diff --git a/bazaar/SurfaceCtrl_Demo/SurfaceCtrl_Demo.h b/bazaar/SurfaceCtrl_Demo/SurfaceCtrl_Demo.h
index 6ca5f2d59..f4fb05a8d 100644
--- a/bazaar/SurfaceCtrl_Demo/SurfaceCtrl_Demo.h
+++ b/bazaar/SurfaceCtrl_Demo/SurfaceCtrl_Demo.h
@@ -12,6 +12,8 @@ class SurfaceCtrl_Demo : public WithSurfaceCtrl_DemoLayout<TopWindow> {
 public:
 	typedef SurfaceCtrl_Demo CLASSNAME;
 	SurfaceCtrl_Demo();
+	virtual void Layout();
+
 };
 }
 #endif
diff --git a/bazaar/SurfaceCtrl_Demo/main.cpp b/bazaar/SurfaceCtrl_Demo/main.cpp
index 96dd7b0a6..4852a527d 100644
--- a/bazaar/SurfaceCtrl_Demo/main.cpp
+++ b/bazaar/SurfaceCtrl_Demo/main.cpp
@@ -26,6 +26,10 @@ namespace Upp{
 		};
 		Sizeable().Zoomable();
 	}
+	
+	void SurfaceCtrl_Demo::Layout(){
+		canvas.GLResize(GetSize().cx,GetSize().cy);
+	}
 }
 
 GUI_APP_MAIN