JFrame focus
Hi
I got several JFrame's, where one is the main frame, which detects shortcuts (key pressed events). When a key is pressed other JFrame's are shown or iconized (dependent on their current state). Everything works fine except that my main frame loses focus, when the one of the sub JFrames is iconized (with the setState() method). How do I keep the main frame in focus after changing the state of the sub JFrames? I tried requestFocus, requestWindowFocus(), show() and nothing seems to work, the main frame keeps losing focus...
Thanks Denker, Denmark
When a key is pressed other JFrame's are shown or iconized You have multiple JFrames and you only have a problem with one of them? What is different about this frame compared to the others? Isolate the difference and that might help lead to a solution.
Also, maybe you should be using multiple JDialogs instead of JFrames. Typically an application has one main frame with helper dialogs.
Similar Messages
-
Problems with 'background' JFrame focus when adding a modal JDialog
Hi all,
I'm trying to add a modal JDialog to my JFrame (to be used for data entry), although I'm having issues with the JFrame 'focus'. Basically, at the moment my program launches the JFrame and JDialog (on program load) fine. But then - if I switch to another program (say, my browser) and then I try switching back to my program, it only shows the JDialog and the main JFrame is nowhere to be seen.
In many ways the functionality I'm looking for is that of Notepad: when you open the Find/Replace box (albeit it isn't modal), you can switch to another program, and then when you switch back to Notepad both the main frame and 'JDialog'-esque box is still showing.
I've been trying to get this to work for a couple of hours but can't seem to. The closest I have got is to add a WindowFocusListener to my JDialog and I hide it via setVisible(false) once windowLostFocus() is fired (then my plan was to implement a similar functionality in my JFrame class - albeit with windowGainedFocus - to show the JDialog again, i.e. once the user switches back to the program). Unfortunately this doesn't seem to work; I can't seem to get any window or window focus listeners to actually fire any methods, in fact?
I hope that kind of makes sense lol. In short I'm looking for Notepad CTRL+R esque functionality, albeit with a modal box. As for a 'short' code listing:
Main.java
// Not all of these required for the code excerpt of course.
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.GraphicsEnvironment;
import java.awt.Rectangle;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.event.WindowFocusListener;
import java.awt.event.WindowListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JSplitPane;
import javax.swing.UIManager;
import javax.swing.plaf.basic.BasicSplitPaneDivider;
import javax.swing.plaf.basic.BasicSplitPaneUI;
public class Main extends JFrame implements ActionListener, WindowFocusListener, WindowListener, FocusListener {
static JFrame frame;
private static int programWidth;
private static int programHeight;
private static int minimumProgramWidth = 700;
private static int minimumProgramHeight = 550;
public static SetupProject setupProjectDialog;
public Main() {
// Setup the overall GUI of the program
private static void createSetupProjectDialog() {
// Now open the 'Setup Your Project' dialog box
// !!! Naturally this wouldn't auto-open on load if the user has already created a project
setupProjectDialog = new SetupProject( frame, "Create Your Website Project", true );
// Okay, for this we want it to be (say) 70% of the progamWidth/height, OR *slightly* (-25px) smaller than the minimum size of 700/550
// Change (base on programWidth/Height) then setLocation
int currProgramWidth = getProgramWidth();
int currProgramHeight = getProgramHeight();
int possibleWidth = (int) (currProgramWidth * 0.7);
int possibleHeight = (int) (currProgramHeight * 0.7);
// Set the size and location of the JDialog as needed
if( (possibleWidth > (minimumProgramWidth-25)) && (possibleHeight > (minimumProgramHeight-25)) ) {
setupProjectDialog.setPreferredSize( new Dimension(possibleWidth,possibleHeight) );
setupProjectDialog.setLocation( ((currProgramWidth/2)-(possibleWidth/2)), ((currProgramHeight/2)-(possibleHeight/2)) );
else {
setupProjectDialog.setPreferredSize( new Dimension( (minimumProgramWidth-25), (minimumProgramHeight-25)) );
setupProjectDialog.setLocation( ((currProgramWidth/2)-((minimumProgramWidth-25)/2)), ((currProgramHeight/2)-((minimumProgramHeight-25)/2)) );
setupProjectDialog.setResizable(false);
setupProjectDialog.toFront();
setupProjectDialog.pack();
setupProjectDialog.setVisible(true);
public static void main ( String[] args ) {
Main frame = new Main();
frame.pack();
frame.setVisible(true);
createSetupProjectDialog();
// None of these get fired when the Jframe is switched to. I also tried a ComponentListener, but had no joy there either.
