CBN_DROPDOWN

This 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); 
hwndComboBox = (HWND) lParam;

Parameters

  • idComboBox
    Identifier of the combo box.
  • hwndComboBox
    Handle to the combo box.

Remarks

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

Requirements

Runs On Versions Defined in Include Link to
Windows CE OS 1.0 and later Winuser.h    

Note   This API is part of the complete Windows CE OS package as provided by Microsoft. The functionality of a particular platform is determined by the original equipment manufacturer (OEM) and some devices may not support this API.

See Also

CBN_CLOSEUP, WM_COMMAND

 Last updated on Tuesday, July 13, 2004

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