Index: Core/Common/src/Core.Common.Controls.TreeView/Core.Common.Controls.TreeView.csproj
===================================================================
diff -u -ra91b94077e89808e1b4cb489c431e2493a793111 -r6ecc9c396a74fb187d28eadd23734a4b7e720acf
--- Core/Common/src/Core.Common.Controls.TreeView/Core.Common.Controls.TreeView.csproj	(.../Core.Common.Controls.TreeView.csproj)	(revision a91b94077e89808e1b4cb489c431e2493a793111)
+++ Core/Common/src/Core.Common.Controls.TreeView/Core.Common.Controls.TreeView.csproj	(.../Core.Common.Controls.TreeView.csproj)	(revision 6ecc9c396a74fb187d28eadd23734a4b7e720acf)
@@ -1,5 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <Import Project="$(SolutionDir)build\Source.targets" />
+  <PropertyGroup>
+    <UseWindowsForms>true</UseWindowsForms>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="System" />
     <Reference Include="System.Core" />
Index: Core/Common/src/Core.Common.Controls/Core.Common.Controls.csproj
===================================================================
diff -u -ra91b94077e89808e1b4cb489c431e2493a793111 -r6ecc9c396a74fb187d28eadd23734a4b7e720acf
--- Core/Common/src/Core.Common.Controls/Core.Common.Controls.csproj	(.../Core.Common.Controls.csproj)	(revision a91b94077e89808e1b4cb489c431e2493a793111)
+++ Core/Common/src/Core.Common.Controls/Core.Common.Controls.csproj	(.../Core.Common.Controls.csproj)	(revision 6ecc9c396a74fb187d28eadd23734a4b7e720acf)
@@ -1,5 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <Import Project="$(SolutionDir)build\Source.targets" />
+  <PropertyGroup>
+    <UseWindowsForms>true</UseWindowsForms>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="PresentationCore" />
     <Reference Include="PresentationFramework" />
Index: Core/Common/src/Core.Common.Util/Core.Common.Util.csproj
===================================================================
diff -u -ra91b94077e89808e1b4cb489c431e2493a793111 -r6ecc9c396a74fb187d28eadd23734a4b7e720acf
--- Core/Common/src/Core.Common.Util/Core.Common.Util.csproj	(.../Core.Common.Util.csproj)	(revision a91b94077e89808e1b4cb489c431e2493a793111)
+++ Core/Common/src/Core.Common.Util/Core.Common.Util.csproj	(.../Core.Common.Util.csproj)	(revision 6ecc9c396a74fb187d28eadd23734a4b7e720acf)
@@ -1,5 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <Import Project="$(SolutionDir)build\Source.targets" />
+  <PropertyGroup>
+    <UseWindowsForms>true</UseWindowsForms>
+    <UseWPF>true</UseWPF>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="PresentationCore" />
     <Reference Include="System" />
Index: Core/Common/test/Core.Common.TestUtil/Core.Common.TestUtil.csproj
===================================================================
diff -u -ra91b94077e89808e1b4cb489c431e2493a793111 -r6ecc9c396a74fb187d28eadd23734a4b7e720acf
--- Core/Common/test/Core.Common.TestUtil/Core.Common.TestUtil.csproj	(.../Core.Common.TestUtil.csproj)	(revision a91b94077e89808e1b4cb489c431e2493a793111)
+++ Core/Common/test/Core.Common.TestUtil/Core.Common.TestUtil.csproj	(.../Core.Common.TestUtil.csproj)	(revision 6ecc9c396a74fb187d28eadd23734a4b7e720acf)
@@ -1,5 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <Import Project="$(SolutionDir)build\TestUtil.targets" />
+  <PropertyGroup>
+    <UseWindowsForms>true</UseWindowsForms>
+  </PropertyGroup>
   <ItemGroup>
     <Compile Remove="test-data\**" />
     <EmbeddedResource Remove="test-data\**" />
Index: Core/Components/src/Core.Components.GraphSharp.Forms/Core.Components.GraphSharp.Forms.csproj
===================================================================
diff -u -ra91b94077e89808e1b4cb489c431e2493a793111 -r6ecc9c396a74fb187d28eadd23734a4b7e720acf
--- Core/Components/src/Core.Components.GraphSharp.Forms/Core.Components.GraphSharp.Forms.csproj	(.../Core.Components.GraphSharp.Forms.csproj)	(revision a91b94077e89808e1b4cb489c431e2493a793111)
+++ Core/Components/src/Core.Components.GraphSharp.Forms/Core.Components.GraphSharp.Forms.csproj	(.../Core.Components.GraphSharp.Forms.csproj)	(revision 6ecc9c396a74fb187d28eadd23734a4b7e720acf)
@@ -1,5 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <Import Project="$(SolutionDir)build\Source.targets" />
+  <PropertyGroup>
+    <UseWindowsForms>true</UseWindowsForms>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="PresentationCore" />
     <Reference Include="PresentationFramework" />
Index: Core/Components/src/Core.Components.GraphSharp/Core.Components.GraphSharp.csproj
===================================================================
diff -u -ra91b94077e89808e1b4cb489c431e2493a793111 -r6ecc9c396a74fb187d28eadd23734a4b7e720acf
--- Core/Components/src/Core.Components.GraphSharp/Core.Components.GraphSharp.csproj	(.../Core.Components.GraphSharp.csproj)	(revision a91b94077e89808e1b4cb489c431e2493a793111)
+++ Core/Components/src/Core.Components.GraphSharp/Core.Components.GraphSharp.csproj	(.../Core.Components.GraphSharp.csproj)	(revision 6ecc9c396a74fb187d28eadd23734a4b7e720acf)
@@ -1,5 +1,9 @@
 <Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
   <Import Project="$(SolutionDir)build\Source.targets" />
+  <PropertyGroup>
+    <UseWPF>true</UseWPF>
+    <UseWindowsForms>true</UseWindowsForms>
+  </PropertyGroup>
   <ItemGroup>
     <Reference Include="PresentationCore" />
     <Reference Include="System" />