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CB_GETITEMDATA Overview  Group

An application sends a CB_GETITEMDATA message to a combo box to retrieve the application-supplied 32-bit value associated with the specified item in the combo box.


wParam = (WPARAM) index;  // item index 

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



Value of wParam. Specifies the zero-based index of the item.

Return Values

The return value is the 32-bit 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 32-bit 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.

See Also


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