class MyReadOnlyTreeModel : public QAbstractItemModel

[Yong]

Sorry, I think I have described the problem wrongly again. The problem is not in thread
synchronization. Let's assume there is one thread only.

You can take a look at the code attached, and here is what I would like to understand:

1) After add-new-tree-item or update-an-existing-item in the internal tree, what to emit for
the corresponding item to let the views know that info about that item has changed.

2) I have tried many implementations for the model, and hardly can get it right.
I suspect something is wrong there.

3) The initial idea was to have a read-only model so that view can't modify it.
but samples I found on read-only are populating data in the beginning only, not run time.

4) any blaming to what I have posted, are welcome

thanks