Java GUI's

[Hdx]

Well, I need help, how do you set the background of a JFrame?

Code Select Expand

import javax.swing.JFrame;
import java.awt.Graphics;
import java.awt.Color;

public class Form extends JFrame {
public Form() {
super("Helo homies!");
this.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
this.setSize(300, 300);
this.setVisible(true);
setBackground(Color.BLACK);
}

public void paint(Graphics g){
g.setColor(Color.BLACK);
g.fillRect(0, 0, getWidth, getHeight);
g.setColor(Color.RED);
g.drawLine(10, 0, 200, 20);

}
}
I'm trying to have a black background, and a red line.
The black background shows up, untill i start re-sizing.
then it reverts tot he defult grey-ish color.
Anyone have suggestions?
~-~(HDX)~-~

[Joe]

Code Select Expand

import java.awt.Color;
import javax.swing.JFrame;

public class JFrameColor extends JFrame
{
    public JFrameColor()
    {
        super("uh?")
        this.getContentPane..setBackground(Color.BLUE);
        this.setVisible(true);
    }
}

[Hdx]

Compile error FTW!
Anyways, tryed it, corrrecting your misrtake, and sill nothing, whne I re-sized the edges turned white, and the line was no where in sight.
Oh well, they have a example at school i'll look at today :/
~-~(HDX)~-~

[iago]

Try putting a panel on.  Then make the panel (JPanel, whatever) colored. 

[Ender]

You should be calling super.paint(g) in your paint(Graphics) method. You are overriding Container's paint(Graphics) method which renders all the lightweight AWT components. There must be something in the Container.paint(Graphics) method implementation that handles the resizing.

[Joe]

Oops.

Code Select Expand

import java.awt.Color;
import javax.swing.JFrame;

public class JFrameColor extends JFrame
{
    public JFrameColor()
    {
        super("uh?")
        this.getContentPane().setBackground(Color.BLUE);
        this.setVisible(true);
    }
}

Should work. Forgot the () on getContentPane().