JComboBox Unable to recieve key events

Hello,
I have a Table which contains multiple editors and multiple renderers for different items that may or may not be added in the table. I have added a KeySelectionManager to the ComboBox class that I have defined. When I add this Combo box to a Frame/Panel listener recieves key board events, but when I add the combox box to a table which has other components and listeners, the combo box listener is not getting any events.
How do I tell table to send the event to combo box?
Praveen

I didnot write the code. I am trying to add some enhancements to it. Basically I want the Combo box to scroll as I enter the text.
Coming to your question...All the data I have is in another class and I am using the table.setModel(obj) where obj is the Object in which I have data. After setting the model, I am registering the editors and renderers for table.
Please point to me any good tutorial on how the setModel works. I can see that while initializing the editors, there is a call made to the ComboBox class. May be this is where the ComboBox is getting created.
Does this reply makes some sense?
Thanks for your reply,
Praveen

Similar Messages

  • JPanel cannot recieve Key Events?

    Hi. I'm trying to make a simple game, which recieves input from the arrow keys and spacebar. The drawing is done inside a paintComponent() method in a JPanel. Therefore, the key events should also be handled in the same JPanel. I can call the addKeyListener() method on the JPanel, but it does not recieve key events. I've tried calling setFocusable(true) but it doesn't seem to do anything. If JPanel can't recieve key events (it can recieve mouse events fine), I have to handle the events in the JFrame, which I'm hesitant to do. My book does it in an applet and applets can recieve key events fine, but I want to make an application.
    No working source code here, try to figure out what I'm saying.
    Thanks.

    Please help me. I did help you. I gave you a link to the tutorial that shows that proper way to do this.
    All Swing components use Key Bindings so you might as well take the time to understand how they work.
    Anyway, based on your vague description of the problem we can't help you because we don't know the details of your code.

  • Unable to find Key Events when there are multiple Commands

    Hi,
    I've developed a simple J2ME Appln containing 3 commands
    for ex- Exit,Help and Info(all with same priority).
    As there are 3 commands, Exit command is present at the left and the other two namely Help and Info have been listed under Menu and this Menu command is presented at the right.
    My MIDlet class has extened MIDlet and implemented CommandListener. Using CommandAction(), I'm able to generate action for Command press and i've also created a nested class which extends Canvas so, using keyPressed and keyReleased, I'm able to find the Key Press Events.
    Now, my appln needs to find just the key press events. After i press the Menu command, the two commands namely Help and Info are listed. In tht screen, I need to find out whether any other key events are being generated but my keyPressed and keyReleased are not being called.
    Please provide me solution ASAP.

    I'm going to make a few assumptions:
    1. The menu you're describing is the automatically generated one caused by having more than two commands.
    2. The subclass of Canvas is the currently active Displayable (otherwise you won't get any key events at all).
    If this is the case (and someone correct me if I'm wrong), key events are being handled by the phone's subsystem to drive the menu, which means there's no way to get them. The way I've approached this kind of problem is to create my own menu painting and handling code and incorporated it into the Canvas. Then, make one Command called 'Menu' and have it invoke your custom menu code.
    I realise this isn't an ideal solution, but it's something.

  • How to recieve key events

    Hi guys,
    in the javax.microedition-package i can't find something like the KeyListener in java.awt.event-package. How can I recieve the Key-char when the user is pressing a key?

