Someone can explain how to create WndProc that is handling bug caused by WS_EX_COMPOSITED (the bug is endless WM_PAINT on some controls) ?
All what i use for WS_EX_COMPOSITED is when my app window is hidden to be able to take screenshot of it(if WS_EX_COMPOSITED not set, PrintWindow fails), i get screenshot but the CPU usage is 99% always.
Here is information i found from google: Never ending WM_PAINT loop with ATL CWindowImpl http://forums.codeguru.com/showthread.php?t=483719
But doesnt give me very brightness... the only change i added to my WndProc is the following:
if(Msg==WM_PAINT||Msg==WM_NCPAINT||Msg==WM_ERASEBKGND) { return DefWindowProc(hWnd,Msg,wParam,lParam); }
It lowers the CPU usage but its not painting all controls correctly.