Re: No buttons and minimized at a upper-left corner

Jack wrote:
Hi,
package com.etc.gui;

import java.awt.*;
import java.awt.image.*;
import javax.imageio.ImageIO;
import java.io.*;
import java.util.*;
import java.awt.event.*;

public class LPRFrame extends Frame {

public LPRFrame() {

MenuBar menuBar = new MenuBar();
Menu menuFile = new Menu();
MenuItem menuFileLoad = new MenuItem();

// Menu menuLearn = new Menu();
// MenuItem menuLearnLearn = new MenuItem();

Menu menuImg = new Menu();

menuFile.setLabel("File");
menuFileLoad.setLabel("Load Image");

menuImg.setLabel("Image/Data");

menuFile.add(menuFileLoad);

menuBar.add(menuFile);
menuBar.add(menuImg);

setTitle("LPR");
setMenuBar(menuBar);
setSize (new Dimension (640, 480));

}
}

With main at somewhere else

I assume your problem is that the above code (plus some you omitted) causes a window to be displayed at minimum size and with no content visible?

I don't use AWT (why dont you use Swing?) but the following "works" under JDK 1.5 after I implemented a minimal main()


import java.awt.Dimension;
import java.awt.Frame;
import java.awt.Menu;
import java.awt.MenuBar;
import java.awt.MenuItem;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class LPRFrame extends Frame {

public LPRFrame() {

Menu menuFile = new Menu("File");
MenuItem menuFileLoad = new MenuItem("Load Image");
menuFile.add(menuFileLoad);

Menu menuImg = new Menu("Image/Data");

MenuBar menuBar = new MenuBar();
menuBar.add(menuFile);
menuBar.add(menuImg);

setMenuBar(menuBar);
setTitle("LPR");
setSize(new Dimension(640, 480));
}

public static void main(String[] args) {
LPRFrame frame = new LPRFrame();
frame.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent evt) {
System.exit(0);
}
});
frame.setVisible(true);
}
}

I also put the menu labels into the constructors to save a few lines of source code.
.