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WM_CTLCOLORLISTBOX Overview  Group

The WM_CTLCOLORLISTBOX message is sent to the parent window of a list box before Windows draws the list box. By responding to this message, the parent window can set the text and background colors of the list box by using the given display device context handle. 

WM_CTLCOLORLISTBOX 

hdcLB = (HDC) wParam;   // handle of list box display context 

hwndLB = (HWND) lParam; // handle of list box 

 

Parameters

hdcLB
Value of wParam. Identifies the device context for the list box.
hwndLB
Value of lParam. Identifies the list 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 list box.

Default Action

The DefWindowProc function selects the default system colors for the list box.

Remarks

The WM_CTLCOLORLISTBOX 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_CTLCOLORMSGBOX, WM_CTLCOLORSCROLLBAR, WM_CTLCOLORSTATIC 

 

file: /Techref/os/win/api/win32/mess/src/msg22_29.htm, 2KB, , updated: 2000/4/7 11:20, local time: 2025/1/20 09:00,
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