using a treeview

Hello,

I want too use a treeview in my userform.

In my program I connect too a OPC server the OPC server contains different channels, those channels contains devices and the devices contain items, those items could be a collection of items or individual items.

I have already used a listbox and listview in my userform, but i'm not particulary happy with the results. So i want too add the treeview because i think it would look and work better.

I'll add all of my code and i hope you can see what i mean. I have found some examples but they use data on a worksheet which is a bit different too how i want too do it. I have found out the .add that is used there doesn't work and i'm having trouble finding what i need. for some reason opening the help files is blocked on win xp.

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I know it's a bit much, but i'd rather added too much code then you guys need too ask that i add some pieces.

I hope you can help me it would be appreciated.

greetings Dadio25

Well in that example you use a .add too add something too the tree. But in my program i don't use the worksheet too get data from. so that .add doesn't work for my program.

But I also don't know how many nodes I need too add so that's a bit of a problem there also.

In the code i gave you I removed how I tried it because it didn't work. But I found that if i use the add from nodes it should work. so i'm trying too do that at the moment.

Nobody can help me then?

I'm just wondering how i would be able too use the treeview. The hierarchy of what i want too show is very much like a filedirectory.

I have that server. Which could have several channels so i need too count those first. A channel could have one device or more need too count that again. A device could have several items so that needs too be count again. but those items could be the end or an item could have several items of his own. So need too count that again.

I believe I have the functions found too count it, but they give their answer as a long.

How do I make from what I above described a usuable treeview? I need too work with arrays that is obvious. and they need too be made and filled first.

But do I need too make an array for each channel with devices. then an array for each of those devices with items and then possibly and array for an item of they have several items underneath themselves.

greetings dadio25

Hmmm I understand your dilemma,

I am using an dll called opcdaauto which is a specification from the opcfoundation. It specifies a way too connect too an opc server.

I have one listbox that is working fully bit it gets populated by using the opcmybrowser.

And the population is part of the problem. The problem is i don't really understand how those nodes work and how too populate them. Since most examples use a tree that has a fixed number of nodes already made. But that isn't possible for me. I first need tooo find out how many nodes i need and then i need too think about how too populate them. How do you recommend I do that?

Hmmm,

I'm trying too add the first nodes. I add the very first node using

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in which OPC serverstring is the name of the server.

Then i want too add the other nodes and I use

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I use the for loop too browse via the opcmybrowser for each name (vName) that gets found then i add those too a listbox and then i want too add them too the treeview, but it doesn't try too add something it just stops their.

So I know I made an error, but i'm wondering what exactly i did wrong. I use the variable vName as a variant.

Hello, I tried too use that and it doesn't give an error, but it doesn't show anything.

It just keeps showing the the first node I made and not what I try too add

I know but after a while you just can't see the problem anymore sigh

but thanks for the help until now

greetings