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
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.
The DefWindowProc function selects the default system colors for the list box.
The WM_CTLCOLORLISTBOX message is never sent between threads. It is sent only within one thread.
DefWindowProc, RealizePalette, SelectPalette, WM_CTLCOLORBTN, WM_CTLCOLORDLG, WM_CTLCOLOREDIT, WM_CTLCOLORMSGBOX, WM_CTLCOLORSCROLLBAR, WM_CTLCOLORSTATIC
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