An application sends a CB_GETITEMDATA message to a combo box to retrieve the application-supplied value associated with the specified item in the combo box.
Syntax
To send this message, call the
SendMessage
function as follows.
lResult = SendMessage( // returns LRESULT in lResult
hWndControl, // (HWND) handle to destination control
CB_GETITEMDATA, // (UINT) message ID
wParam, // = () wParam;
lParam // = 0L; not used, must be zero
);
Parameters
- wParam
-
The zero-based index of the item.
- lParam
-
This parameter is not used.
Return Value
The return value is the value associated with the item. If an error occurs, it is CB_ERR.
If the item is in an owner-drawn combo box created without the CBS_HASSTRINGS style, the return value is the value contained in the
lParam parameter of the CB_ADDSTRING or CB_INSERTSTRING message, that added the item to the combo box. If the CBS_HASSTRINGS style was not used, the return value is the
lParam parameter contained in a CB_SETITEMDATA message.
Message Information
| Header | Declared in Winuser.h, include Windows.h |
|---|
| Minimum operating systems |
Windows 95, Windows NT 3.1 |
|---|
See Also