SBM_ENABLE_ARROWS message

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

Minimum supported client
Windows Vista [desktop apps only]
Minimum supported server
Windows Server 2003 [desktop apps only]
Header
Winuser.h (include Windows.h)