LB_GETHORIZONTALEXTENT

Version 3.0

This message retrieves from a list box the width in pixels by which the list box can be scrolled horizontally if the list box has horizontal scroll bars.

Return Value

The return value is the scrollable width of the list box, in pixels.

Comments

To respond to the LB_GETHORIZONTALEXTENT message, the list box must have been defined with the WS_HSCROLL style.