    you will find this lisetener in canvas package not in form package

  • Getting Key Events during animation loop

    I'm having a problem recieving Key events during my animation loop. Here is my example program
    import java.awt.*;
    import java.awt.image.BufferStrategy;
    import javax.swing.JPanel;
    import javax.swing.ImageIcon;
    import javax.swing.JFrame;
    import java.util.ArrayList;
    import java.awt.event.*;
    import java.util.Iterator;
    import GAME.graphics.Animation;
    import GAME.sprites.MainPlayer;
    import GAME.util.MapData;
    import GAME.input.*;
    public class ImageTest extends JFrame {
        private static final long DEMO_TIME = 20000;
        private Animation      anim;
        private MainPlayer     mPlayer;
        private MapData               mapData;
        private InputManager      inputManager;
        private GameAction moveLeft;
        private GameAction moveRight;
        private GameAction exit;
        public ImageTest()
         requestFocus();
         initInput();
         setSize(1024, 768);
         setUndecorated(true);
         setIgnoreRepaint(true);
         setResizable(false);
         loadImages();
         anim = new Animation();
            mPlayer = new MainPlayer(anim);
            setVisible(true);
            createBufferStrategy(2);
            animationLoop();
         // load the player images
         private void loadImages()
              // code that loads images...
         // Initialize input controls
         private void initInput() {
            moveLeft = new GameAction("moveLeft");
            moveRight = new GameAction("moveRight");
            exit = new GameAction("exit",
                GameAction.DETECT_INITAL_PRESS_ONLY);
            inputManager = new InputManager(this);
            inputManager.setCursor(InputManager.INVISIBLE_CURSOR);
            inputManager.mapToKey(moveLeft, KeyEvent.VK_LEFT);
            inputManager.mapToKey(moveRight, KeyEvent.VK_RIGHT);
            inputManager.mapToKey(exit, KeyEvent.VK_ESCAPE);
        // Check player input
        private void checkInput(long elapsedTime) {
            if (exit.isPressed()) {
                System.exit(0);
            if (mPlayer.isAlive()) {
                float velocityX = 0;
                if (moveLeft.isPressed()) {
                    velocityX-=mPlayer.getMaxSpeed();
                if (moveRight.isPressed()) {
                    velocityX+=mPlayer.getMaxSpeed();
                mPlayer.setVelocityX(velocityX);
        // main animation loop
        public void animationLoop() {
            long startTime = System.currentTimeMillis();
            long currTime = startTime;
            while (currTime - startTime < DEMO_TIME) {
                long elapsedTime =
                    System.currentTimeMillis() - currTime;
                currTime += elapsedTime;
                checkInput(elapsedTime);
                mPlayer.update(elapsedTime);
                // draw and update screen
                BufferStrategy strategy = this.getBufferStrategy();
                Graphics2D g = (Graphics2D)strategy.getDrawGraphics();
                if (!(bgImage == null))
                     draw(g);
                     g.dispose();
                     if (!strategy.contentsLost()) {
                         strategy.show();
                // take a nap
                try {
                    Thread.sleep(20);
                catch (InterruptedException ex) { }
        public void draw(Graphics g) {
            // draw background
            if (bgImage != null)
                         // draw image
                 g.drawImage(mPlayer.getImage(), (int)mPlayer.getX(), (int)mPlayer.getY(), null);
    }My InputManager implements KeyListener. When running print statements on my Key events, they are not being called until after the animation demo is done running. Can someone help me with getting the Key events to update during the animation loop? Thank you!

    I've used the post from Abuse on the following thread with success. Maybe it will clue you in to what you might be doing wrong:
    http://forum.java.sun.com/thread.jsp?forum=406&thread=498527

  • HTML5 UI is unable to correctly get the information of  key-events .

    I have developed a plug-in for Illustrator CC2014.
    But, The Plug-in UI which was built with HTML5, is unable to correctly get the information of  key-events .
    As problems following.
        0-9 key press       : "keyCode" is "0"
        Shift key press     : "shiftKey"is "false"
        Alt key press        : "altKey"is"false"
    Even if acquired at any timing(keydown, keypress, keyup) symptom occurs.
    In the Windows, you can get the information of key-events is correct at the same implementation.
    In the case of the browser UI, even in the Mac, I can correctly get.
    What causes that can not be acquired key event information is correct on the plug-in?
    Also, If you have any way to get the information of key-events correctly, please let me know.

    Pulluran wrote:
    I tried the event, but it does not resolve.
    In the windows, onKeydownEvent(event) can get the event information correctly.
    in the Mac, the keyevent information was originally can be get.The problem is that the keyevent information was not the correct information.
    "in the Mac, the keyevent information was originally can be get"
    What does that mean?
    "The problem is that the keyevent information was not the correct information."
    The problem seems to be that the event contains no information, keyCode is always zero and shiftKey and altkey are always false.
    What happens if you try
    function onKeydownEvent(obj) {
    var keyCode = (obj.keyCode >= 96 && obj.keyCode <= 105) ? obj.keyCode - 48 : obj.keyCode;
    var inputStr = String.fromCharCode(keyCode);

  • Binding Mouse and Key Events.

