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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
| user32.lib
| Header File
| winuser.h
| Unicode
| No
| Platform Notes
| None
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EnableScrollBar
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
| );
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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.
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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.
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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.
See Also
ShowScrollBar
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