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ShowScrollBar function

The ShowScrollBar function shows or hides the specified scroll bar.

Syntax


BOOL ShowScrollBar(
  _In_  HWND hWnd,
  _In_  int wBar,
  _In_  BOOL bShow
);

Parameters

hWnd [in]

Type: HWND

Handle to a scroll bar control or a window with a standard scroll bar, depending on the value of the wBar parameter.

wBar [in]

Type: int

Specifies the scroll bar(s) to be shown or hidden. This parameter can be one of the following values.

ValueMeaning
SB_BOTH

Shows or hides a window's standard horizontal and vertical scroll bars.

SB_CTL

Shows or hides a scroll bar control. The hwnd parameter must be the handle to the scroll bar control.

SB_HORZ

Shows or hides a window's standard horizontal scroll bars.

SB_VERT

Shows or hides a window's standard vertical scroll bar.

 

bShow [in]

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

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Winuser.h (include Windows.h)

Library

User32.lib

DLL

User32.dll

See also

EnableScrollBar

 

 

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