Re: Urgent : Pb with Event Dispatching - very important - Article 12037 - go-pugleaf

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Re: Urgent : Pb with Event Dispatching - very important

#12037

From: Emil Lefkof
Date: Thu, 25 Feb 1999 00:00

58 lines
2916 bytes

Make sure you have menu items in the MenuBar.  i was having the same
problem.  As soon as you have menu items with in the menubar this exception
goes away.  Don't ask me why.

Hope it helps.
    Anne JANSSENS wrote in message <79v54o$jfk12@forums.borland.com>...
    Here is my problem :

    I have a Jframe with a JMenuBar and at the center, I have a JPanel in
witch I have add some JTextField.

    I have implemented a keyListener for each JTextField, I do some stuff in
the keyPressed method,
    and I call evt.consume()

    I have this message that appears and nothing is done in my keyPressed
method :

    Exception occurred during event dispatching:
    java.lang.NullPointerException
     at com.sun.java.swing.JMenuBar.bindingForKeyStrokeRecursive(Compiled
Code)
     at com.sun.java.swing.JMenuBar.bindingForKeyStroke(Compiled Code)
     at com.sun.java.swing.JComponent.processKeyBinding(Compiled Code)
     at
com.sun.java.swing.JComponent.processKeyBindingsForAllComponents(Compiled
Code)
     at
com.sun.java.swing.JComponent.processKeyBindingsForAllComponents(Compiled
Code)
     at
com.sun.java.swing.JComponent.processKeyBindingsForAllComponents(Compiled
Code)
     at
com.sun.java.swing.JComponent.processKeyBindingsForAllComponents(Compiled
Code)
     at com.sun.java.swing.JComponent.processKeyBindings(Compiled Code)
     at com.sun.java.swing.JComponent.processKeyEvent(Compiled Code)
     at java.awt.Component.processEvent(Compiled Code)
     at java.awt.Container.processEvent(Compiled Code)
     at java.awt.Component.dispatchEventImpl(Compiled Code)
     at java.awt.Container.dispatchEventImpl(Compiled Code)
     at java.awt.Component.dispatchEvent(Compiled Code)
     at java.awt.LightweightDispatcher.processKeyEvent(Compiled Code)
     at java.awt.LightweightDispatcher.dispatchEvent(Compiled Code)
     at java.awt.Container.dispatchEventImpl(Compiled Code)
     at java.awt.Window.dispatchEventImpl(Compiled Code)
     at java.awt.Component.dispatchEvent(Compiled Code)
     at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)


    I'am not sure but I think it is a focus problem because a focus listener
is called before the keyListener !

    Can anyone help me, it's very important for my work, and with this
message I don't see what is wrong !

    Thanks a lot for your help, :)Anne

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From: "Emil Lefkof" <elefkof@fcg.com>
Subject: Re: Urgent : Pb with Event Dispatching - very important
Date: 1999/02/25
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