public void windowGainedFocus(WindowEvent e) {
System.out.println("Gained");
setupProjectDialog.setVisible(true);
public void windowLostFocus(WindowEvent e) {
System.out.println("GainedLost");
public void windowOpened(WindowEvent e) {
System.out.println("YAY1!");
public void windowClosing(WindowEvent e) {
System.out.println("YAY2!");
public void windowClosed(WindowEvent e) {
System.out.println("YAY3!");
public void windowIconified(WindowEvent e) {
System.out.println("YAY4!");
public void windowDeiconified(WindowEvent e) {
System.out.println("YAY5!");
public void windowActivated(WindowEvent e) {
System.out.println("YAY6!");
public void windowDeactivated(WindowEvent e) {
System.out.println("YAY7!");
public void focusGained(FocusEvent e) {
System.out.println("YAY8!");
public void focusLost(FocusEvent e) {
System.out.println("YAY9!");
SetupProject.java
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.awt.event.WindowFocusListener;
import java.awt.event.WindowListener;
import java.io.IOException;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;
public class SetupProject extends JDialog implements ActionListener {
public SetupProject( final JFrame frame, String title, boolean modal ) {
// Setup the JDialog
super( frame, title, modal );
setDefaultCloseOperation( JDialog.DISPOSE_ON_CLOSE );
// Bad code. Is only temporary
add( new JLabel("This is a test.") );
// !!! TESTING
addWindowFocusListener( new WindowFocusListener() {
public void windowGainedFocus(WindowEvent e) {
// Naturally this now doesn't get called after the setVisible(false) call below
public void windowLostFocus(WindowEvent e) {
System.out.println("Lost");
setVisible(false); // Doing this sort of thing since frame.someMethod() always fires a null pointer exception?!
}Any help would be very much greatly appreciated.
Thanks!
TristanHi,
Many thanks for the reply. Isn't that what I'm doing with the super() call though?
As in, in Main.java I'm doing:
setupProjectDialog = new SetupProject( frame, "Create Your Website Project", true );Then the constructor in SetupProject is:
public SetupProject( final JFrame frame, String title, boolean modal ) {
// Setup the JDialog
super( frame, title, modal );
And isn't the super call (since the class extends JDialog) essentially like doing new JDialog(frame,title,modal)?
If not, that would make sense due to the null pointer exception errors I've been getting. Although I did think I'd done it right hence am confused as to the right way to handle this,if so.
Thanks,
Tristan
Edited by: 802573 on 20-Oct-2010 08:27 -
In Unix, main JFrame focus not regained after modal dialog exit.
Hi all,
I'm new to this forum so hopefully this is the right place to put this question.
I have a relatively simple GUI application written in Java 6u20 that involves a main gui window (extends JFrame). Most of the file menu operations result in a modal dialog (either JFileChooser or JOptionPane) being presented to the user.
The problem is that when running on Unix (HPUX), the process of changing focus to one of these modal dialogs occasionally results in a quick flash of the background terminal window (not necessarily that used to launch the Java), and the process of closing the modal dialogs (by any means, i.e. any dialog button or hitting esc) doesn't always return focus to the main extended JFrame object, sometimes it goes to the terminal window and sometimes just flashes the terminal window before returning to the main JFrame window.
I think the problem is with the Unix window manager deciding that the main focus should be a terminal window, not my Java application, since the problem occurs in both directions (i.e. focus from main JFrame to modal dialog or vice versa).
In most cases of JOptionPane, I DO specify that the main extended JFrame object is the parent.
