There are two short answers.
1. The easiest if you have a good budget is to upgrade to CVI 7.1 and use the Tree control there. It's pretty easy to use.
2. If you're sticking with CVI 6.0, you can use the Microsoft TreeView ActiveX control. It takes more work to get it set up, but it works in 6.0. See the sample that ships with CVI: ...\CVI\samples\apps\fpeditor\fpeditor.prj. Look at all the function calls related to treeview and its nodes.
To add a treeview control to your project:
In the UI Editor, right-click on a blank spot where you want to add the tree.
Select ActiveX.
Scroll down and select Microsoft TreeViewControl, version 6.0.
Right-click on the new control and select Generate ActiveX Control Driver.
In the target .fp file box, add the absolute path to you project directory to the existing .fp file name.
Check the box to Add .fp file to project.
Click Next.
Click Advanced Options.
Click Check None.
Manually check ITreeView and ITreeViewEvents.
Click OK.
Click Next.
Now to use function panels for the ActiveX control, in a code window, goto Instrument >> Microsoft Windows Command Controls 6.0. Your best bet is to cut and paste from the fpeditor example.
