NMTRBTHUMBPOSCHANGING structure (commctrl.h)

Contains information about a trackbar change notification. This message is sent with the TRBN_THUMBPOSCHANGING notification.

Syntax

typedef struct tagTRBTHUMBPOSCHANGING {
  NMHDR hdr;
  DWORD dwPos;
  int   nReason;
} NMTRBTHUMBPOSCHANGING;

Members

hdr

Type: NMHDR

A NMHDR structure that describes the notification.

dwPos

Type: DWORD

Position on trackbar.

nReason

Type: int

Type of movement as one of the following values: TB_LINEUP, TB_LINEDOWN, TB_PAGEUP, TB_PAGEDOWN, TB_THUMBPOSITION, TB_THUMBTRACK, TB_TOP, TB_BOTTOM, or TB_ENDTRACK.

Requirements