Name: mc57594 Date: 06/04/97


I have found the following problem under NT 4.0 using
jdk1.1.1 and jdk 1.1.2. When I create a Frame and set the
Layout to BorderLayout and add a MenuBar, the Frame
does not compute the preferred size correctly. It seems
to not take into account the height of the menu bar.
The following short program demonstrates this. Notice
that it works perfectly if you comment out the setMenuBar
statement.

/* menuTest.java
*/
import java.awt.*;

class menuTest extends Frame {
public menuTest() {
setLayout(new BorderLayout());
setBackground(SystemColor.control);
add("North",new Button("One"));
add("Center",new Button("Two"));

MenuBar menu = new MenuBar();
Menu top = new Menu("Buttons");
top.add(new MenuItem("One"));
top.add(new MenuItem("Two"));
top.add(new MenuItem("Three"));
menu.add(top);
setMenuBar(menu);

setSize(getPreferredSize());
pack();
}

public static void main(String args[]) {
menuTest run = new menuTest();
run.show();
}
}


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Another report:

// BorderLayout does not take Menubar into account
//
// The button is displayed BEHIND the menubar
// instead of BELOW it.
// I guess it's a bug in the NT implementation
// of the Frame peer...

import java.awt.*;

public class mytest {
  public static void main(String[] argv) {
    Frame f = new Frame("MYTEST");
    MenuBar mb = new MenuBar();
    Menu file = new Menu("File");
    mb.add(file);
    f.setMenuBar(mb);
    Button b1 = new Button("Button 1");
    f.add(b1,"South");
    // Uncomment next line to make it work...
    // f.setSize(100,100);
    f.pack();
    f.show();
  }
}

brian.klock@eng 1997-11-10
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Another report's test case:

import java.awt.*;

public class Test
{
    public static void main(String[] args)
    {
        Frame toplevel = new Frame("MenuBar Test Frame");
        toplevel.setLayout(new BorderLayout()); // especially obvious here
        MenuBar menubar = new MenuBar();
        Menu filemenu = new Menu("File");
        menubar.add(filemenu);
        toplevel.setMenuBar(menubar);
        Button button = new Button("Test");
        toplevel.add("South",button);
        toplevel.pack();
        toplevel.show();
    }
}

brian.klock@eng 1997-11-13
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