Help with key event

hi everyone i need some help. i have to write an java application thatcreates a panel with three labels and three key events to call upon different methods. i try to creat a JFrame but have problems. anyone can help?
Thanks

public class MyClass extends JFrame{
public MyClass(){
getContentPane().add( new Label("One") );
getContentPane().add( new Label("Two") );
getContentPane().add( new Label("Three") );
setSize(400,400);
setVisible(true);
public static void main(String[] args){
MyClass myclass = new MyClass();
public static void main is the starting point of a program.
When the frame is created using
MyClass myclass = new MyClass();
The control goes to the constructor where you can add three labels.
You can add three methods to MyClass and implement KeyListener in MyClass to build upon it.

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Help with Keyboard Event

Hi, I am designing a drum machine in flash pro Cs6 actionscript 3.0 and I am trying to add a keyboard event that will trigger a button event that I have all ready created, I can create the event to play the sound but this is not what I want, can I call the click event so the button will move on the key event triggering the sound, here is an example of one of my buttons code... btn, thank you if anyone can help.
import flash.events.KeyboardEvent;
playsound2.fla
playsound with extra functionality:
textbox added.
Displays ID3 info of the sound
btn.addEventListener(MouseEvent.CLICK, playSomeSound);
function playSomeSound(e:MouseEvent)
          var req:URLRequest = new URLRequest("Savage.mp3");
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var ba:ByteArray = new ByteArray();
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Thanks, this was the code I added in the end and it works nicely, It covers my sound and id3 aswell as Im displaying lcd text in a dynamic text box.
stage.addEventListener(KeyboardEvent.KEY_DOWN, btndownKey);
function btndownKey(event:KeyboardEvent)
          if (event.keyCode == 83)
                    var url:String = "Savage.mp3";
                    var request:URLRequest = new URLRequest(url);
                    var s:Sound = new Sound();
                    s.addEventListener(Event.COMPLETE, completeHandler);
                    s.addEventListener(Event.ID3, onID3Info);
                    s.load(request);

Object Movement with Key Events

Hi everybody!
Im trying to move an object over the screen with keyboard buttons. The problem I have come across with is that I would like to use the right button to move right, up button to move forward, etc. but I cant push, for example, right and up buttons at the same time to make a diagonal movement. How can I solve this?
Thank you and regards.

I added key events to a sequence and than check them in the program.
Something like this:
class Car extends CustomNode {
    var keys:KeyCode[];
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        ImageView {
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            x: -w
            y: -h
            image: Image { url: "{__DIR__}car.png"}
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                insert e.code into keys;
                if(e.code == KeyCode.VK_UP){
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                }else if(e.code == KeyCode.VK_DOWN){
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                }else if(e.code == KeyCode.VK_LEFT){
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                }else if(e.code == KeyCode.VK_RIGHT){
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}

Help with combobox event handling

hey techies
does knw any1 tutorial or where any URL which helps me adding event handling to combobox
iam new at event handling
i tried
jc1.addItemListener(this);
public void itemStateChanged(ItemEvent event)
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          System.out.println("hello");
     }is this way correct to specify event handling in combobox
i tired this iam getting NPE like this
Exception in thread "main" java.lang.NullPointerException
at FinalMobile.<init>(FinalMobile.java:213)
at FinalMobile.main(FinalMobile.java:740)
plz jst let me knw and dnt tell me to refer swing tutorial i have been reffering it
any help is appreciated

does knw any1 tutorial or where any URL which helps me adding event handling to comboboxExcuse me, I've told you at least 4 times now to download and read the Swing tutorial which has all this information with working examples. I even provided you with the download link.
How do you have the nerve to say you can't find any tutorial?

Probelm with key events

Hi all
I am trying to open a swing form from a menu on a Frame object
On the frame I have a Canvas3D
everything is going well the canvas3d read my key events and I can walk gladly in my universe
untill I am opening JFrame and do some stuff on it (changeing values in text fields)
Hiding the Jframe and trying to keep moveing in my universe is not working any more any ideas???

I checked it more closly and found out that the I do get the events and the behvior do act on them but I see nothing on the screen help....

First Mac-need help with an "event"

Hi:
   After 3 days of busy activity with no freeze ups, I was feeling pretty confident.  However, late last night I ran into an "event" that eventually required me to reload Tiger.
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   (2) I was able to tab through those programs running and with a command-Q quit out of those running...still no effect on any mouse clicks....no problem moving the mouse and it would highlight top left corner buttons, but no effect if I attempted to minimize or exit.
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Questions:
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Thanks for your help!

Many thanks for the suggestion and the giving me some hope that this is not the dreaded freeze issue!
I forgot to mention perhaps one important bit of information: There were two Finder "windows" that were present when my "event" occurred and each time I rebooted, these same two Finder windows reappeared and my mouse was unable to move them or close them or execute any command line operations.
Not sure if this changes the story about it being a mouse software related error or not, but I found it strange that on hard reboots the machine came back with the same two windows of information.

