diff --git a/dlanguilib.dproj b/dlanguilib.dproj
index eda50e6e..73373999 100644
--- a/dlanguilib.dproj
+++ b/dlanguilib.dproj
@@ -180,6 +180,8 @@
     <Compile Include="src\dlangui\graphics\resources.d" />
     <Compile Include="src\dlangui\widgets\menu.d" />
     <Compile Include="src\dlangui\widgets\popup.d" />
+    <Compile Include="src\dlangui\core\collections.d" />
+    <Compile Include="src\dlangui\core\signals.d" />
   </ItemGroup>
   <ItemGroup>
     <Folder Include="src\dlangui\platforms\x11\" />
diff --git a/examples/example1/example1.dproj b/examples/example1/example1.dproj
index 420d75e7..0c7aceeb 100644
--- a/examples/example1/example1.dproj
+++ b/examples/example1/example1.dproj
@@ -52,6 +52,6 @@
     <Target>Executable</Target>
   </PropertyGroup>
   <ItemGroup>
-    <Compile Include="src/main.d" />
+    <Compile Include="src\main.d" />
   </ItemGroup>
 </Project>
\ No newline at end of file
diff --git a/src/dlangui/widgets/widget.d b/src/dlangui/widgets/widget.d
index a3f199b5..c0635dfc 100644
--- a/src/dlangui/widgets/widget.d
+++ b/src/dlangui/widgets/widget.d
@@ -36,8 +36,6 @@ import dlangui.platforms.common.platform;
 
 import std.algorithm;
 
-alias onClick_t = bool delegate(Widget);
-
 
 /// Visibility (see Android View Visibility)
 enum Visibility : ubyte {