[Gtk-sharp-list] Newbie's TreeView updates *very* slowly

Andy Selvig ajselvig at gmail.com
Wed Dec 24 15:43:17 EST 2008

Try calling QueueDraw() after the ShowAll() on the tree view. ShowAll() just
makes sure everything is visible, but Gtk will wait until the application is
idle before it redraws.

On Tue, Dec 23, 2008 at 3:32 PM, fourthirtysix <fourthirtysix at yahoo.com>wrote:

> Hello, I should first disclose that I'm a very novice programmer working on
> my first GUI app ever!
> I have an app using a TreeView/TreeStore to display a table with 8 columns
> and about 5 rows.
> The program loads with a blank window. I click on one button, and 3 of the
> 8
> columns are populated with data for all 5 rows.
> Next, I click a second button, and for each of the 5 rows, an intensive
> database routine is performed to get data to update the rest of the empty
> places in each row.
> I iterate through a list of the five rows, running the database search
> seperately for each one and using the TreeView Models SetValue function to
> update each row. I call treeview.ShowAll() for each iteration to do the
> refresh.
> My problem is: The treeview is supposed to update each time a result is
> found (5 times in total, one for each row). I do this to show the user that
> progress is being made. Unfortunately, both the data and that statusbar
> functions that I am calling wait until all of the intensive data searches
> are done before refreshing.
> Basically, it waits until everything is done, and then refreshes.  Is GTK
> just slow? is it Mono?  Is there a way to get the screen to refresh even
> though I'm running a heavy load operation between refreshes?
> help!
> thanks  :-D
> -mwp
> --
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