This notification message notifies a header control parent window the user has begun dragging a divider in the control; that is, the user has pressed the stylus to the touch screen over a divider in the header control. It is sent in the form of a WM_NOTIFY message.
At a Glance
| Header file: | Commctrl.h |
| Windows CE versions: | 1.0 and later |
Syntax
HDN_BEGINTRACK phdn = (HD_NOTIFY FAR *) lParam;
Parameters
phdn
Pointer to an NMHEADER structure that contains data about the header control and the item whose divider is dragged.
Return Values
TRUE prevents tracking. FALSE enables tracking of the divider.
See Also