LB_SETANCHORINDEX  0LN47B 

An application sends an LB_SETANCHORINDEX message to set the anchor item that is, the item from which a multiple selection starts. A multiple selection spans all items from the anchor item to the caret item.

LB_SETANCHORINDEX

wParam = (WPARAM) index; // index to set as anchor

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

Parameters

index

Value of wParam. Specifies the index of the new anchor item.

Windows 95: 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 listbox is limited only by available memory.

Return Values

If the message succeeds, the return value is zero.

If the message fails, the return value is LB_ERR.

See Also