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Thread: Cannot add MenuBar to Frame on Mac OS

  1. #1
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    Unhappy Cannot add MenuBar to Frame on Mac OS

    I am trying to add a menubar to a frame, when i execute the following program on Windows platform then i get the correct output where as the menubar does not appear in the frame if i execute it on Mac OS!!

     
    import java.awt.*;
    import java.awt.event.*;
    public class menuDemo extends Frame implements WindowListener{
    MenuBar mb;
    Menu m1,m2,m3;
    MenuItem mi1,mi2,mi3,mi4;
    menuDemo(){
    setLayout(new FlowLayout());
    setSize(500,500);
    mb=new MenuBar();
    m1=new Menu("File");
    m2=new Menu("New");
    m3=new Menu("Save");
    mi1=new MenuItem("one");
    mi2=new MenuItem("two");
    mi3=new MenuItem("three");
    mi4=new MenuItem("Four");
    Button b=new Button("hell");
    add(b);
    m1.add(mi1);
    m1.add(mi2);
    m2.add(mi3);
    m3.add(mi4);
    mb.add(m1);
    mb.add(m2);
    mb.add(m3);
    setMenuBar(mb);
    addWindowListener(this);
    setVisible(true);
    }
    public static void main(String ar[]){
    new menuDemo();
    }
    public void windowClosed(WindowEvent we){}
    public void windowClosing(WindowEvent we){
    dispose();
    }
    public void windowOpened(WindowEvent we){}
    public void windowActivated(WindowEvent we){}
    public void windowDeactivated(WindowEvent we){}
    public void windowIconified(WindowEvent we){}
    public void windowDeiconified(WindowEvent we){}
    }


  2. #2
    Administrator copeg's Avatar
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    Default Re: Cannot add MenuBar to Frame on Mac OS

    a) Any reason you are using AWT rather than Swing (same components with the 'J' prefix). b) Create your GUI on the EDT by dispatching its creation to SwingUtilities.invokeAndWait in the main method c) Call pack() on the JFrame to pack all the components.

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