I've tried multiple things since the problem first occured, including multiple calls to a method which calls the following:
.toFront();
.requestFocus();
.setAlwaysOnTop(true);
.setVisible(true);
..on the main JFrame window (referred to as a public static object)...
just before and after dialog display, and following selection of any button from the dialogs. This reduced the frequency of the problem, but it always tends to flash the terminal window if not return focus to it completely, and when it occurs (or starts to occur then gets worse) is apparently random! (which makes me think it's an OS issue)
Any help appreciated thanks,
Simon
Self-contained compilable example below which has the same behaviour, but note that the problem DOESN'T occur running on Windows (XP) and that my actual program doesn't use auto-generated code generated by a guibuilder:
* To change this template, choose Tools | Templates
* and open the template in the editor.
package example;
import javax.swing.JOptionPane;
* @author swg
public class Main {
* @param args the command line arguments
public static void main(String[] args) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new NewJFrame().setVisible(true);
class NewJFrame extends javax.swing.JFrame {
/** Creates new form NewJFrame */
public NewJFrame() {
initComponents();
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jMenuBar1 = new javax.swing.JMenuBar();
jMenu1 = new javax.swing.JMenu();
jMenuItem1 = new javax.swing.JMenuItem();
jMenu2 = new javax.swing.JMenu();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jMenu1.setText("File");
jMenuItem1.setText("jMenuItem1");
jMenuItem1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jMenuItem1ActionPerformed(evt);
jMenu1.add(jMenuItem1);
jMenuBar1.add(jMenu1);
jMenu2.setText("Edit");
jMenuBar1.add(jMenu2);
setJMenuBar(jMenuBar1);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 400, Short.MAX_VALUE)
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGap(0, 279, Short.MAX_VALUE)
pack();
}// </editor-fold>
private void jMenuItem1ActionPerformed(java.awt.event.ActionEvent evt) {
int result = JOptionPane.showConfirmDialog(this, "hello");
// Variables declaration - do not modify
private javax.swing.JMenu jMenu1;
private javax.swing.JMenu jMenu2;
private javax.swing.JMenuBar jMenuBar1;
private javax.swing.JMenuItem jMenuItem1;
// End of variables declaration
}It won't comfort you much, but I had similar problems on Solaris 10, and at the time we traked them down to a known bug [6262392|http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6262392]. The status of this latter is "Closed, will not fix", although it is not explained why...
It's probably because the entry is itself related to another, more general, bug [6888200|http://bugs.sun.com/bugdatabase/view_bug.do;jsessionid=b6eea0fca217effffffffe82413c8a9fce16?bug_id=6888200], which is still open.
So it is unclear whether this problem will be worked upon (I suspect that yes) and when (I suspect that... not too soon, as it's been dormant for several years!).
None of our attempts (+toFront(...)+ etc...) solved the issue either, and they only moderately lowered the frequency of occurrence.
I left the project since then, but I was said that the workaround mentioned in the first bug entry (see comments) doesn't work, whereas switching to Java Desktop instead of CDE reduced the frequency of the issues (without fixing them completely either) - I don't know whether it's an option on HPUX.
Edited by: jduprez on Jul 9, 2010 11:29 AM -
A focus question: button activated by mouse or by ENTE
In the following program:
If the program is run as is ? The button can be activated only by the mouse.
If the part:
// try {
// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
// catch(Exception e) {
// e.printStackTrace();
is used, the button can be activated also by ENTER and the focus is the default.
How to get the second option not using SystemLookAndFeel ?
Which option is better for an application or an applet ?
Help would be appreciated.
import javax.swing.*;
import java.awt.event.*;
public class Focus extends JPanel {
JButton b2;
public Focus() {
// try {
// UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
// catch(Exception e) {
// e.printStackTrace();
b2 = new JButton(("Is it ok?"));
add(b2);
b2.addActionListener(buttonListener);
ActionListener buttonListener = new ActionListener() {
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand().equals("Is it ok?")) {
System.out.println("It's ok !!!");
public static void main(String[] args) {
JFrame fr = new JFrame();
Focus fc = new Focus();
fr.getContentPane().add(fc);
fr.setVisible(true);
fr.pack();dialog.setModal(true);beat you!
You did provide code though :) -
Is this a Bug?: FocusListener called twice
Hey all,
Im having this problem since realease 1.4.2_04.
Folks, try this code:
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class FocusTest {
public static void main(String[] args) {
JFrame frame = new JFrame("Focus test");
final JTextField field1 = new JTextField("Test1");
final JTextField field2 = new JTextField("Test2");
field1.addFocusListener(new FocusAdapter(){
public void focusGained(FocusEvent e){}
public void focusLost(FocusEvent e){
if( !e.isTemporary() ){
System.out.println("ID: " + e.getID());
JOptionPane.showMessageDialog(null, "Focus lost in 1");
field1.requestFocus();
frame.getContentPane().add(field1, BorderLayout.WEST);
frame.getContentPane().add(field2, BorderLayout.CENTER);
frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
frame.setBounds(0,0,200,300);
frame.show();
} The problem is: when TF1 looses its focus, and is validated, then i force the focus to keep on TF1 by calling TF1.requestFocus(), somehow the event focusLsot is called twice for my TF.
