Thread: WM_CTLCOLORSTATIC and Read Only Edit Controls

Hi, I'm having confusion with the effect of the return value of WM_CTLCOLORSTATIC with read only edit controls.

In my main WndProc's WM_CREATE's handler includes:

Code:

hwndInfoEdit = CreateWindowEx(NULL, TEXT("edit"), NULL, WS_CHILD | WS_VISIBLE | 
			      ES_MULTILINE | ES_AUTOVSCROLL |
			      ES_READONLY, 25, 25, 25, 25, hWnd, NULL,
			      ((LPCREATESTRUCT)lParam) -> hInstance, NULL);

Which should create a read only edit control.

I also handled WM_CTLCOLORSTATIC in the same WndProc:

Code:

case WM_CTLCOLORSTATIC:
		{
			HDC hdcStatic = (HDC)wParam;
			HWND hwndStatic = (HWND)lParam;

			if(hwndStatic == hwndInfoEdit)
			{
				MessageBeep(0);
				return (LRESULT)GetStockObject(BLACK_BRUSH);
			}
		}

The MessageBeep did play a beep, so I'm sure the return line after that did run.

But for some reason, the edit control's background color is white. I returned a handle to a black brush, so why did it turn out white? I replaced BLACK_BRUSH with GRAY_BRUSH and a few other values, but it still makes the background color white.

I tried including a SetBkColor(hdcStatic, RGB(0,0,0)); before the return and that made the background black, but I'm trying to understand why I can't use the return to get a black background.

Please reply, any help is greatly appreciated.

Thanks a lot, problem fixed. I added SetBkMode(hdcStatic, TRANSPARENT); before the return, and the background changed according to the return. Thanks again.