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TVN_BEGINDRAG Overview  Group

The TVN_BEGINDRAG notification message notifies a tree-view control’s parent window that a drag-and-drop operation involving the left mouse button is being initiated. This notification message is sent in the form of a WM_NOTIFY message. 

TVN_BEGINDRAG 

pnmtv = (NM_TREEVIEW FAR *) lParam 

 

Parameters

pnmtv
Pointer to an NM_TREEVIEW structure. The itemNew member is a TV_ITEM structure that contains valid information about the item being dragged in the hItem, state, and lParam members. The ptDrag member specifies the current screen coordinates of the mouse.

Return Values

No return value.

Remarks

A tree-view control that has the TVS_DISABLEDRAGDROP style does not send this notification message.

See Also

NM_TREEVIEW, TV_ITEM, WM_NOTIFY 

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