treeview in visio

[david]

i want to add a treeview to visio.
i clicked the insert control button on the developer toolbar and chose "Microsoft Treeview Control, version 6.0".
how can i learn more about this specific control?  i want to know how to add a shape to the treeview whenever i move a shape from the stencil to the frame.  or to move a shape to a group in the treeview.  i'd really like to read good material about this control because i couldn't find at google.  anyone can recommend me where to look?  i know nothing about treeview for now.  in fact i'm not even sure i chose the right control.  there's also "Microsoft TreeView Control, version 5.0 (SP2)" and i don't know the difference between version 6.0 and version 5.0 and which one of them i should use.

i'd really appreciate your answer.

thanks
David

[david]

nobody knows???

David

[wapperdude]

I do very little programming, but here's what I've been able to discover.  It seems as though TreeView requires some Visual Basic support either Visual Basic.Net or Visual Basic 6 are the most likely approaches.  It doesn't seem like you can just plop the Control down as simply as with a shape.  There is more supplemental work required.   

You might try the following link as a starting point:  http://msdn.microsoft.com/en-us/library/ms747277.aspx. 

A general search link is:  http://search.msdn.microsoft.com/Default.aspx?query=treeview&brand=msdn&locale=en-us&refinement=

I believe the Visio 2007 SDK may have an example file regarding TreeView:  http://www.microsoft.com/downloads/details.aspx?FamilyId=373D34B8-5EF7-4E6E-A582-C8D6B5EE4E33&displaylang=en   

I have a reference text at home on Visual Basic.Net if your interested.  It has a chapters on both TreeView and ListView, but it is not targetted for Visio.   

[Visio Guy]

Hi David,

You're kind of crossing worlds if you are trying to drag a shape into a TreeView control. You'll have to implement some drag and drop code to do this. There are plenty of examples on the web. Kind of neat problem, now that I think about it.

Besides people sometimes just not seeing a question, another reason you might not have gotten a response is this: the answer would be as long as a book. The question is too general and people are busy

As far as what version of a control to use, you might as well go with the newest!

From some quick tests, it looks like you'll need to set OLEDropMode = ccOLEDropManual. Then you'll have an event that can be handled on drop:

Code Select Expand

Private Sub TreeView1_OLEDragDrop(Data As MSComctlLib.DataObject, _
                                  Effect As Long, Button As Integer, _
                                  Shift As Integer, _
                                  x As Single, _
                                  y As Single)
 
  Debug.Print "Something was just dropped on the tree"
 
End Sub

You should somehow be able to get the Visio data from the Data argument, but I played with it for 15 minutes and couldn't find/remember how to get the Visio-specific data about what was dropped. There are Data.GetData and Data.GetFormat functions to do this, I just don't have time to work it out.

[david]

thanks for your answer.
i'm sorry i didn't reply for a long time.  it was my exams period.  now it's over and i'm back to work on visio.
i really didn't mean that the answer will be as long as a book.  i just wanted a link or any reference that can help me study all the relevant functions/events of the treeview control.

wapperdude, thanks for the links but unfortunatelly they weren't very helpful.  all i could see was xml examples but i can use xml only for specific nodes (with specific names).  but i don't know ahead which forms the user will drag to the frame so i don't see how writing xml files will help me.  it should be written somewhere in the events code.

visio guy, the event you gave me (TreeView1_OLEDragDrop) was the same event i already tried before but i also couldn't do anything with it.  it really seems to be the event i should work with but unfortunatelly i have no idea how to work with that event and what to do with its paremeters.  i tried just to see what happens to write msgbox("hi") in that event but nothing happened when i dragged a form to the shape.  so i even don't know what exactly i should drag and drop in this event.

i'm not expecting for a long answer, just a link or even a book if needed that explains all the events of the treeview so i'll be able to start working on it.  i'll appreciate any help.

thanks in advance
David

[david]

btw, visio guy
i didn't understand what the code OLEDropMode = ccOLEDropManual means and where i should write it.