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Where should I dispose the Image used by Label? [message #152762]

Mon, 04 October 2004 23:52

Eclipse User

Originally posted by: wangwei.org.gmail.com

Hi, all!

If I use a image in a Draw2D Label, where should I dispose it?

I tried to override the paintFigure() method like this:

Image image = new Image(...);
label.setIcon(image);

super.paintFigure(g);

image.dispose();

but got an exception:
"java.lang.IllegalArgumentException: Argument not valid"

Thanks!

regards, wangwei

Re: Where should I dispose the Image used by Label? [message #152905 is a reply to message #152762]

Tue, 05 October 2004 16:56

Eclipse User

Originally posted by: none.us.ibm.com

You should probably keep the image around for the duration of the editor's
existence, or at least as long as the figure exists. Figures are not
disposed, but its editpart is guaranteed to be deactivated, so you can get
rid of the Image at that point. You may want to look into creating a
registry or utility for sharing images across figures/editparts/editors.

"WANG Wei" <wangwei.org@gmail.com> wrote in message
news:cjt5i0$4ic$1@eclipse.org...
> Hi, all!
>
> If I use a image in a Draw2D Label, where should I dispose it?
>
> I tried to override the paintFigure() method like this:
>
> Image image = new Image(...);
> label.setIcon(image);
>
> super.paintFigure(g);
>
> image.dispose();
>
> but got an exception:
> "java.lang.IllegalArgumentException: Argument not valid"
>
> Thanks!
>
> regards, wangwei
>
>

Re: Where should I dispose the Image used by Label? [message #152989 is a reply to message #152905]

Wed, 06 October 2004 07:39

Eclipse User

Originally posted by: wangwei.org.gmail.com

Thank you!

So I think I could override the function EditPart.deactivate(),
Using a registry is also a good idea, and I have created one.

"Randy Hudson" <none@us.ibm.com> wrote in message
news:cjv1gg$s63$1@eclipse.org...
> You should probably keep the image around for the duration of the editor's
> existence, or at least as long as the figure exists. Figures are not
> disposed, but its editpart is guaranteed to be deactivated, so you can get
> rid of the Image at that point. You may want to look into creating a
> registry or utility for sharing images across figures/editparts/editors.
>
> "WANG Wei" <wangwei.org@gmail.com> wrote in message
> news:cjt5i0$4ic$1@eclipse.org...
> > Hi, all!
> >
> > If I use a image in a Draw2D Label, where should I dispose it?
> >
> > I tried to override the paintFigure() method like this:
> >
> > Image image = new Image(...);
> > label.setIcon(image);
> >
> > super.paintFigure(g);
> >
> > image.dispose();
> >
> > but got an exception:
> > "java.lang.IllegalArgumentException: Argument not valid"
> >
> > Thanks!
> >
> > regards, wangwei
> >
> >
>
>

Re: Where should I dispose the Image used by Label? [message #153394 is a reply to message #152989]

Fri, 08 October 2004 21:00

Eclipse User

Originally posted by: wkrain.hotmail.com

hi buddy!
i am form china ,i think you too,so can i make friend with you and
commuciation gef with you ?if it is yes,please send mail to me ,i will very
happy.
"WANG Wei" <wangwei.org@gmail.com> д

Re: Where should I dispose the Image used by Label? [message #153402 is a reply to message #152762]

Fri, 08 October 2004 21:19

Eclipse User

Originally posted by: wkrain.hotmail.com

"WANG Wei" <wangwei.org@gmail.com> д

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