Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

How do I center my Dialog window on the screen?

Posted on 2011-09-29
5
172 Views
Last Modified: 2012-05-12
When my Panel opens it is always on the upper left side of the screen.  How can I have it open in the center of the screen?

public void createDialog() {
	  
	  appReg = Registry.getRegistry(this);
	  setTitle(appReg.getString("edi.TITLE"));
	   	   
	  Component selectionsPanel = selectedTable();
   	  Component buttonPanel = OKCancelButtons();
   	  Component currentPanel = currentItems();
   	  centerPanel = new JPanel();
      centerPanel.setLayout(new BoxLayout(centerPanel, BoxLayout.PAGE_AXIS));
      centerPanel.setPreferredSize(new Dimension(750, 350));
            
      centerPanel.add(Box.createRigidArea(new Dimension(5, 0)));
      centerPanel.add(currentPanel);
      centerPanel.add(selectionsPanel);
      centerPanel.add(Box.createHorizontalGlue());
      centerPanel.add(Box.createRigidArea(new Dimension(0, 2)));
      centerPanel.add(buttonPanel);
      
      getContentPane().add(centerPanel);
      
      addComponentListener(new ComponentAdapter() {
        public void componentResized(ComponentEvent event) {
           Component c = event.getComponent();
           c.setSize(Math.max((int)centerPanel.getPreferredSize().getWidth()/2, c.getWidth()),
                     Math.max((int)centerPanel.getPreferredSize().getHeight()/2, c.getHeight()));
        }
      });
  	  	
      this.pack();
      setLocation(getParent().getLocation(null));        
              
      //Display the window.
      centerPanel.setVisible(true);
        
   }// end createDialog()

Open in new window

0
Comment
Question by:jkteater
  • 4
5 Comments
 
LVL 86

Accepted Solution

by:
CEHJ earned 50 total points
ID: 36815246
Try
centerPanel.setLocationRelativeTo(null);        
              
      //Display the window.
      centerPanel.setVisible(true);

Open in new window

0
 

Author Comment

by:jkteater
ID: 36815304
undefined for type JPanel
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 36815558
Sorry - i thought that was the name of a JDialog. You need to call that on the dialog instance
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 36815568
btw, the reason i thought that was that you called setVisible on it (JPanel is visible by default)
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 36892139
:)
0

Featured Post

Free Tool: IP Lookup

Get more info about an IP address or domain name, such as organization, abuse contacts and geolocation.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Error in @AspectJ Based AOP with Spring 2 18
String array comparison 4 38
maven disable workspace resolution 1 15
learn programming 8 29
By the end of 1980s, object oriented programming using languages like C++, Simula69 and ObjectPascal gained momentum. It looked like programmers finally found the perfect language. C++ successfully combined the object oriented principles of Simula w…
This was posted to the Netbeans forum a Feb, 2010 and I also sent it to Verisign. Who didn't help much in my struggles to get my application signed. ------------------------- Start The idea here is to target your cell phones with the correct…
This tutorial will introduce the viewer to VisualVM for the Java platform application. This video explains an example program and covers the Overview, Monitor, and Heap Dump tabs.
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …

790 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question