CanvasControlAdd.java Source code

Introduction

Here is the source code for CanvasControlAdd.java

Source

import org.eclipse.swt.SWT;
import org.eclipse.swt.events.PaintEvent;
import org.eclipse.swt.events.PaintListener;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Canvas;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class CanvasControlAdd {
    public static void main(String[] args) {
        Display display = new Display();
        Shell shell = new Shell(display);
        shell.setText("Canvas Example");
        shell.setLayout(new FillLayout());

        Canvas canvas = new Canvas(shell, SWT.NONE);

        Button button = new Button(canvas, SWT.PUSH);
        button.setBounds(10, 10, 300, 40);
        button.setText("You can place widgets on a canvas");

        canvas.addPaintListener(new PaintListener() {
            public void paintControl(PaintEvent e) {
                Rectangle rect = ((Canvas) e.widget).getBounds();
                e.gc.setForeground(e.display.getSystemColor(SWT.COLOR_RED));
                e.gc.drawFocus(5, 5, rect.width - 10, rect.height - 10);
                e.gc.drawText("You can draw text directly on a canvas", 60, 60);
            }
        });

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