CBEN_GETDISPINFO


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CBEN_GETDISPINFO
CBEN_GETDISPINFO
    pDispInfo = (PNMCOMBOBOXEX) lParam;
Sent to retrieve display information about a callback item. This notification is sent in the form of a WM_NOTIFY message.
The application processing this notification must return zero.

pDispInfo
Address of an NMCOMBOBOXEX structure that contains information about the notification.

The NMCOMBOBOXEX structure contains a COMBOBOXEXITEM structure. The mask member specifies the information being requested by the control.
Fill the appropriate members of the structure to return the requested information to the control. If your message handler sets the mask member of the COMBOBOXEXITEM structure to CBEIF_DI_SETITEM, the header control stores the information and will not request it again.

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