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ShowScrollBar function (winuser.h)
The ShowScrollBar function shows or hides the specified scroll bar.
Syntax
BOOL ShowScrollBar(
[in] HWND hWnd,
[in] int wBar,
[in] BOOL bShow
);
Parameters
[in] hWnd
Type: HWND
Handle to a scroll bar control or a window with a standard scroll bar, depending on the value of the wBar parameter.
[in] wBar
Type: int
Specifies the scroll bar(s) to be shown or hidden. This parameter can be one of the following values.
| Value | Meaning |
|---|---|
|
Shows or hides a window's standard horizontal and vertical scroll bars. |
|
Shows or hides a scroll bar control. The hwnd parameter must be the handle to the scroll bar control. |
|
Shows or hides a window's standard horizontal scroll bars. |
|
Shows or hides a window's standard vertical scroll bar. |
[in] bShow
Type: BOOL
Specifies whether the scroll bar is shown or hidden. If this parameter is TRUE, the scroll bar is shown; otherwise, it is hidden.
Return value
Type: BOOL
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
Remarks
You should not call this function to hide a scroll bar while processing a scroll bar message.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | winuser.h (include Windows.h) |
| Library | User32.lib |
| DLL | User32.dll |
| API set | ext-ms-win-ntuser-misc-l1-2-0 (introduced in Windows 8.1) |
See also
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