HDN_TRACK notification code

Notifies a header control's parent window that the user is dragging a divider in the header control. This notification code is sent in the form of a WM_NOTIFY message.


HDN_TRACK

    pNMHeader = (LPNMHEADER) lParam; 

Parameters

lParam

A pointer to an NMHEADER structure that contains information about the header control and the item whose divider is being dragged.

Return value

Returns FALSE to continue tracking the divider, or TRUE to end tracking.

Requirements

Minimum supported client

Windows 2000 Professional [desktop apps only]

Minimum supported server

Windows 2000 Server [desktop apps only]

Header

Commctrl.h

Unicode and ANSI names

HDN_TRACKW (Unicode) and HDN_TRACKA (ANSI)

 

 

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