PCB_LAYER_WIDGET became able to cooperate with PCB_BASE_FRAME.

pcbnew/layer_widget.cpp

@@ -44,6 +44,8 @@
 #define BUTT_SIZE_Y             18
 #define BUTT_VOID               4
 
+const wxEventType LAYER_WIDGET::EVT_LAYER_COLOR_CHANGE = wxNewEventType();
+
 /* XPM
  * This bitmap is used for not selected layers
  */
@@ -294,6 +296,10 @@ void LAYER_WIDGET::OnMiddleDownLayerColor( wxMouseEvent& event )
 
         // tell the client code.
         OnLayerColorChange( layer, newColor );
+
+        // notify others
+        wxCommandEvent event( EVT_LAYER_COLOR_CHANGE );
+        wxPostEvent( this, event );
     }
 
     passOnFocus();