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Gets the width, in pixels, that a list box can be scrolled horizontally (the scrollable width) if the list box has a horizontal scroll bar.
Parameters
-
wParam
-
Not used; must be zero.
-
lParam
-
Not used; must be zero.
Return value
The return value is the scrollable width, in pixels, of the list box.
Remarks
To respond to the LB_GETHORIZONTALEXTENT message, the list box must have been defined with the WS_HSCROLL style.
If the application does not set the horizontal extent of the list box (using LB_SETHORIZONTALEXTENT), the default horizontal extent is zero. Note that the list box does not update its horizontal extent dynamically.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2003 [desktop apps only] |
| Header |
|