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Overview |
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Group |
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Quick Info
Windows NT
| Yes
| Win95
| Yes
| Win32s
| Yes
| Import Library
| -
| Header File
| commctrl.h
| Unicode
| WinNT
| Platform Notes
| None
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HDN_BEGINTRACK
The HDN_BEGINTRACK notification message notifies a header control's parent
window that the user has begun dragging a divider in the control (that is, the
user has pressed the left mouse button while the mouse cursor is on a divider in
the header control). This notification message is sent in the form of a
WM_NOTIFY message.
HDN_BEGINTRACK
phdn = (HD_NOTIFY FAR *) lParam;
Parameters
phdn
Pointer to an HD_NOTIFY structure that contains information about the header control and the item
whose divider is to be dragged.
Return Values
Returns FALSE to allow tracking of the divider or TRUE to prevent tracking.
See Also
HD_NOTIFY, WM_NOTIFY
Related Links
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Unix Manual Pages
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