WM_CTLCOLORLISTBOX
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