Selects a string and scrolls it into view, if necessary. When the new string is selected, the list box removes the highlight from the previously selected string.



Specifies the zero-based index of the string that is selected. If this parameter is -1, the list box is set to have no selection.

Windows 95/Windows 98/Windows Millennium Edition (Windows Me) : The wParam parameter is limited to 16-bit values. This means list boxes cannot contain more than 32,767 items. Although the number of items is restricted, the total size in bytes of the items in a list box is limited only by available memory.


This parameter is not used.

Return value

If an error occurs, the return value is LB_ERR. If the wParam parameter is -1, the return value is LB_ERR even though no error occurred.


Use this message only with single-selection list boxes. You cannot use it to set or remove a selection in a multiple-selection list box.


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

See also