EnableScrollBar

Overview

Group

Quick Info

Windows NT
Yes
Win95
Yes
Win32s
Yes
Import Library
user32.lib
Header File
winuser.h
Unicode
No
Platform Notes
None

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.