Hi,
I process WM_ERASEBKGND message for WS_CHILD window:
In urect i always get {0,0,0,0}. That's why I ask: does DefWindowProc while processing WM_ERASEBKGND use update region or erase entire client area?
I process WM_ERASEBKGND message for WS_CHILD window:
Code:
case WM_ERASEBKGND:
GetUpdateRect(hWnd,&urect,FALSE);
//...........