CB_GETHORIZONTALEXTENT
An
application sends the CB_GETHORIZONTALEXTENT message to retrieve from a combo
box the width, in pixels, by which the list box can be scrolled horizontally
(the scrollable width). This is applicable only if the list box has a
horizontal scroll bar.
CB_GETHORIZONTALEXTENT
wParam = 0;
// not used, must be zero
lParam = 0;
// not used, must be zero
Parameters
This message
has no parameters.
Return Values
The return
value is the scrollable width, in pixels.
See Also