I have a question regarding models, QTreeWidgets and XML

[Xagen]

Hi, guys!
I'm writing a book-collection manager now in QT4. And I have a question:
should I use a custom (QAbstractItemModel...) model in my app when I read/save data in xml file to/from my QTreeWidget?

Thanks in advance!

[jacek]

Yes, but you will have to use QTreeView instead of QTreeWidget.

[Xagen]

But why, I don't understand?

And another question in advance - how to read the data from the xml file to the model?

[jacek]

But why, I don't understand?

Because QTreeWidget has its own predefined model that uses QTreeWidgetItems.

And another question in advance - how to read the data from the xml file to the model?

http://www.qtcentre.org/forum/showthread.php?t=1297

[Xagen]

Because QTreeWidget has its own predefined model that uses QTreeWidgetItems.


http://www.qtcentre.org/forum/showthread.php?t=1297

I understood this.
I was asking why to use model?
What are the pluses of using model?

[jacek]

You can share it between multiple views and it can implement an interface that is more useful for you than operating on QTreeWidgetItems.

[Xagen]

Aha.
Thanks.