Re: Signaling TreeView to update

["Jonathon Jongsma" <jonathon jongsma gmail com>]

On 7/25/07, Joaquim Schmidlap <schmidlap schmidlap org> wrote:
> I'm writing an app using TreeModel / TreeView to show something like a
> spreadsheet of real-time stock market data. The data is coming in
> asynchronously on a background thread (previously created by ACE).
>
> In my market data callback, I write the data into the TreeModel using the []
> operator:
>
>    m_row[m_columns.price] = price;
>
> That works fine. The problem is that the TreeView does not seem to render
> the new value until I do something to "wake up" the GUI, like mouse over the
> window, etc.
>
> As I understand it, I have one of two problems:
>
> 1) Writing into the TreeModel does not trigger the TreeView to refresh
> automatically, so the view must be forced via a manual "repaint" method of
> some kind that I haven't found yet,

I don't believe this is your problem.  the treeview listens for the
'row-changed' signal of your model and will queue a redraw
automatically when the underlying model is changed.  So my guess is
that you're having problems with threading.

The other possibility I can think of is that you're using a custom
treemodel and the row-changed signal isn't being emitted properly...

--
jonner