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EnableScrollBar info  Overview  Group

The EnableScrollBar function enables or disables one or both scroll bar arrows.

BOOL EnableScrollBar(

    HWND hWnd,

// handle to window or scroll bar

    UINT wSBflags,

// scroll bar type flag

    UINT wArrows 

// scroll bar arrow flag

   );

Parameters

hWnd
Identifies a window or a scroll bar control, depending on the value of the wSBflags parameter.
wSBflags
Specifies the scroll bar type. This parameter can be one of the following values:

Value

Meaning

SB_BOTH

Enables or disables the arrows on the horizontal and vertical scroll bars associated with the specified window. The hWnd parameter must be the handle to the window.

SB_CTL

Identifies the scroll bar as a scroll bar control. The hWnd parameter must be the handle to the scroll bar control.

SB_HORZ

Enables or disables the arrows on the horizontal scroll bar associated with the specified window. The hWnd parameter must be the handle to the window.

SB_VERT

Enables or disables the arrows on the vertical scroll bar associated with the specified window. The hWnd parameter must be the handle to the window.

wArrows
Specifies whether the scroll bar arrows are enabled or disabled and indicates which arrows are enabled or disabled. This parameter can be one of the following values:

Value

Meaning

ESB_DISABLE_BOTH

Disables both arrows on a scroll bar.

ESB_DISABLE_DOWN

Disables the down arrow on a vertical scroll bar.

ESB_DISABLE_LEFT

Disables the left arrow on a horizontal scroll bar.

ESB_DISABLE_LTUP

Disables the left arrow on a horizontal scroll bar or the up arrow of a vertical scroll bar.

ESB_DISABLE_RIGHT

Disables the right arrow on a horizontal scroll bar.

ESB_DISABLE_RTDN

Disables the right arrow on a horizontal scroll bar or the down arrow of a vertical scroll bar.

ESB_DISABLE_UP

Disables the up arrow on a vertical scroll bar.

ESB_ENABLE_BOTH

Enables both arrows on a scroll bar.

Return Values

If the arrows are enabled or disabled as specified, the return value is nonzero.

If the arrows are already in the requested state or an error occurs, the return value is zero. To get extended error information, call GetLastError.

See Also

ShowScrollBar 

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