If i do not requestFocus() it work but I must force the focus on TF1.
Im going nuts. Does anyonw apear to have this problems?? In old realeses, the same code work perfect. until 1.4.2 beta.
Tks
BrunoHello all!
I found out that somehow JDialog with requestfocus after, fires twice the lostFocus event. I dont know why. I opened a bug report so they can figure it out why is happaning.
Tks folks!
Bruno -
How can I ensure that a JFrame will always keep focus?. I need it to always remain on top and be visible
thanksA tricky one.
Java doesn't allow this. Not even the upcoming version 1.4 allows this.
I have done it, though and many people on this forum have. What you need to do is go native. If you are on the Windows platform write a JNI (Java Native Interface) compliant DLL and call it from your code using the native keyword. If you want some code write me at [email protected]
Morten Hjerl-Hansen -
Printing a focused chart contained in a JFrame
Hello everyone,
I have problem of printing a focused chart which contained in a JFrame. Here is the case:
1) A JFrame I designed as the root of my application, in which there are menu items, such as Print, Save,Open....
2)A graphwindow is opened when user hits the "Open" from the above menu list. This graphwindow is basically another JFrame, which contains a chart ( a JPanel). It is an instance of a General chart class somewhere else.
3) User is able to open multiple graphwindow by selecting different data. the window is able to be focused by a mouse click,just like all the windows applicaiton.
Hope you have a clear picture now.
Now, I'm trying to implement the Print function in the Root Frame which should be able to print out the focused the graphwindow. Could anyone please tell me how to do it? any ideas?
All the reply will be appreciated.
-SQHere's one thread with my solution:
http://forum.java.sun.com/thread.jsp?forum=57&thread=501660
and here's some more discussion:
http://forum.java.sun.com/thread.jsp?forum=57&thread=407727 -
How can I stop a JFrame from taking the focus?
Hi,
Please see my original post in the Java Event Handling forum:
http://forum.java.sun.com/thread.jsp?forum=424&thread=565034&tstart=0&trange=15
Sorry, for cross-posting but its been nearly a week and I have had no replies. This forum looks a bit more active.
- Davidtry this...
JFrame frame = new JFrame();
frame.setFocusableWindowState(false);setFocusableWindowState
public void setFocusableWindowState(boolean focusableWindowState)Sets whether this Window can become the focused Window if it meets the other requirements outlined in isFocusableWindow. If this Window's focusable Window state is set to false, then isFocusableWindow will return false. If this Window's focusable Window state is set to true, then isFocusableWindow may return true or false depending upon the other requirements which must be met in order for a Window to be focusable.
Setting a Window's focusability state to false is the standard mechanism for an application to identify to the AWT a Window which will be used as a floating palette or toolbar, and thus should be a non-focusable Window.
Parameters:
focusableWindowState - whether this Window can be the focused Window -
How to set focus on opened new JFrame??
Hi,
I have a problem:
I have my active JFrame that I am currently running.
When I press a JButton I have an action that it opens another JFrame,
which is minimized (maybe it doesn't have a focus enabled or something)
How to make the opening JFrame window maximized and make it be the one on the foreground (put the first JRame in background)
ThanksTry this:
import java.awt.event.*;
import javax.swing.*;
import java.awt.*;
public class JFrames extends JFrame{
public JFrames(){
super();
// exit on close
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// button to create new JFrame
JButton button = new JButton("New Frame");
button.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
// create new instance and maximize it
JFrames frame = new JFrames();
frame.setExtendedState(frame2.getExtendedState()|frame2.MAXIMIZED_BOTH);
// panel to add the button to
JPanel panel = new JPanel();
panel.setPreferredSize(new Dimension(300, 200));
panel.add(button);
this.getContentPane().add(panel);
// display the frame
this.pack();
this.setVisible(true);
public static void main(String args[]){
JFrames frames = new JFrames();
} -
Making JFrame Window Lose Focus to a Native Window
How can i from within the same JFrame code or another class with the JFrame reference make JFrame lose focus to another native window on the desktop.
