" or if there is a way to disable the sizing of the window completely."
You can set the resizable property of the frame to false. From NetBeans GUI Builder
- Highlight/select the frame component from the design view, or from the navigator window.
- Go to the properties window on the right and look for the property
resizable
and make sure it's unchecked
"I also want to ensure that the image size, its parent JLabel's size, JPanel's size will all adjust to the frame when the I change the size of the window"
One way is to paint the background onto the background panel, instead of using a label with an icon. You can see an example of that here. For the GUI Builder, the easiest way (without having to edit the auto-generated code, which I don't recommend, if you don't know what you are doing) is to use a JPanel
form instead of a JFrame
form. Paint on the JPanel
form, then you can add that JPanel
form to the JFrame
form. You can see here for an easy way to add the JPanel
form to the JFrame
form.
See Performing Custom Painting to learn more about painting
Can also have a look at this
StretchIcon
that you can use with a label.
UPDATE
So your JPanel
form class will ultimately look something like this
public class PanelForm extends javax.swing.JPanel {
private BufferedImage image;
public PanelForm() {
try {
image = ImageIO.read(getClass().getResource("/path/to/image/png"));
} catch (IOException ex) {
ex.printStackTrace();
}
}
@Override
protected void paintComponent(Graphics g) {
super.paintComponent(g);
g.drawImage(image, 0, 0, getWidth(), getHeight(), this);
}
@Override
public Dimension getPreferredSize() {
return new Dimension(500, 500);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable(){
public void run() {
JFrame frame = new JFrame();
frame.add(new PanelForm()); // <--- add it here
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
}