NetBeans Swing Form Background Color

NetBeans Swing Form Background Color Can't seem to get it to change Rate Topic:

#1 Locke

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Posted 28 June 2008 - 01:38 PM

Well, I am using NetBeans, using the Swing GUI Creator. The problem is, I have changed the background color property to the standard black [0, 0, 0] color. The problem is, at runtime, the color isn't actually changed, it stays the default kinda greyish color.

Any ideas?

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#2 1lacca

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Posted 28 June 2008 - 02:33 PM

Could you post the generated code?
Or even better: check it yourself. If you have a look at it, you'll see what the IDE is trying to do, and if you've set the background color of the right component.

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#3 Locke

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Posted 28 June 2008 - 03:15 PM

I set the background of the form, not just 1 component. I don't have another form at the moment, and only 1 button on my current form, so it's pretty difficult (I believe) for NetBeans to screw this up.

private void initComponents() 
{
        jButton1 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setTitle("Login");
        setAlwaysOnTop(true);
        setBackground(new java.awt.Color(0, 0, 0));
        setCursor(new java.awt.Cursor(java.awt.Cursor.DEFAULT_CURSOR));
        setResizable(false);

        jButton1.setText("Login");
        jButton1.addActionListener(new java.awt.event.ActionListener() 
        {
            public void actionPerformed(java.awt.event.ActionEvent evt) 
            {
                jButton1ActionPerformed(evt);
            }
        });

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addGap(142, 142, 142)
                .addComponent(jButton1)
                .addContainerGap(149, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                .addContainerGap(167, Short.MAX_VALUE)
                .addComponent(jButton1)
                .addGap(41, 41, 41))
        );

        jButton1.getAccessibleContext().setAccessibleName(null);

        pack();
    }// </editor-fold>

The setBackground(new java.awt.Color(0, 0, 0)) command is correct, since it's just doing this to the form...

EDIT: ARGH, I hate the way NetBeans generates code. (I just switched the brace locations.)

This post has been edited by Locke37: 28 June 2008 - 03:17 PM

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#4 RoboAlex

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Posted 28 June 2008 - 06:19 PM

I'm assuming that this class extends JFrame, so what I think you need to do is:
getContentPane().setBackground(Color.BLACK);

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#5 Locke

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Posted 29 June 2008 - 04:51 PM

Well that's odd...I don't know quite why that worked. Since you would THINK that NetBeans would be smart enough to do that on it's own since I set the property on the form the same as I did in the code.

private LoginForm()
{
    initComponents();
    getContentPane().setBackground(java.awt.Color.black);
}

I still don't know why it doesnt do that automatically...But thanks all the same! :^:

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#6 pbl

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Posted 29 June 2008 - 05:25 PM

I gess it has nothing to do with NetBeans default colors
It has to do with default Java bacground colors around Windows default dark gray

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#7 Locke

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Posted 30 June 2008 - 12:53 PM

That's really weird.

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#8 abgorn

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Posted 01 July 2008 - 01:55 AM

When I use NetBeans it works, but not in the preview. It only shows when you run the file.

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#9 Locke

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Posted 01 July 2008 - 09:27 AM

...That's even weirder.

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#10 1lacca

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Posted 01 July 2008 - 12:43 PM

Why would it be weirder, the preview sucks, period

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#11 Locke

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Posted 02 July 2008 - 08:41 PM

Well, I don't know why NetBeans isn't smart enough to be like VB, and ACTUALLY change the color of the window instead of making me do it manually EVERY time.

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#12 RoboAlex

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Posted 06 July 2008 - 07:41 AM

I'm not sure how you are doing it in netbeans, but if you are asking it to change the background color of the JFrame, then it is doing exactly what it should. The JFrame has a background color, but the entire contents of a JFrame are covered by the content pane, so you need to change to color of the content pane, not the JFrame. Otherwise the content pane simply covers the JFrame and there is no change.

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