Re: [java] getGraphics van JPanel

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#2833

From: Passero
Date: Wed, 10 Mar 2004 09:54

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<marc@yanoo.net> schreef in bericht
news:1cmt401j0iokccnjhfrde2r6qen97c2gfl@4ax.com...
> >Wanneer ik de Graphics van een bestaand JPanel ophaal dan
> > krijg ik altijd een nullPointerException. Iemand enig idee hoe
> > dat zou komen ?
>
> 'Buffered-Image'-code (createImage, getGraphics, etc) moet altijd
> geplaatst worden NADAT er een venster (JFrame) geactiveerd is
> (ge�nitialiseerd en zichtbaar is).
>

Ah ok thx.

> Als dat niet gebeurd zal dit resulteren in een NullPointerException
> at runtime.


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