>$(SharpDXPackageBinDir)\SharpDX.dll</HintPath>
-    </Reference>
-    <Reference Include="SharpDX.Direct2D1, Version=2.6.3.0, Culture=neutral, PublicKeyToken=b4dcf0f35e5521f1, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>$(SharpDXPackageBinDir)\SharpDX.Direct2D1.dll</HintPath>
-    </Reference>
-    <Reference Include="SharpDX.DXGI, Version=2.6.3.0, Culture=neutral, PublicKeyToken=b4dcf0f35e5521f1, processorArchitecture=MSIL">
-      <SpecificVersion>False</SpecificVersion>
-      <HintPath>$(SharpDXPackageBinDir)\SharpDX.DXGI.dll</HintPath>
-    </Reference>
     <Reference Include="Splat, Version=1.6.2.0, Culture=neutral, processorArchitecture=MSIL">
       <HintPath>..\..\packages\Splat.1.6.2\lib\Net45\Splat.dll</HintPath>
       <Private>True</Private>
@@ -181,14 +169,6 @@
       <Project>{3e53a01a-b331-47f3-b828-4a5717e77a24}</Project>
       <Name>Perspex.Markup.Xaml</Name>
     </ProjectReference>
-    <ProjectReference Include="..\..\src\Windows\Perspex.Direct2D1\Perspex.Direct2D1.csproj">
-      <Project>{3e908f67-5543-4879-a1dc-08eace79b3cd}</Project>
-      <Name>Perspex.Direct2D1</Name>
-    </ProjectReference>
-    <ProjectReference Include="..\..\src\Windows\Perspex.Win32\Perspex.Win32.csproj">
-      <Project>{811a76cf-1cf6-440f-963b-bbe31bd72a82}</Project>
-      <Name>Perspex.Win32</Name>
-    </ProjectReference>
   </ItemGroup>
   <ItemGroup>
     <Content Include="github_icon.png">
@@ -202,13 +182,7 @@
     </Resource>
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
-  <Import Project="..\..\packages\SharpDX.2.6.3\build\SharpDX.targets" Condition="Exists('..\..\packages\SharpDX.2.6.3\build\SharpDX.targets')" />
-  <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\SharpDX.2.6.3\build\SharpDX.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\SharpDX.2.6.3\build\SharpDX.targets'))" />
-  </Target>
+  <Import Project="..\..\src\Shared\perspex.platform.targets" />
   <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
        Other similar extension points exist, see Microsoft.Common.targets.
   <Target Name="BeforeBuild">

samples/XamlTestApplication/packages.config

@@ -14,9 +14,6 @@
   <package id="Rx-PlatformServices" version="2.2.5" targetFramework="net46" />
   <package id="Rx-XAML" version="2.2.5" targetFramework="net46" />
   <package id="Serilog" version="1.5.9" targetFramework="net46" />
-  <package id="SharpDX" version="2.6.3" targetFramework="net46" />
-  <package id="SharpDX.Direct2D1" version="2.6.3" targetFramework="net46" />
-  <package id="SharpDX.DXGI" version="2.6.3" targetFramework="net46" />
   <package id="Splat" version="1.6.2" targetFramework="net46" />
   <package id="Sprache" version="2.0.0.46" targetFramework="net46" />
   <package id="Sprache.SuperJMN" version="2.0.0.46" targetFramework="net46" />

src/Shared/perspex.platform.targets

@@ -0,0 +1,20 @@
+<?xml version="1.0" encoding="utf-8"?>
+
+<!-- Includes the Perspex platform-specific libraries in an application's output directory -->
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Condition="'$(MSBuildThisFileDirectory)' != '' And HasTrailingSlash('$(MSBuildThisFileDirectory)')">
+    <PlatformLib Include="$(MSBuildThisFileDirectory)..\Gtk\Perspex.Cairo\bin\$(Configuration)\Perspex.Cairo.dll" />
+    <PlatformLib Include="$(MSBuildThisFileDirectory)..\Gtk\Perspex.Gtk\bin\$(Configuration)\Perspex.Gtk.dll" />
+    <PlatformLib Include="$(MSBuildThisFileDirectory)..\Windows\Perspex.Direct2D1\bin\$(Configuration)\Perspex.Direct2D1.dll" />
+    <PlatformLib Include="$(MSBuildThisFileDirectory)..\Windows\Perspex.Direct2D1\bin\$(Configuration)\SharpDX.dll" />
+    <PlatformLib Include="$(MSBuildThisFileDirectory)..\Windows\Perspex.Direct2D1\bin\$(Configuration)\SharpDX.Direct2D1.dll" />
+    <PlatformLib Include="$(MSBuildThisFileDirectory)..\Windows\Perspex.Direct2D1\bin\$(Configuration)\SharpDX.DXGI.dll" />
+    <PlatformLib Include="$(MSBuildThisFileDirectory)..\Windows\Perspex.Win32\bin\$(Configuration)\Perspex.Win32.dll" />
+  </ItemGroup>
+  <PropertyGroup>
+    <PrepareForRunDependsOn>$(PrepareForRunDependsOn);CopyPlatformLibs</PrepareForRunDependsOn>
+  </PropertyGroup>
+  <Target Name="CopyPlatformLibs">
+    <Copy SourceFiles="@(PlatformLib)" DestinationFolder="$(OutDir)" ContinueOnError="true"/>
+  </Target>
+</Project>