diff -r 41300fa6a67c -r f7bc934e204c src/opengl/qglpaintdevice_p.h
--- a/src/opengl/qglpaintdevice_p.h	Tue Feb 02 00:43:10 2010 +0200
+++ b/src/opengl/qglpaintdevice_p.h	Wed Mar 31 11:06:36 2010 +0300
@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
 ** All rights reserved.
 ** Contact: Nokia Corporation (qt-info@nokia.com)
 **
@@ -75,6 +75,7 @@
     virtual QGLContext* context() const = 0;
     virtual QGLFormat format() const;
     virtual QSize size() const = 0;
+    virtual bool alphaRequested() const;
 
     // returns the QGLPaintDevice for the given QPaintDevice
     static QGLPaintDevice* getDevice(QPaintDevice*);