[5413] in java-interest
Why the Dialog box comes out twice ?
daemon@ATHENA.MIT.EDU (mark@hactl.com.hk)
Thu Feb 8 04:42:04 1996
From: mark@hactl.com.hk
Date: Thu, 8 Feb 1996 15:27:31 +0800
To: java-interest@java.sun.com
Cc: mark@hactl.com.hk
Hi guys,
I written a experimental program for my room booking application. The
only function of the source code below is when mouse is clicked in the
frame it will pop up a dialogbox. The problem I meet is each time when
I click the mouse the Dialog box comes out twice. Could somebody
please tell me what is wrong. I would appreciate your advice.
Best regards,
Mark
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
import java.awt.*;
import java.io.*;
import java.util.*;
public class CRBS1 extends Frame
{
static final int H_SIZE = 400;
static final int V_SIZE = 360;
Book book=null;
public CRBS1()
{
super("Room Booking System");
setFont(new Font("TimesRoman", Font.PLAIN, 12));
setBackground(Color.white);
setForeground(Color.black);
setLayout(new BorderLayout());
pack();
resize(H_SIZE, V_SIZE);
show();
}
public boolean handleEvent(Event evt)
{
switch(evt.id)
{
case Event.WINDOW_DESTROY:
{
System.exit(0);
return true;
}
case Event.MOUSE_DOWN:
{
BookDialog DB = new BookDialog(this);
return true;
}
default:
return false;
}
}
public static void main(String args[])
{
new CRBS1();
}
}
class BookDialog extends Dialog
{
static int H_SIZE = 300;
static int V_SIZE = 200;
public BookDialog(Frame parent)
{
super(parent,"Book a Room",false);
setBackground(Color.gray);
setLayout(new BorderLayout());
Panel p = new Panel();
p.add(new Button("OK"));
p.add(new Button("CANCEL"));
add("South",p);
resize(H_SIZE, V_SIZE);
show();
}
public boolean action(Event evt, Object arg)
{
if(arg.equals("OK"))
{
dispose();
return true;
}
return false;
}
}
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