This message retrieves a count of the items in a header control. You can send this message explicitly or use the Header_GetItemCount macro.
At a Glance
| Header file: | Commctrl.h |
| Windows CE versions: | 1.0 and later |
| Related macro: | Header_GetItemCount |
Syntax
HDM_GETITEMCOUNT wParam = 0; lParam = 0;
Return Values
The number of items indicates success. -1 indicates failure.
See Also