--- a/javauis/eswt_qt/org.eclipse.swt/Eclipse_SWT_PI/qt/org/eclipse/swt/internal/qt/graphics/WindowSurface.java	Fri Sep 17 16:44:34 2010 +0300
+++ b/javauis/eswt_qt/org.eclipse.swt/Eclipse_SWT_PI/qt/org/eclipse/swt/internal/qt/graphics/WindowSurface.java	Mon Oct 04 11:29:25 2010 +0300
@@ -160,6 +160,17 @@
     	OS.windowsurface_refresh(handle);
     }
     
+    /**
+     * Switch to software rendering when the window is going invisible 
+     * and back to hardware accelerated rendering when going visible.
+     * @param goingVisible True if the window is about to become visible (partially or fully).
+     *                     False if the window is about to become invisible (fully).
+     */
+    public void handleSymbianWindowVisibilityChange(boolean goingVisible)
+    {
+        OS.windowsurface_handleSymbianWindowVisibilityChange(handle, goingVisible);
+    }
+    
     private void checkState() {
     	Utils.validateUiThread();
     	if (disposed) {