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LB_SETITEMDATA Overview  Group

An application sends an LB_SETITEMDATA message to set a 32-bit value associated with the specified item in a list box.

LB_SETITEMDATA 

wParam = (WPARAM) index;    // item index 

lParam = (LPARAM) dwData;   // value to associate with item 

 

Parameters

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

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.

dwData
Value of lParam. Specifies the 32-bit value to be associated with the item.

Return Values

If an error occurs, the return value is LB_ERR.

Remarks

If the item is in an owner-drawn list box created without the LBS_HASSTRINGS style, this message replaces the 32-bit value contained in the lParam parameter of the LB_ADDSTRING or LB_INSERTSTRING message that added the item to the list box.

See Also

LB_ADDSTRING, LB_GETITEMDATA, LB_INSERTSTRING 


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