以 GUI swing JFrame 作为其父级创建 JDialog？

Question

This might be a very stupid question, but I just don't know how to do it.

I use swing GUI to create my JFrame. So it is public class client extends javax.swing.JFrame .

In the main method I am doing:

public void run() {
    new Client().setVisible(true);
}

When a button is clicked I want to do this:

JDialog d = new JDialog(frame, "Example", true);

Except I have no idea what goes into 'frame'. I tried to say Client, but that didn't work. What is suppose to go there so that my parent of JDialog is the frame where I am calling it from?

Answer 1

When a button is clicked I want to do this:

You must have added an ActionListener to the button. The ActionEvent will contain the source object that you clicked.

So you can write generic code in the ActionListener to get the parent Window of the button:

JButton button = (JButton)event.getSource();
Window window = SwingUtilities.windowForComponent( button );
JDialog d = new JDialog(window, "Example", true);