Need help with Buttons/Events

HI
Here is what I am doing. I am creating an "operations"
calendar for my workplace. So far I have been successful with
creating the page, inserting links, tags, images etc.....
But now I want to add an Event button - where once the button
is clicked - it will launch a script on my UNIX server.
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Any help would be greatly appreciated

Hey man, I 've done some correction, and it seems work, why don't you try the code to see if it is what you want.
import java.awt.*;
import java.applet.*;
import java.awt.event.*;
public class ComplexMenu11 extends Applet implements ActionListener {
Button open, close;
MenuFrame f;
public void init() {
open = new Button("Open");
add(open);
open.addActionListener(this);
close = new Button("Close");
add(close);
close.addActionListener(this);
f = new MenuFrame("A Complex menu");
f.setSize(200, 200);
f.show();
public void actionPerformed(ActionEvent evt) {
if(evt.getSource() == open) {
if(f.isShowing())
f.show();
}else{
if(!f.isShowing())
f.hide();
class MenuFrame extends Frame implements ActionListener{ //and implements here too
Font font;
Label l;
int fontsize;
//MessageDialog md;
MenuBar mb = new MenuBar();
Menu m1 = new Menu("Colours");
MenuFrame(String name) {
super(name);
m1.add(new MenuItem("White"));
m1.add(new MenuItem("Light grey"));
m1.add(new MenuItem("Yellow"));
Menu m2 = new Menu("Font");
m2.add(new MenuItem("10"));
m2.add(new MenuItem("12"));
m2.add(new MenuItem("14"));
m2.add(new MenuItem("16"));
m2.add(new MenuItem("18"));
m2.add(new MenuItem("Message"));
mb.add(m1);
mb.add(m2);
setMenuBar(mb);
m1.addActionListener(this); //Add listener here
l = new Label("A frame demonstration", Label.CENTER);
add("South", l);
//md = new MessageDialog(this,"Name",true);
public void actionPerformed(ActionEvent evt) {
if(evt.getSource() instanceof MenuItem) {
//fontsize = 18;
String label = evt.getActionCommand();
if(label.equals("White")) {
//setBackground(Color.white);
System.out.println("This is the white point");
}

JTree traversal with key events

I am looking for any classes available for traversing nodes in Jtree based on the input given through keyboard matching with nearest name in the tree being displayed. This is similar to the feature we have in windows explorer where based on the name we type it selects the nearest node in the tree taking into consideration the expanded paths.
Thank you in anticipation,
Srikanth

What exactly you want to do.
Have a look at my code, this is what I did a while ago. This may a good start for you.
tree.addKeyListener(new java.awt.event.KeyAdapter() {
         public void keyPressed(KeyEvent e) {
            tree_KeyReleased(e);
    * JTree Key Released Functionality
    * @param e KeyEvent
   private void tree_KeyReleased(KeyEvent e) {
      try {
      MouseEvent me = new MouseEvent(tree, MouseEvent.MOUSE_RELEASED, 0, 0, 0, 0, 0, false);
      int keyCode = e.getKeyCode();
      // Get the Tree Path
      TreePath selPath = tree.getSelectionPath();
      if (keyCode == e.VK_DELETE) { //KeyCode - 127
         removeSelectedNode();
      else if (keyCode == e.VK_ADD) { // Key Code - 107
         tree.expandPath(selPath);
      else if (keyCode == e.VK_SUBTRACT) { // Key Code 109
         tree.collapsePath(selPath);
      else if (keyCode == e.VK_ENTER) {
         tree_mouseReleased(me);
      else {
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      //System.out.println("Null");
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Need help with custom event from Main class to an unrelated class.

