CBN_DROPDOWN

3.0

The CBN_DROPDOWN notification message is sent when the list box of a combo box is about to be dropped down (made visible). The parent window of the combo box receives this notification message through a WM_COMMAND message.

Parameters

wParam

Specifies the identifier of the combo box.

lParam

Specifies the handle of the combo box in the low-order word, and specifies the CBN_DROPDOWN notification message in the high-order word.

Comments

This notification message can occur only for a combo box with the CBS_DROPDOWN or CBS_DROPDOWNLIST style.

See Also

CBN_CLOSEUP, WM_COMMAND