Question

I just started using MigLayout for SWING in Java and I’m really liking it so far. The only thing, though, is that the dock parameters don’t seem to work the way I thought they worked and I can’t figure out what I’m doing wrong.

The problem is: I’m trying to add a JButton inside a JPanel and docking it to the right side using panel.add(button, “east”);. While it actually makes it the rightmost component, it still only takes the same space as it would in a flowLayout. What I’d like it to do is stick to the right side of the panel.

Here’s some compilable code that recreates the problem:

public class MigLayoutTest extends JFrame
{
  public MigLayoutTest()
  {
    setSize(500,500);

    JPanel panel = new JPanel(new MigLayout());
    panel.setBackground(Color.YELLOW);
    setContentPane(panel);
    panel.setSize(500,500);
    panel.add(new JButton("Dock east"), "east");
    panel.add(new JButton("No dock"));
  }

  public static void main(String[] args)
  {
    JFrame frame = new MigLayoutTest();
    frame.setVisible(true);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }
}

Here’s what the output looks like:

And here’s where I’d want the “dock east” button:

If I’m using the parameters wrong, I’d like it if someone could tell me how I’m supposed to make my button dock to the right side of the panel.

Thanks!

Answer 1

You have to specify growth paarameters:

new MigLayout("", "[grow]", "[]")

Be careful though how you use it – it may not work the way you think it is. Here is a good read up on MigLayout features http://www.miglayout.com/QuickStart.pdf