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LB_SETHORIZONTALEXTENT Overview  Group

An application sends an LB_SETHORIZONTALEXTENT message to set the width, in pixels, by which a list box can be scrolled horizontally (the scrollable width). If the width of the list box is smaller than this value, the horizontal scroll bar horizontally scrolls items in the list box. If the width of the list box is equal to or greater than this value, the horizontal scroll bar is hidden.

LB_SETHORIZONTALEXTENT 

wParam = (WPARAM) cxExtent; // horizontal scroll width 

lParam = 0;                 // not used; must be zero 

 

Parameters

cxExtent
Value of wParam. Specifies the number of pixels by which the list box can be scrolled.

Windows 95: The wParam parameter is limited to 16-bit values.

Return Values

This message does not return a value.

Remarks

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

See Also

LB_GETHORIZONTALEXTENT 


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