Hey guys,
I'm new to Flash and not great with OOP. I've made it pretty far with google and lurking, but I've been pulling my hair out on this problem for a day and everything I try throws an error or simply doesn't hit the listener.
I'm trying to get my Main class to send a custom event to an unrelated class called BigIcon. The rest of the code works fine, it's just the addEventListener and dispatchEvent that isn't working.
I've put in the relevant code in below. Let me know if anything else is needed to troubleshoot. Thank you!
Main.as
package
    import flash.display.MovieClip;
    import flash.events.MouseEvent;
    public class Main extends MovieClip
        var iconLayer_mc:MovieClip = new MovieClip();
        public function Main()
            Spin_btn.addEventListener(MouseEvent.CLICK,fl_MouseClickHandler);
            addChildAt(iconLayer_mc,0);
            placeIcons();
        function placeIcons():void
            var i:int;
            var j:int;
            for (i = 0; i < 4; i++)
                for (j = 0; j < 5; j++)
                    //iconString_array has the names of illustrator objects that have been converted to MovieClips and are in the library.
                    var placedIcon_mc:BigIcon = new BigIcon(iconString_array[i][j],i,j);
                    iconLayer_mc.addChild(placedIcon_mc);
        function fl_MouseClickHandler(event:MouseEvent):void
            dispatchEvent(new Event("twitchupEvent",true));
BigIcon.as
package
    import flash.display.MovieClip;
    import flash.events.Event;
    import flash.utils.getDefinitionByName;
    public class BigIcon extends MovieClip
        private var iconImage_str:String;
        private var iconRow_int:int;
        private var iconColumn_int:int;
        public function BigIcon(iconImage_arg:String, iconRow_arg:int, iconColumn_arg:int)
            iconImage_str = iconImage_arg;
            iconRow_int = iconRow_arg;
            iconColumn_int = iconColumn_arg;
            this.addEventListener(Event.ADDED_TO_STAGE, Setup);
        function Setup(e:Event)
            this.y = iconRow_int;
            this.x = iconColumn_int;
            var ClassReference:Class = getDefinitionByName(iconImage_str) as Class;
            var thisIcon_mc:MovieClip = new ClassReference;
            this.addChild(thisIcon_mc);
            addEventListener("twitchupEvent", twitchUp);
        function twitchUp(e:Event)
            this.y += 10;

Ned Murphy wrote:
You should be getting an error for the Main.as class due to missing a line to import the Event class...
import flash.events.Event;
My apologies, I should attempt to compile my example code before I ask for help...
Alright, this compiles, gives me no errors, shows my 'book' and 'flowers' icons perfectly when ran, and prints 'addEventListener' to the output window as expected. I get no errors when I press the button, 'dispatchEvent' is output (good), but the 'twitchUp' function is never called and 'EventTriggered' is never output.
How do I get the 'twitchUp' event to trigger?
Main.as
package
    import flash.display.MovieClip;
    import flash.events.MouseEvent;
    import flash.events.*;
    public class Main extends MovieClip
        var iconLayer_mc:MovieClip = new MovieClip();
        var iconString_array:Array = new Array(2);
        public function Main()
            Spin_btn.addEventListener(MouseEvent.CLICK,fl_MouseClickHandler);
            addChildAt(iconLayer_mc,0);
            buildStringArray();
            placeIcons();
        function buildStringArray():void
            var i:int;
            var j:int;
            for (i = 0; i < 2; i++)
                iconString_array[i] = new Array(3);
                for (j = 0; j < 3; j++)
                    if (Math.random() > .5)
                        //'flowers' is the name of an illustrator object that has been converted to a MovieClip and is in the library
                        iconString_array[i][j] = "flowers";
                    else
                        //'book' is the name of an illustrator object that has been converted to a MovieClip and is in the library
                        iconString_array[i][j] = "book";
        function placeIcons():void
            var i:int;
            var j:int;
            for (i = 0; i < 2; i++)
                for (j = 0; j < 3; j++)
                    //iconString_array has the names of illustrator objects that have been converted to MovieClips and are in the library.
                    var placedIcon_mc:BigIcon = new BigIcon(iconString_array[i][j],i*50,j*50);
                    iconLayer_mc.addChild(placedIcon_mc);
        function fl_MouseClickHandler(event:MouseEvent):void
            dispatchEvent(new Event("twitchupEvent",true));
            trace("dispatchEvent");
BigIcon.as
package
    import flash.display.MovieClip;
    import flash.events.*;
    import flash.utils.getDefinitionByName;
    public class BigIcon extends MovieClip
        private var iconImage_str:String;
        private var iconRow_int:int;
        private var iconColumn_int:int;
        public function BigIcon(iconImage_arg:String, iconRow_arg:int, iconColumn_arg:int)
            iconImage_str = iconImage_arg;
            iconRow_int = iconRow_arg;
            iconColumn_int = iconColumn_arg;
            this.addEventListener(Event.ADDED_TO_STAGE, Setup);
        function Setup(e:Event)
            this.y = iconRow_int;
            this.x = iconColumn_int;
            var ClassReference:Class = getDefinitionByName(iconImage_str) as Class;
            var thisIcon_mc:MovieClip = new ClassReference;
            this.addChild(thisIcon_mc);
            addEventListener("twitchupEvent", twitchUp);
            trace("addEventListener");
        function twitchUp(e:Event)
            this.y += 10;
            trace("EventTriggered");
Output:
[SWF] Untitled-1.swf - 40457 bytes after decompression
addEventListener
addEventListener
addEventListener
addEventListener
addEventListener
addEventListener
dispatchEvent
[UnloadSWF] Untitled-1.swf
Test Movie terminated.

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Message was edited by: pavelmagur

Help. Key Event. Gui.

hi guys, i have a small problem. i have a form with textfields and buttons... there are two buttons particularly labeled "Enter" and "Cancel".
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...here are two buttons particularly labeled "Enter" and "Cancel".
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Message was edited by:
aybhave

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Help with key event

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