TVN_BEGINDRAG  612HHKU 

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_NOTIFY1MZT7BR message. 

TVN_BEGINDRAG

pnmtv = (NM_TREEVIEW FAR *) lParam

Parameters

pnmtv

Pointer to an NM_TREEVIEW53II_3V structure. The itemNew member is a TV_ITEM2IHAQ35 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