The NM_UPDOWN structure contains information about an up-down control notification message.
typedef struct _NM_UPDOWN { nmud
NMHDR hdr; // notification message header
int iPos; // current position
int iDelta; // proposed change in position
} NM_UPDOWNW;
Members
hdr
Specifies an NMHDR structure. The code member of the NMHDR structure can be the following notification code that identifies the message being sent: UDN_DELTAPOS.
iPos
Signed integer value that is the current position of the up-down control.
iDelta
Signed integer value that is the proposed change in the position of the up-down control.
Remarks
The address of this structure is specified as the lParam parameter of the WM_NOTIFY message for the UDN_DELTAPOS notification message.
See Also