    Hi,
    When a user clicks the Ctrl + V the data from the clipboard
    is pasted into the user area. Instead of using this can we do it
    using a mouse click. For now, I am planning to bind the event code
    of these combinations (CTRL + V == 86) to the mouse click. But when
    I tried this I am unable to bind this key event to the mouse event.
    Can anyone help me out for getting out of this problem.
    Regards,
    eodC.

    No, it isn't.
    Kind regards,
      Levi

  • Key event question

    hey everyone...i'm using a key event (below)...and it works...but i am wondering how to recieve an input from a user to see what key they want to assign to that particular menuItem(without doing if statements to test every possible key)...if any one can help me please post
    menuItem1.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_NUMPAD1, ActionEvent.CTRL_MASK));
    thanx Kevin

    no...sry if i didn't explain myself enough...lets say a user wants to make a menu item called menuItem1 change to a different keyEvent. So they open a dialog and type in 1. Is there anyway to make menuItem1 have a keyEvent that is one(or what ever number or letter the user enters)??
    hope that helps a little...kevin

  • Listening Tab Key Event On JTextField

    Hi
    i am unable to listen Tab Key Event on JTextField ....
    tField.addKeyListener(new KeyAdapter()
    public void keyPressed(KeyEvent e)
    if (e.getKeyCode()==e.VK_TAB)
    JOptionPane.showMessageDialog(null,"Tab Pressed");
    else
    JOptionPane.showMessageDialog(null,"Tab Not Pressed");
    When i pressed Tab Key then it dont come in KeyPressed Event ...Actually it go towards next FocusAble component ..
    Any help in this regard.....

    I also Checked it by using
    tField..setFocusTraversalKeysEnabled(false);
    tField.addKeyListener(new KeyAdapter()
    public void keyPressed(KeyEvent e)
    if (e.getKeyCode()==e.VK_TAB)
    JOptionPane.showMessageDialog(null,"Tab Pressed");
    else
    JOptionPane.showMessageDialog(null,"Tab Not Pressed");
    In this case each time e.getKeyCode() returns 0...
    plz help me

  • How to handle Shift+Tab key event

    HI,
    This is Ramesh.I have added KeyListener to JTable. I am handling key events through key codes. But I am
    unable to handling multiple key strokes like Shift+Tab
    Can any one please give me suggestion how can I do it
    Thanks & Regards
    Ramesh K

    i dont know about Key BindingsWhich is why you where given a link to the tutorial in the first response.
    can you please give me suggestion.You've been given the suggestion 3 times. You can decide to learn to write code the way other Swing components are written. Or, you can do it the old way. The choice is up to you.

  • How to disable the F4 Key Event?

    Hi Guys,
    I have written my own FocusManager which allows me to traverse through disabled components. If a user presses the F4 key while the focus is in a disabled JComboBox, the popup becomes activated. Is there any way deactivate the F4 keystroke?
    I have tried:
    event.consume();
    combobox.setPopupVisible(false);
    combobox.hidePopup();
    I also read that F4 is a low-level event maintained by Windows. Is this true? Is there no alternative?
    -Sri :)

    To anyone who may be interested:
    I have tried all available solutions:
    1. hidePopup()
    2. setPopupVisible(false)
    3. unregistering the F4 key event
    4. catching the F4 key event and snubbing it
    I have had no luck with the above solutions. It leads me to believe that F4 key is registered under the windows environment and it is a low-level event.
    -Sri :)

  • Unable to Edit any event in iCal

    I am unable to edit any event in I cal, the only options I have available to me is to accept or decline the event, Help

    Ok cool, I have changed the time displayed to Military 24H in Time and Date setting ... while keeping my International region to Canada ... and iCAl still seems to be working well! Great!
    Again thank you very much! I have recently transitioned from WIN to MAC and this was making me crazy!
    - a.

  • Unable to create new events in iCal

    I updated my iPhone 4 to iOS7, and now when I try to create a new event in iCal, nothing happens. I am able to tap the "+" and enter the event information, but when I tap "Done", no new event appears in the calendar.
    If I, instead, create the event in the Calendar on my PC, the phone syncs with Outlook, and the event appears on the phone's iCal app.
    Why am I suddenly unable to create new events on my phone in iOS7, and how can I fix this issue?

