LB_SETTOPINDEX

An application sends an LB_SETTOPINDEX message to ensure that a particular item in a list box is visible.

LB_SETTOPINDEX 
wParam = (WPARAM) index;    // item index 
lParam = 0;                 // not used; must be zero 
 

Parameters

index

Value of wParam. Specifies the zero-based index of the item in the list box.

Windows 95 and Windows 98: 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.

Return Values

If an error occurs, the return value is LB_ERR.

Remarks

The system scrolls the list box contents so that either the specified item appears at the top of the list box or the maximum scroll range has been reached.

QuickInfo

  Windows NT: Requires version 3.1 or later.
  Windows: Requires Windows 95 or later.
  Windows CE: Requires version 1.0 or later.
  Header: Declared in winuser.h.

See Also

List Boxes Overview, List Box Messages, LB_GETTOPINDEX