CanvasTranverseEvent.java Source code

Introduction

Here is the source code for CanvasTranverseEvent.java

Source

import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Event;
import org.eclipse.swt.widgets.Listener;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

public class CanvasTranverseEvent {

    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);

        final Canvas c = new Canvas(shell, SWT.BORDER);
        c.setBounds(10, 50, 100, 32);
        c.addListener(SWT.Traverse, new Listener() {
            public void handleEvent(Event e) {
                switch (e.detail) {
                /* Do tab group traversal */
                case SWT.TRAVERSE_ESCAPE:
                    System.out.println("SWT.TRAVERSE_ESCAPE");
                    break;
                case SWT.TRAVERSE_RETURN:
                case SWT.TRAVERSE_TAB_NEXT:
                    System.out.println("SWT.TRAVERSE_TAB_NEXT");
                    break;
                case SWT.TRAVERSE_TAB_PREVIOUS:
                case SWT.TRAVERSE_PAGE_NEXT:
                case SWT.TRAVERSE_PAGE_PREVIOUS:
                    e.doit = true;
                    break;
                }
            }
        });

        Text t = new Text(shell, SWT.SINGLE | SWT.BORDER);
        t.setBounds(10, 85, 100, 32);

        c.setFocus();
        shell.setSize(200, 200);
        shell.open();
        while (!shell.isDisposed()) {
            if (!display.readAndDispatch())
                display.sleep();
        }
        display.dispose();
    }
}