Re: Signaling TreeView to update

[Robert Caryl <bob fis-cal com>]

Just a wild guess here, but I'd say that your callback will be called anytime anything at all happens that would require rendering of the cell to which you linked it.  I have looked, but I have not found a list of the events that would trigger the callback.

Bob Caryl

Joaquim Schmidlap wrote:

On Wed, Jul 25, 2007 at 10:57:54AM -0500, Robert Caryl wrote:
  

Use a dispatcher in your GUI window that will call Gtk::Widget::queue_draw for
your Gtk::TreeView whenever your thread updates the Gtk::TreeModel displayed by
your Gtk::TreeView.
    

This worked, thank you. I'm still a bit confused why the Gtk event loop didn't
just wake up on its own, but I'll accept this and move on.

Follow up: I have set up a callback for custom rendering based on
the values in the cells using set_cell_data_func, and I'm seeing many more
callbacks than I would expect. At a minimum, it appears the callback for a
given cell is triggered three times for each write into the model for that
cell, and then once more for every cell in the view when the
TreeModel::queue_draw executes. Finally, it appears that other input events
such as mousing over the cells can cause a callback.

Is this expected, or am I doing something else wrong? Are the events that
should trigger this callback enumerated somewhere?

Thanks very much for the help.