CBN_DROPDOWN
A version of this page is also available for
4/8/2010
This 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 message through the WM_COMMAND message.
Syntax
CBN_DROPDOWN idComboBox = (int)LOWORD(wParam);
hwndComboBox = (HWND) lParam;
Parameters
- idComboBox
Identifier of the combo box.
- hwndComboBox
Handle to the combo box.
Return Value
None.
Remarks
This message can occur only for a combo box with the CBS_DROPDOWN or CBS_DROPDOWNLIST style.
Requirements
| Header | winuser.h |
| Windows Embedded CE | Windows CE 1.0 and later |
| Windows Mobile | Windows Mobile Version 5.0 and later |