The WM_DELETEITEM message is sent to the owner of a list box or combo box when the list box or combo box is destroyed or when items are removed by the LB_DELETESTRING, LB_RESETCONTENT, CB_DELETESTRING, or CB_RESETCONTENT message. Windows sends a WM_DELETEITEM message for each deleted item. Windows sends the WM_DELETEITEM message for any deleted list box or combo box item with nonzero item data.
WM_DELETEITEM
idCtl = wParam; // control identifier
lpdis = (LPDELETEITEMSTRUCT) lParam; // structure with item information
Parameters
idCtl
Value of wParam. Specifies the identifier of the control that sent the WM_DELETEITEM message.
lpdis
Value of lParam. Points to a DELETEITEMSTRUCT structure that contains information about the item deleted from a list box.
Return Values
An application should return TRUE if it processes this message.
See Also
CB_DELETESTRING, CB_RESETCONTENT, DELETEITEMSTRUCT, LB_DELETESTRING, LB_RESETCONTENT