This message is sent by an application to retrieve the zero-based index of the first visible item in the list box portion of a combo box. Initially the item with index zero is at the top of the list box, but if the list box contents have been scrolled, another item may be at the top.
At a Glance
| Header file: | Winuser.h |
| Windows CE versions: | 1.0 and later |
Syntax
CB_GETTOPINDEX wParam = 0; lParam = 0;
Return Values
The index of the first visible item in the list box of the combo box indicates success. CB_ERR indicates failure.
See Also