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From: "Jeff Higgins" <jeff.higgins@THRWHITE.remove-dii-this>
Subject: Re: MDI Application Help
Message-ID: <P8mLh.245$IO2.196@newsfe04.lga>
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Date: Wed, 27 Apr 2011 15:32:03 GMT
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"Noobie & Newbie" <jimmychankokchern1@msn.com> wrote in message 
news:1174023150.166496.158950@e65g2000hsc.googlegroups.com...
> Hi guys, I am building a MDI application. In my MainClass(Parent),
> there is a toolbar which contain many Jbutton. When I click
> New(JButton in Toolbar), it will show a new JInternalFrame(Child) into
> the JDesktopPanel. When i click Add(another JButton in ToolBar), it
> will insert a pic into the JInternalFrame. The problem lies with that
> when I call two JInternalFrame out (Frame_A & Frame_B), I am only able
> to Insert pic in Frame_B since it is call out later. I know the
> problem lies within this code of lines
>
> <code>
> public App app;
>
> private void newApp( java.awt.event.ActionEvent evt) // button new
> event
> {
>  app = new App();
>  app.setVisible(true);
>  jDesktopPane1.add(app);
> }
> </code>
> It overwrite Frame_A when Frame_B is created
> How can I solve this problem.
>
> Thanks.
>

I may be way off base here but...
maybe use JInternalFrame.setSelected(true) at some point.

from InternalFrameDemo.java
http://java.sun.com/docs/books/tutorial/uiswing/components/examples/index.html#InternalFrameDemo

 //Create a new internal frame.
    protected void createFrame() {
        MyInternalFrame frame = new MyInternalFrame();
        frame.setVisible(true); //necessary as of 1.3
        desktop.add(frame);
        try {
            frame.setSelected(true);
        } catch (java.beans.PropertyVetoException e) {}
    }

I'm sure you've seen the 'How to Use Internal Frames' tutorial.
http://java.sun.com/docs/books/tutorial/uiswing/components/internalframe.html

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