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An application sends the SBM_ENABLE_ARROWS message to enable or disable one or both arrows of a scroll bar control.
Parameters
-
wParam
-
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_LTUP
Disables the left arrow on a horizontal scroll bar or the up arrow on a vertical scroll bar. - ESB_DISABLE_LEFT
Disables the left arrow on a horizontal scroll bar. - ESB_DISABLE_RTDN
Disables the right arrow on a horizontal scroll bar or the down arrow on 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. -
lParam
-
This parameter is not used.
Return value
If the message succeeds, the return value is TRUE; otherwise, it is FALSE.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2003 [desktop apps only] |
| Header |
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