VB/WinAPI, Treeview Drag 'n' Drop

Treeview Drag 'n' Drop

Author	Message
Lucy Aldridg #1 / 5	Treeview Drag 'n' Drop I have a treeview control, with a certain (large) number of nodes which automatically produces a vertical scroll bar. I have implemented drag and drop, but I would like to scroll the treeview up or down while dragging, in order to be able to drag a node to one not already visible. Can anyone tell me how I would do this? Would a SendMessage mousedown api call do this? Many thanks in advance, Lucy Aldridge
Mon, 21 Jan 2002 03:00:00 GMT

Simon Water #2 / 5	Treeview Drag 'n' Drop Yes, your are correct that a message would enable you to do this. The message you want is WM_VSCROLL, qualified by the distance and direction to move (line or page, up or down). SendMessage TreeView1.hWnd, WM_VSCROLL, SB_LINEDOWN, 0 The declare and constants are available in the API viewer -- Simon Waters Director, Technical Services Looking Glass Solutions Limited Temple House, Regatta Place Marlow Road, Bourne End Bucks SL8 5TD England Tel: +44 (0)1628 530015 Fax: +44 (0)1628 530120 Quote: > I have a treeview control, with a certain (large) number of nodes which > automatically produces a vertical scroll bar. I have implemented drag and > drop, but I would like to scroll the treeview up or down while dragging, in > order to be able to drag a node to one not already visible. Can anyone tell > me how I would do this? Would a SendMessage mousedown api call do this? > Many thanks in advance, > Lucy Aldridge
Mon, 21 Jan 2002 03:00:00 GMT

Lucy Aldridg #3 / 5	Treeview Drag 'n' Drop That's great - thanks Simon Kind regards, Lucy
Mon, 21 Jan 2002 03:00:00 GMT

Erick Jense #4 / 5	Treeview Drag 'n' Drop This link will tell you exactly how to do it. http://support.microsoft.com/support/kb/articles/q177/7/43.asp -Erick Jensen Quote: > I have a treeview control, with a certain (large) number of nodes which > automatically produces a vertical scroll bar. I have implemented drag and > drop, but I would like to scroll the treeview up or down while dragging, in > order to be able to drag a node to one not already visible. Can anyone tell > me how I would do this? Would a SendMessage mousedown api call do this? > Many thanks in advance, > Lucy Aldridge
Mon, 21 Jan 2002 03:00:00 GMT

Lucy Aldridg #5 / 5	Treeview Drag 'n' Drop That's excellent - thanks both of you, it works well! Kind regards, Lucy
Tue, 22 Jan 2002 03:00:00 GMT

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