--- a/dwt/events/SelectionListener.d	Sun Jul 06 18:45:41 2008 +0200
+++ b/dwt/events/SelectionListener.d	Fri Jul 11 23:01:25 2008 +0200
@@ -63,3 +63,62 @@
  */
 public void widgetDefaultSelected(SelectionEvent e);
 }
+
+
+
+/// Helper class for the dgListener template function
+private class _DgSelectionListenerWidgetSelectedT(Dg,T...) : SelectionListener {
+
+    alias ParameterTupleOf!(DgSel) DgArgs;
+    static assert( is(DgArgs == Tuple!(SelectionEvent,T)),
+                "Delegate args not correct" );
+
+    Dg dg;
+    T  t;
+
+    private this( Dg dg, T t ){
+        this.dg = dg;
+        static if( T.length > 0 ){
+            this.t = t;
+        }
+    }
+
+    public void widgetSelected(SelectionEvent e){
+        dg(e,t);
+    }
+    public void widgetDefaultSelected(SelectionEvent e){
+    }
+}
+
+private class _DgSelectionListenerWidgetDefaultSelectedT(Dg,T...) : SelectionListener {
+
+    alias ParameterTupleOf!(DgSel) DgArgs;
+    static assert( is(DgArgs == Tuple!(SelectionEvent,T)),
+                "Delegate args not correct" );
+
+    Dg dg;
+    T  t;
+
+    private this( Dg dg, T t ){
+        this.dg = dg;
+        static if( T.length > 0 ){
+            this.t = t;
+        }
+    }
+
+    public void widgetSelected(SelectionEvent e){
+    }
+    public void widgetDefaultSelected(SelectionEvent e){
+        dg(e,t);
+    }
+}
+
+SelectionListener dgSelectionListenerWidgetSelected( Dg, T... )( Dg dg, T args ){
+    return new _DgSelectionListenerWidgetSelectedT!( Dg, T )( dg, args );
+}
+SelectionListener dgSelectionListenerWidgetDefaultSelected( Dg, T... )( Dg dg, T args ){
+    return new _DgSelectionListenerWidgetDefaultSelectedT!( Dg, T )( dg, args );
+}
+
+
+