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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_CTLCOLORSCROLLBAR
The WM_CTLCOLORSCROLLBAR message is sent to the parent window of a scroll bar
control when the control is about to be drawn. By responding to this message,
the parent window can use the given display context handle to set the background
color of the scroll bar control.
WM_CTLCOLORSCROLLBAR
hdcSB = (HDC) wParam; // handle of scroll-bar display context
hwndSB = (HWND) lParam; // handle of scroll bar
Parameters
hdcSB
Value of
wParam. Identifies the device context for the scroll bar control.
hwndSB
Value of
lParam. Identifies the scroll bar.
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 scroll bar control.
Default Action
The
DefWindowProc function selects the default system colors for the scroll bar control.
Remarks
The WM_CTLCOLORSCROLLBAR message is never sent between threads; it is only
sent within the same thread.
See Also
DefWindowProc,
RealizePalette,
SelectPalette,
WM_CTLCOLORBTN,
WM_CTLCOLORDLG,
WM_CTLCOLOREDIT,
WM_CTLCOLORLISTBOX,
WM_CTLCOLORMSGBOX,
WM_CTLCOLORSTATIC
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