Using TreeWidgets

Arukas

Hello-

I'm use to using listView and having trouble with treeWidgets. Is there a way to get the TreeWidget to give you a simple index number like the listView does?

-Thanks

goetz

Being a hierarchical view, no, there is no such concept as an index here. I wouldn't make sense at all.

Which API call do you refer when talking about "a simple index number"? Maybe there's something similar in the tree view...

Arukas

I can get row numbers from the tree, but that's doesn't really work because they start over when they go into a subtree. So how are you suppose to be able to tell which item is clicked on in these trees if their names aren't unique?

goetz

The [[Doc:QTreeWidget]] signals contain a QTreeWidgetItem pointer, you can work on that. Isn't that sufficient?

Arukas

Well, if I knew more about the QTreeWidgetItem, it might but as far as I can tell it only holds the a name, but my names are unique, so that causes a problem. How would I tell if I had the write pointer?

andre

If you think it helps you, you could use a custom data role on your items and generate a unique ID number that you store in that role. You can then retreive that ID from the item when it is clicked. Reference the setData and data methods in QTreeWidgetItem.

goetz

Sorry, I don't get the use case. What do you need that index for other than poking the correct item out of the view?

Arukas

I just want to get the correct item out of the tree. Is the only way to use a

@map<QTreeWidgetItem, int>@

or does the treewidget do something like that already for you?

goetz

If you take the QTreeWidget pointer delivered by the signals, you already HAVE the correct item.

andre

[quote author="Arukas" date="1328130428"]I just want to get the correct item out of the tree. Is the only way to use a

@map<QTreeWidgetItem, int>@

or does the treewidget do something like that already for you?

[/quote]

I posted a solution for that just above...