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[GC]Is this a bug? [message #437597]

Tue, 08 June 2004 16:47

Eclipse User

Originally posted by: purejd.sohu.com

Hi all,
I'm using eclipse 3.0 m9 on windows 2k.
When I call GC's drawText()/drawImage() to draw a
string/image,it works well at first. But when I move some
window above it,the part of the string/image that
was covered disappears!
I don't know if it's a bug or my fault, so I need your help.
Thanks a lot.

Rong

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Re: [GC]Is this a bug? [message #437600 is a reply to message #437597]

Tue, 08 June 2004 17:36

Eclipse User

Originally posted by: richkulp.NO.SPAM.us.ibm.com

You need to do this within a paint listener. Just painting on something
like that is just temporary until something covers it up. Only if done
through a paint listener will it stay around because everytime it is
re-exposed the paint listener will be called and you can then put the
stuff back.

--
Thanks, Rich Kulp

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Re: [GC]Is this a bug? [message #437868 is a reply to message #437600]

Fri, 11 June 2004 15:58

Rong Tao

Messages: 1
Registered: July 2009

Junior Member

Thanks a lot,the window can display correctly now.
Factually, I'm new to SWT program and this question seems to be so stupid
:-) Could you give me some suggestion on how to study it,besides reading
eclipse's help and examples' code?
Thank u again.
--
Rong

"Rich Kulp" <richkulp@NO.SPAM.us.ibm.com> ??????:ca4t0a$r34$1@eclipse.org...
> You need to do this within a paint listener. Just painting on something
> like that is just temporary until something covers it up. Only if done
> through a paint listener will it stay around because everytime it is
> re-exposed the paint listener will be called and you can then put the
> stuff back.
>
>
> --
> Thanks, Rich Kulp
>
>

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Re: [GC]Is this a bug? [message #437871 is a reply to message #437868]

Fri, 11 June 2004 16:28

Eclipse User

Originally posted by: richkulp.NO.SPAM.us.ibm.com

When you have a question, first go to here:

http://www.eclipse.org/articles/index.html

to see if there are any articles talking about your need. There is an
article about SWT in there.

This one in particular talks about the graphics:

http://www.eclipse.org/articles/Article-SWT-graphics/SWT_gra phics.html

--
Thanks, Rich Kulp

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