SWTMenuExample.java Source code

Introduction

Here is the source code for SWTMenuExample.java

Source

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.events.SelectionListener;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Menu;
import org.eclipse.swt.widgets.MenuItem;
import org.eclipse.swt.widgets.Shell;

public class SWTMenuExample {

    Display display;

    Shell shell;

    Menu menuBar, fileMenu, helpMenu;

    MenuItem fileMenuHeader, helpMenuHeader;

    MenuItem fileExitItem, fileSaveItem, helpGetHelpItem;

    Label label;

    public SWTMenuExample() {

        display = new Display();
        shell = new Shell(display);
        shell.setText("Menu Example");
        shell.setSize(300, 200);

        label = new Label(shell, SWT.CENTER);
        label.setBounds(shell.getClientArea());

        menuBar = new Menu(shell, SWT.BAR);
        fileMenuHeader = new MenuItem(menuBar, SWT.CASCADE);
        fileMenuHeader.setText("&File");

        fileMenu = new Menu(shell, SWT.DROP_DOWN);
        fileMenuHeader.setMenu(fileMenu);

        fileSaveItem = new MenuItem(fileMenu, SWT.PUSH);
        fileSaveItem.setText("&Save");

        fileExitItem = new MenuItem(fileMenu, SWT.PUSH);
        fileExitItem.setText("E&xit");

        helpMenuHeader = new MenuItem(menuBar, SWT.CASCADE);
        helpMenuHeader.setText("&Help");

        helpMenu = new Menu(shell, SWT.DROP_DOWN);
        helpMenuHeader.setMenu(helpMenu);

        helpGetHelpItem = new MenuItem(helpMenu, SWT.PUSH);
        helpGetHelpItem.setText("&Get Help");

        fileExitItem.addSelectionListener(new fileExitItemListener());
        fileSaveItem.addSelectionListener(new fileSaveItemListener());
        helpGetHelpItem.addSelectionListener(new helpGetHelpItemListener());

        shell.setMenuBar(menuBar);
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }

    class fileExitItemListener implements SelectionListener {
        public void widgetSelected(SelectionEvent event) {
            shell.close();
            display.dispose();
        }

        public void widgetDefaultSelected(SelectionEvent event) {
            shell.close();
            display.dispose();
        }
    }

    class fileSaveItemListener implements SelectionListener {
        public void widgetSelected(SelectionEvent event) {
            label.setText("Saved");
        }

        public void widgetDefaultSelected(SelectionEvent event) {
            label.setText("Saved");
        }
    }

    class helpGetHelpItemListener implements SelectionListener {
        public void widgetSelected(SelectionEvent event) {
            label.setText("No worries!");
        }

        public void widgetDefaultSelected(SelectionEvent event) {
            label.setText("No worries!");
        }
    }

    public static void main(String[] args) {
        SWTMenuExample menuExample = new SWTMenuExample();
    }
}