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CBEN_BEGINEDIT

CBEN_BEGINEDIT
    lpnmhdr = (LPNMHDR) lParam;

Sent when the user activates the drop-down list or clicks in the control's edit box. This notification is sent in the form of a WM_NOTIFY message.

• The application processing this notification must return zero.

lpnmhdr

Address of an NMHDR structure that contains information about the notification.

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