Need help.
The problem is Internal Frames do show up properly.
I have extended JDesktopPane and i "add" it to JFrame's contentPane. My
extended class MyDesktopPane is added 2 JPanels. And one of them has a button
(and the class is the listener for its actions) to display an internal frame.
//class defination:
class MyDesktopPane extends JDesktopPane implements ActionListener {}
The code when run as a standalone, just adding the MyDesktopPane to the
contentPane directly in the main by saying :
// method of MyDesktopPane
public static void main(String args[]){
JFrame f = new JFrame();
f.setVisible(true);
f.getContentPane().add(new MyDesktopPane());
f.setExtendedState(JFrame.MAXIMIZED_BOTH);
}
works well and displays the Internal Frame properly as desired.
the code written for the buttons actionListener is as follows:
// method of MyDesktopPane
public void actionPerformed(ActionEvent ae){
if(ae.getActionCommand().equals("VITAL DATA")){
if(internalWindow==null){
createInternalWindow();
}
internalWindow.setVisible(true);
}
}
I construct the Internal Frame when the button is clicked:
// method of MyDesktopPane
public void createInternalWindow(){
internalWindow = new JInternalFrame("Vital Data!!",
false, //resizable
false, //not closable
false, //not maximizable
false); //iconifiable
//vdp is constructed in constructor of MyDesktopPane()
internalWindow.setContentPane(vdp);
internalWindow.setPreferredSize(vdp.getPreferredSize());
add(internalWindow);
// this panel is added directly to the JDesktopPane as the class
extends the JDesktopPane
}
But when i do this using a menu driven JFrame it doesn't though method adopted
is the same.
What has gone wrong in programming. Please help.
Shomal
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