Button Ownerdraw - Transparency Issue
C / C++ / MFC
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- I've created a CPngButton from CBitmapButton. - It overrides DrawItem() and draws the given PNG image using GDI+. - The wm_erasebkgnd and wm_ctlcolor is taken care. - while displaing the CMainFrame its displaying properly. - Later if we resize the window couple of times, the transparent portions of button becomes black. - OS is Windows 7 with Aero enabled. - Screenshot is here[^] - Any idea what I'm missing here? (Some more information: The buttons are hosted on a CWnd as container. This CWnd is placed over left of menubar to looks like a quick access toolbar, which is a requirement). Best Regards, Jijo.
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