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Groups > comp.lang.java.gui > #2047

Re: Problem with loaded i

From "Daniel Kraft" <daniel.kraft@THRWHITE.remove-dii-this>
Subject Re: Problem with loaded i
Message-ID <f79qf5$55i$1@newsreader2.utanet.at> (permalink)
Newsgroups comp.lang.java.gui
References <slrnf9fano.1tdq.aggedor@earl-grey.cloud9.net>
Date 2011-04-27 15:36 +0000
Organization TDS.net

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  To: comp.lang.java.gui
>> Thank you very much, that solved my very problem... I'm sorry for this 
>> stupid mistake -- however, why was the full image painted when 
>> hiding/showing the window although the offscreen-image was not resized?
>>
>> Was this simply "by chance" or is there a stronger reason why that happend?
> 
> You can learn the answers these questions by reading another part of my
> previous followup that you did not quote in your reply.  Here is that
> part again:
> 
>   You are likely seeing different redrawing results from pack() and
>   hiding-and-showing because one ends up invoking update while the other
>   ends up invoking paint.  See
>                                                                                 
>   http://java.sun.com/products/jfc/tsc/articles/painting/index.html#awt
>                                                                                 
>   for a description of "Painting in the AWT".
> 
> Over-simplifying:
> 
> - When a Java program executes repaint (either directly in code you write
>   or in the implementation of standard java methods, such as pack) the
>   update method will be called.  Your update method clipped to the size
>   of the original image.
> 
> - When the windowing system of the computer on which a Java program is
>   running determines that a window needs to be repainted, the paint method
>   will be called.  Your paint method did not clip to the size of the
>   original image.

Oh, I see -- up to now I thought repainting would *always* be done via 
update, no matter if I called repaint() manually of the window system 
determined that a repaint was needed.

Once more, thank you!
Daniel

-- 
Got two Dear-Daniel-Instant Messages
by MSN, associate ICQ with stress --
so please use good, old E-MAIL!

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Thread

Problem with loaded image "Daniel Kraft" <daniel.kraft@THRWHITE.remove-dii-this> - 2011-04-27 15:36 +0000
  Re: Problem with loaded i "Roedy Green" <roedy.green@THRWHITE.remove-dii-this> - 2011-04-27 15:36 +0000
  Re: Problem with loaded i "A. Bolmarcich" <a..bolmarcich@THRWHITE.remove-dii-this> - 2011-04-27 15:36 +0000
    Re: Problem with loaded i "Daniel Kraft" <daniel.kraft@THRWHITE.remove-dii-this> - 2011-04-27 15:36 +0000
      Re: Problem with loaded i "A. Bolmarcich" <a..bolmarcich@THRWHITE.remove-dii-this> - 2011-04-27 15:36 +0000
        Re: Problem with loaded i "Daniel Kraft" <daniel.kraft@THRWHITE.remove-dii-this> - 2011-04-27 15:36 +0000

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