    Thanks! I've noticed the phone has been a bit "clunky" since the update too. Did you experience the same thing & did the hard restart help?

  • Macbook misses some key events for a few seconds

    I have noticed that for last two months or so something strange happens to my Retina MBP. Once in a couple of days it stops responding to some key events. It is like it handles only one keypress out of 4-5. Nothing seems to be wrong with the keyboard and it is not about a particular key or keys. And about 10-15 seconds later everything goes back to normal. I do not see any suspicious messages in the logs, the computer is connected to the power supply...It happens just by itself in the middle of the day, when I am typing.
    Almost looks like some interrupts get lost by the system while it is busy with something else. But I have checked the load level and running processes - nothing interesting there....And whatever it is - it happens during a very short period of time.

    Hi,
    No, I have not returned my MBP yet. In fact, I would rather avoid doing this unless I am convinced if it is a hardware issue. And I do believe it is not. Just recently I have spent some time investigating it and I have found very stroing correlation between the moments when this happens and these messages in the kernel log:
    Jan 13 10:49:54 mbp-wifi kernel[0]: Sandbox: sandboxd(96471) deny mach-lookup com.apple.coresymbolicationd
    Jan 13 10:54:31 mbp-wifi kernel[0]: Sandbox: sandboxd(96499) deny mach-lookup com.apple.coresymbolicationd
    Jan 13 10:54:31 mbp-wifi.home sandboxd[96499] ([96497]): mdworker(96497) deny mach-lookup com.apple.ls.boxd
    Jan 13 10:54:31 mbp-wifi.home sandboxd[96499] ([96498]): mdworker(96498) deny mach-lookup com.apple.ls.boxd
    Jan 13 10:56:32 mbp-wifi.home sandboxd[96504] ([96503]): mdworker(96503) deny mach-lookup com.apple.ls.boxd
    Jan 13 10:56:32 mbp-wifi.home sandboxd[96504] ([96502]): mdworker(96502) deny mach-lookup com.apple.ls.boxd
    And I have also noticed that my Spotlight database gets reconstructed too often, which means it gets corrupted.
    From all this I conclude that it is most likely the software issue and it seems to be linked to spotlight. I saw people reporting similar things. So now I am researching on how to fix it without disabling the spotlight.
    In general, I believe that the quality of Apple software is going down, it is not like 4-5 years ago And Apple does seem to care less and less about it.
    If in your case it happens all the time, not just once in a while, and you see that a particular key has problems - it is possible that we are talking about the different issues and yours might be really about the keyboard.

  • I am unable to recieve media messages via text message and the profile says its not verified. How do i fix this?

    i am unable to recieve media messages via text message and the profile in the settings says its not verified. How do i fix this?

    MMS is a carrier feature.  Contact the carrier to ensure you account is provisioned correctly.

Maybe you are looking for

  • Hi experts pls help me with this materialized view refresh time!!!

    Hi Expeerts , Please clarify my doubt about this materialized view code [\n] CREATE MATERIALIZED VIEW SCHEMANAME.products_mv REFRESH WITH ROWID AS SELECT * from VIEW_TABLE@DATAOPPB; [n] Here i am creating a materialized view named products_mv of the

  • Help with photo collage in Elements 10

    I am new to Photoshop Elements 10. I am trying to create a photo collage, but a window pops up saying "Valid size not available for this creation".  Can someone help me fix this so I can create??

  • Bacth duplication check

    hello, any body please help. my client is using external batch no during order confirmation. but he wants to control the duplicancy of batch no. if there is any duplicancy it should not allow. how can i restrict. pls suggest me. Thanks & Regards Bhak

  • Getting started with 3850 as WLC - Wireless GUI fails

    I have started to look into configuring our 3850 as a WLC I enabled the command wireless mobility controller Then I tried to connect to <switch ip>/wireless I just get a dead page. I configured the wireless management vlan but still no joy What basic

  • My 40 gb iPod doesnt show any text on the screen

    My 40 gb iPod doesnt show any text on the screen. The screen will light up and there is an audible clicking noise when using the navigation wheel. Hooked up to my iTunes the iPod also no longer shows up. Ive tried reseting with no luck. Any help is a