Any tipsIn the core java API you can not make a native window take focus, you would have to use native code (JNI).
The best you could do would be minimize the JFrame. -
Forcing JFrame to lose its focus programatically
Hello everyone,
I have a JFrame with a button over it. Now I wants that when I click on the button,
my JFrame should lose its focus.
Can anybody tell me whether it is possible in java or not?
Thanks in advance.It depends upon the underlying OS
On Windows XP it goes to the last application which was in focus.
For eg- If I first open up a notepad and after that my java application the once my application loses its focus it should go to notepad.
But i think that will be handled by the OS itself because when you minimizes an application then the application which had the focus before this one will automatically get the focus. -
Jframe lose focus with jdk 1.4 beta90
My jframe has two JInternalFrame. One contains a jtree, another contains a jeditorpane. A jpopup menu will appear, after I click the jtree. After I finish the jpopupmenu action, my jeditorpane can not recieve any keyboard event. The only workaround is to switch to any other application, then click jeditorpane again.
I trace the status of the JFrame.
1. JFrame get focus
2. after click jtree, JFrame lose focus
3. After finish the jpopup menu action, JFrame should gain focus. but JFrame doesn't get that.
How can I figure it out. Any advice would be highly appreciated.i believe it is a bug of jdk14
-
I am trying to have a key listener inside a Jframe which will work no matter where the focus is, currently it only works when the focus is at certain locations. How can I do this, here is where I create the frame and components and attempt to get the keylistener to work....
import java.awt.*;
import javax.swing.*;
//import cs1.*;
//import java.io.*;
import java.awt.event.*;
//import java.applet.*;
class Driver extends JPanel implements ActionListener, KeyListener
static String title = "Number Munchers"; //Game title
Board board; //Game board
public JFrame frame; //Game frame
protected JButton b1,b2,b3,b4,b5;
Score s1=new Score();
Monster monster1;
public void createAndShowGUI()
frame = new JFrame("Number Munchers");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.addKeyListener(this);
board = new Board(this);
JMenuBar menuBar = new JMenuBar();
JMenu fileMenu = new JMenu("File");
JMenu optionMenu =new JMenu("Options");
JMenuItem start = new JMenuItem("New Game");
JMenuItem end = new JMenuItem("End Game");
JMenuItem sound = new JMenuItem("Sound On");
JMenuItem mute = new JMenuItem("Mute");
start.addActionListener(this);
start.setActionCommand("New Game");
end.addActionListener(this);
end.setActionCommand("Exit");
sound.addActionListener(this);
sound.setActionCommand("Sound");
mute.addActionListener(this);
mute.setActionCommand("Mute");
menuBar.add(fileMenu);
menuBar.add(optionMenu);
fileMenu.add(start);
fileMenu.add(end);
optionMenu.add(sound);
optionMenu.add(mute);
frame.setJMenuBar(menuBar);
//Add Number Muncher game board to frame
frame.getContentPane().add(board,BorderLayout.CENTER);
//Add score to frame
frame.getContentPane().add(s1.scoreLabel, BorderLayout.NORTH);
//frame.getContentPane().add(l1.livesLabel, BorderLayout.EAST);
//Add info to frame
frame.getContentPane().add(board.getGameLabel(), BorderLayout.EAST);
frame.getContentPane().add(board.getScoreLabel(), BorderLayout.NORTH);
frame.getContentPane().add(board.getLivesLabel(), BorderLayout.SOUTH);
frame.setSize(550,550);
frame.setVisible(true);
monster1 = new Monster(0,0,this,board,board.muncher);
public static void main (String args[])
final Driver driver = new Driver();
javax.swing.SwingUtilities.invokeLater(new Runnable()
public void run()
driver.createAndShowGUI();
}//End main method
public void keyPressed(KeyEvent e)
System.out.println("Key pressed");
if(e.getKeyCode()==KeyEvent.VK_LEFT)
System.out.print("LEFT ");
board.move(-1,0);
System.out.println(board.muncher.returnY() + " " + board.muncher.returnX());
if(e.getKeyCode()==KeyEvent.VK_RIGHT)
System.out.print("RIGHT ");
board.move(1,0);
System.out.println(board.muncher.returnY() + " " + board.muncher.returnX());
if(e.getKeyCode()==KeyEvent.VK_UP)
System.out.print("UP ");
board.move(0,1);
if(e.getKeyCode()==KeyEvent.VK_DOWN)
System.out.print("DOWN ");
board.move(0,-1);
System.out.println(board.muncher.returnY() + " " + board.muncher.returnX());
public void keyTyped(KeyEvent e)
public void keyReleased(KeyEvent e)
if(e.getKeyCode()==KeyEvent.VK_CONTROL)
System.out.println("MUNCH");
board.munch();
if(e.getKeyCode()==KeyEvent.VK_ENTER)
System.out.println("REFRESH BOARD");
board.refresh();
public void actionPerformed(ActionEvent e)
//Menu Bar
if(e.getActionCommand().equals("New Game"))
System.out.println("New Game");
board.clear();
s1.refreshScore();
if(e.getActionCommand().equals("Exit"))
JOptionPane.showMessageDialog(frame,"Are you sure you want to exit?");
System.exit(0);
if(e.getActionCommand().equals("Sound"))
System.out.println("Sound On");
if(e.getActionCommand().equals("Mute"))
System.out.println("Mute");
} //end Driver class
If you can help thanks a lot, this is a problem I have spent a long time attempting to fix.
