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JDesktopPane background

Posted on 2004-04-14
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Last Modified: 2009-02-08
Hi,

What I want is a JFrame of size(1024, 768);
i can setJMenuBar of the frame, and then I create a JToolBar and add it to the NORTH of the ContentPane.

I add a JLabel in the CENTER and the label simply contains an image (so it looks as if it is the background).

No i want to add InternalFrame. However they can only be added to a JDesktopPane.
there fore i created a JDesktopPane and set it as the contentPane of the JFrame.

However the layout of the desktopPane is null... if i set it to BorderLayout, then the internal frames dont minimize.
if i let the layout to null, then I cant see the background image, and the ToolBar is not seen also.

So is there any help I can get, so that I may add these things:

1. A JMenuBar.
2. A JToolBar at the NORTH (non-floatable).
3. A Background Image of the entire frame.
4. Internal frames (5 - 10 of them).

Thanks.
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Question by:glottis
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12 Comments
 
LVL 37

Expert Comment

by:zzynx
ID: 10821668
A JDeskTopPane is a JLayeredPane.
I guess you can play with the different layers.
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LVL 9

Expert Comment

by:mmuruganandam
ID: 10821669
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LVL 37

Expert Comment

by:zzynx
ID: 10821682
see http://java.sun.com/developer/qow/archive/49/index.html

where you can read:

JDesktopPane is a JLayeredPane. Add a JLabel with the ImageIcon using

            desktopPane.add(child, JLayeredPane.FRAME_CONTENT_LAYER)

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Expert Comment

by:mmuruganandam
ID: 10821693

For setting up a image background,

// Note 11.
JDesktopPane desktop = new JDesktopPane();
JInternalFrame frA = makeInternalFrame();
desktop.add(frA); // Note 12.
getContentPane().add(desktop); // Note 13.
getContentPane().getGraphics().drawImage(---------) // add this line



Regards,
Muruga
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Author Comment

by:glottis
ID: 10825748
zzynx:
that option didnt help. It didnt show me the Image.

mmuruganandam:
when i do a getContentPane().getGraphics() it returns me null
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Author Comment

by:glottis
ID: 10825832
public MyFrame() {
  super("My Frame");
  desktop = new JDesktopPane();
  desktop.setDragMode(JDesktopPane.LIVE_DRAG_MODE);
  setContentPane(desktop);
 
  desktop.add(new JLabel("Hello, World"), JLayeredPane.FRAME_CONTENT_LAYER);
 
  setDefaultCloseOperation(EXIT_ON_CLOSE);
  setResizable(false); setSize(1024, 768);
  setVisible(true);
}

it isnt showing me Hello, World.
i can add internal frames easily.

JDesktopPane's layout is null.
do I have to setBounds of the JLabel ???
i think that is why it is not showing me.
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LVL 37

Expert Comment

by:zzynx
ID: 10830738
>> that option didnt help. It didnt show me the Image.
Sorry.
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Author Comment

by:glottis
ID: 10858037
ok figured my problem.

as the layout of JDesktopPane is null, the added label (or any other component) will not be visible, as its bounds are not set.

thanks anyway.
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LVL 9

Expert Comment

by:mmuruganandam
ID: 10858048
Delete or close the question... if you are done with this question
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LVL 2

Author Comment

by:glottis
ID: 10858092
ive already requested it in the Community_Support,
thanks.
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