[Gambas-user] Runaway memory consumption not released until program exit

[Benoît Minisini]

> > Ooops, spoke too soon. The working project
> > compiles ok but breaks now where I test the presence of an object in a
> > collection. Looks like the place I get the collection key is not
> > initialising. It is a ComboBox which I fill in one splash with DIr(path,
> > pattern, gb.File). Must be a difference in qt and gtk combo boxes.
> > Shouldn't take too long to fix though.
> 
> Just for completeness....
> 
> The original combo box (gtk?) fires its change event when its List is set
> by a string array after all of the elements of the list have been properly
> put in place, counted and indexed. I can then use the change event to see
> if the now current list item has been seen before, and if not I add it and
> its associated object to a collection.
> 
> The qt combo box I am now using will also be quite happy to be initialised
> by a string array and it duly fires off its change event. This time,
> however, the count and index are not yet correct in the change event
> handler. They are of course correct by the time the event returns. My
> horrible kludge of a fix is to have a class boolean property called RE_RUN
> which I set false before I set up the combo box and then set to true
> afterwards.
> 
> I re-trigger the change event with a couple of harmless index number flips.
> (At worst this will add an extra object to the collection before it is
> needed, but I can live with that).
> 
> The combo change event has its event analysis code wrapped in an IF
> statement which tests the RE_RUN property to see if it should be executed.
> 
> There are other obvious glitches, like items hidden by overlaid widgets on
> the gtk form which are now plainly visible (and in the way) on the qt
> version, but that just means I was relying too much on the gui behaviour.
> I can fix it be being more explicit about what should be hidden and
> revealed.
> 
> Is there a reference somewhere to the differences of behaviour in Gambas
> which depend on the underlying gui toolkit?
> 
> Time for bed now...
> 
> Richard
> 

The combo box behaviour should have been cleaned up in Gambas 3. Anyway, don't 
use the change event while setting the List property. You can't be sure that 
Qt and GTK+ behave the same when filling the list.

Regards,

-- 
Benoît Minisini