painting is Swing

How to work with Graphics in Swing?
Specially in JFrame

PM a moderator to move this thread. This forum is only for working samples, not asking questions.

I am really sorry to post the question here.

Moved from Java CodeBank.

Quote:

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Originally Posted by purusingh1

How to work with Graphics in Swing?
Specially in JFrame

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override the paintComponent() method.

Code:

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public void paintComponent(Graphics g)
{
      g.drawLine(x1,y1,x2,y2);
}

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Thanks but why doesn't it work

setBackground(Color.RED);

Quote:

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Originally Posted by purusingh1

Thanks but why doesn't it work

setBackground(Color.RED);

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For that you don't need a paintComponent method. You can insert that statementing right in the constructor.

Quote:

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Originally Posted by purusingh1

Thanks but why doesn't it work

setBackground(Color.RED);

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What are you accessing the frame itself?

you'd have to get the contentpane for the JFrame for setBackground to work. :D

I don't override much the painting for components.. unless I absolutely have to.

here's a sample on making setBackground on JFrames work

http://www.vbforums.com/showthread.php?t=350197

Thanks a lot.
I see the contentpane should be used insted of using just JFrame.set...

gud for you!. :) Is this now resolved?

yes it's almost resolved but I got some other problem.

If I use

void paint(Graphics g)
void paintComponent(Graphics g)

it over writes my background color.

If I use
getGraphics().drawLine(5,5,100,100);
from other finctions it doesn't show.