Dialog Box

[Angela Jessi]

Hi,
Can I display Dialog without extending class as Frame or Window?
If yes, how? Would you please explain me by simple example?
Thanks in advance,
angela

[Jim Yingst]

This should really be in the Swing/JFC/AWT forum, so I'm transferring it...

[Jim Yingst]

A java.awt.Dialog is already an extension of java.awt.Window, so you can't change that. I suppose it might be possible to create a Dialog-like component that des not extend Window, but why? What's wrong with using a Window?

[Angela Jessi]

Thank Jim,
Here is my code:
import java.applet.Applet;
import java.awt.*;
public class myDialog extends Frame
{
Dialog md ;
myDialog()
{
md = new Dialog(this, "Error Message Window");
Panel p = new Panel();
Label l = new Label("No Server Response");
p.add(l);
md.add("Center" ,p);
Panel p2 = new Panel();
p2.setLayout(new FlowLayout());
Button ok = new Button("Retry");
Button cancel = new Button("Cancel");
p2.add(ok);
p2.add(cancel);
md.add("South",p2);

}
public static void main(String args[])
{
myDialog theApp = new myDialog();
theApp.show();
}
}
I want to display dialog box without extending class to Frame?
Please let me know how can I do it?
THanks again
angela

[Mike Curwen]

Here is a dialog class I made as a practice exercise:

import java.awt.*;
import java.awt.event.*;

public class mcDialog extends Dialog implements ActionListener {
mcDialog(Frame parent, String title) {
super(parent, title, false);
setLayout(new FlowLayout());
setSize(300,200);
Button b;
add(b = new Button("Cancel"));
b.addActionListener(this);  // it listens for its own events
}
public void actionPerformed(ActionEvent ae) {
//same as VB's Unload Me (as opposed to me.Hide)
dispose();
}

} // end of mcDialog

An application that would *use* this mcDialog class, would need to extend Frame. (typically, dialogs require a frame as a parent, however I've seen programs send null)
The comment about VB was for me, since I come from a VB Background. In fact, now that I take a second look, the comment is wrong. dispose() is like Me.hide, and not at all like Unload Me.
[This message has been edited by Mike Curwen (edited March 27, 2001).]