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
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.
If an error occurs, the return value is LB_ERR.
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.
file: /Techref/os/win/api/win32/mess/src/msg11_9.htm, 1KB, , updated: 2008/1/8 10:31, local time: 2024/9/5 12:32,
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