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CBN_DROPDOWN Overview  Group


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

CBN_DROPDOWN 

idComboBox = (int) LOWORD(wParam);  // identifier of combo box 

hwndComboBox = (HWND) lParam;       // handle of combo box 

 

Remarks

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

See Also

CBN_CLOSEUP, WM_COMMAND

See also:

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