An application sends a CB_RESETCONTENT message to remove all items from the list box and edit control of a combo box.
CB_RESETCONTENT wParam = 0; // not used; must be zero lParam = 0; // not used; must be zero
This message has no parameters.
This message always returns CB_OKAY.
If you create the combo box with an owner-drawn style but without the CBS_HASSTRINGS style, the owner of the combo box receives a WM_DELETEITEM message for each item in the combo box.
CB_DELETESTRING, WM_DELETEITEM
file: /Techref/os/win/api/win32/mess/src/msg02_2.htm, 1KB, , updated: 2000/4/7 12:19, local time: 2024/8/24 17:45,
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