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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| -
| Header File
| winuser.h
| Unicode
| No
| Platform Notes
| None
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WM_CTLCOLORMSGBOX
The WM_CTLCOLORMSGBOX message is sent to the owner window of a message box
before Windows draws the message box. By responding to this message, the owner
window can set the text and background colors of the message box by using the
given display device context handle.
WM_CTLCOLORMSGBOX
hdcMB = (HDC) wParam; // handle of message box display context
hwndMB = (HWND) lParam; // handle of message box
Parameters
hdcMB
Value of
wParam. Identifies the device context for the message box.
hwndMB
Value of
lParam. Identifies the message box.
Return Values
If an application processes this message, it must return the handle of a
brush. Windows uses the brush to paint the background of the message box.
Default Action
The
DefWindowProc function selects the default system colors for the message box.
Remarks
The WM_CTLCOLORMSGBOX message is never sent between threads. It is sent only
within one thread.
See Also
DefWindowProc,
RealizePalette,
SelectPalette,
WM_CTLCOLORBTN,
WM_CTLCOLORDLG,
WM_CTLCOLOREDIT,
WM_CTLCOLORLISTBOX,
WM_CTLCOLORSCROLLBAR,
WM_CTLCOLORSTATIC
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