On Wed, 13 Jul 2005 08:33:21 -0400 (EDT)
>Date: Wed, 13 Jul 2005 17:47:38 +1200
>From: Grant McLean <[EMAIL PROTECTED]>
>Subject: Re: a couple of Gnome2::Canvas problems
>To: "[email protected]" <[email protected]>
>I tried your script and got the same errors. It piqued my interest
>because the error seem to occur even when all calls to update meter are
>removed. If I put a die in the update_meter routine, it was never
>reached and yet commenting out the $needle->set and $text->set made the
>errors go away. Very odd.
>
>I was testing on Debian Sarge and a colleague tested on Debian unstable.
>He did not get the errors. I'm assuming that the libraries are
>different versions.
>
>Anyway, I was able to make the errors go away by making these 3 changes:
>
>-$window->signal_connect( 'destroy' => \&delete_event );
>+$window->signal_connect( 'delete-event' => \&delete_event );
>
>...
>
> sub delete_event {
> $watch->Unwatch;
>- $canvas->destroy;
> Gtk2->main_quit;
>- return 0;
>+ return 1;
>}
That didn't work for me.
>Was there any particular need to destroy the canvas object rather than
>leaving it to be cleaned up?
Well it was just the steps I took in the programming. The first version, had no
text display, and I got the error. The error went away with
adding $canvas->destroy;
Then I added the text, and the error appeared again, but it would not
go away, as long as the text was being updated. I tried to put
$text->destroy but that didn't work. But as muppet pointed out
undef $text ( and all the canvas items) does the trick.
>
>I've attached a tweaked version of the script that uses a Bezier curve
>to create a half circle rather than using an ellipse object.
>
>Cheers
>Grant
Great....I was looking for an example to make a Bezier, but I guess we are
the ones making examples for others. :-) Thanks. By the way, I did
figure out clipping the circle, by just putting the $canvas into a vbox.
Joe
--
I'm not really a human, but I play one on earth.
http://zentara.net/japh.html
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