Geoff Grosschack this URL http://developer.java.sun.com/developer/bugParade/bugs/4647551.html
I reported it as a bug 3 years ago and still did not find a solution to this problem, but sun still convince that making us a hard life and getting to no where is still not their bug.
If you want to help me with this fight please send them also an email and report it as a bug.
Amnonm -
How to have focus in 2 JPanels on 1 JFrame?
Hey all..
Like i wrote in the subject, how can i do that?
I have 2 JPanels in 1 JFrame. 1 top JPanel and 1 buttom JPanel. I've a keylistener in top JPanel and a buttonslistener in buttom JPanel. When i press on the button on the buttom JPanel, then my keylistener wont trigger in the top JPanel.
Plz help.
Thx.The whole point to window focus is to avoid this! There is at most one focused component per window.
As a rule of thumb, when someone uses a KeyListener, they're mistaken. You should be using key binding. This can make your focus problems go away, since you can choose to associate the keyStoke with the whole window, not just the focused component.
[http://java.sun.com/docs/books/tutorial/uiswing/misc/keybinding.html] -
Preventing a JFrame/dialog from showing in the task bar & gaining focus.
As the (lengthly) title suggested, I would like to know if it is possible to create a JFrame or JDialog that can run (more or less) on its own without appearing in the task bar or gaining focus when setVisible() is called.
Anyone know how to do this, or have better Google search term to use than the ones I thought up? ;-)The point is for it to stay visible (normally) when when it is not hidden (it is hidden for ~1 second to take a screenshot) and then shown again. The problem with this is that the application currently in focus loosees it (which is very annoying when typing...).
I'm trying to make a 'desktop button' of sorts that just acts as a tray icon when the system tray isn't supported. I put some effort into making it have a transparent background, but by doing that setVisible() is called every 15 seconds or so. (the frame is alwaysOnTop as well), thus the reason that I don't want the focus to be taken.
As for not showing in the system tray, I don't really need it although it would certainly make the icon better.
With that said, is there some way to accomplish this?
Thanks for the quick reply!
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How to add button inside move clip and call it from main timeline?
Hi, On the main timeline I have a movie clip called clock_mc and playBtn playBtn is placed in the center of clock_mc When you press playBtn clock_mc starts playing playBtn.addEventListener(MouseEvent.CLICK, playClock); function playClock(event:Mous
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History of all changes in application by employee.
hi i want to keep all record or history of all click or changes in application .Which have done by employee. How can i do this. Thanks Manoj
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Update firmware to use iTunes with multiple speakers
I updated iTunes today to the new version 6.02.23 mainly because I was anxious to use the new "multiple speakers" feature. When I went to try it, though, I found no option...just My Computer and AirTunes. All I had to do was update the firmware on my
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Purchase order still contains faulty items
Hi , While creating Purchase Order through BAPI I am getting the error : purchase order still contains faulty items How to rectify that?
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Sites for UI creation in Photoshop...
Looking for good sites for UI creation in Photoshop. I already have PSDTuts just wanted some other suggestions. Thanks!