代码很简单，如下所示：

package swt_jface.demo1;

import org.eclipse.swt.SWT;

import org.eclipse.swt.graphics.GC;

import org.eclipse.swt.graphics.Image;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;

public class Main {

public static void main(String[] args) {

Display display = new Display();

Image small = new Image(display, 16, 16);

GC gc = new GC(small);

gc.setBackground(display.getSystemColor(SWT.COLOR_RED));

gc.fillArc(0, 0, 16, 16, 45, 270);

gc.dispose();

Image large = new Image(display, 32, 32);

gc = new GC(large);

gc.setBackground(display.getSystemColor(SWT.COLOR_BLUE));

gc.fillArc(0, 0, 32, 32, 45, 270);

gc.dispose();

Shell shell = new Shell(display);

shell.setText("Small and Large icons");

shell.setImages(new Image[] {small, large});

Shell shell2 = new Shell(display);

shell2.setText("Small icon");

shell2.setImage(small);

shell.open();

shell2.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch())

display.sleep();

}

display.dispose();

}

}

下面是打开子画面的代码：

package swt_jface.demo1;

import org.eclipse.swt.SWT;

import org.eclipse.swt.events.SelectionEvent;

import org.eclipse.swt.events.SelectionListener;

import org.eclipse.swt.graphics.Point;

import org.eclipse.swt.graphics.Rectangle;

import org.eclipse.swt.layout.RowLayout;

import org.eclipse.swt.widgets.Button;

import org.eclipse.swt.widgets.Display;

import org.eclipse.swt.widgets.Shell;

public class DialogShell {

public DialogShell() {

Display display = new Display();

final Shell shell = new Shell(display);

shell.setLayout(new RowLayout());

shell.setSize(500, 200);

final Button openDialog = new Button(shell, SWT.PUSH);

openDialog.setText("Click here to rate this book ...");

openDialog.addSelectionListener(new SelectionListener() {

public void widgetSelected(SelectionEvent e) {

final Shell dialog = new Shell(shell, SWT.DIALOG_TRIM | SWT.APPLICATION_MODAL);

dialog.setLayout(new RowLayout());

final String[] ratings =

new String[] {"Killer!", "Good stuff", "So-so", "Needs work" };

final Button[] radios = new Button[ratings.length];

for (int i = 0; i < ratings.length; i++) {

radios[i] = new Button(dialog, SWT.RADIO);

radios[i].setText(ratings[i]);

}

Button rateButton = new Button(dialog, SWT.PUSH);

rateButton.setText("Rate!");

rateButton.addSelectionListener(new SelectionListener() {

public void widgetSelected(SelectionEvent e) {

for (int i = 0; i < radios.length; i++)

if (radios[i].getSelection()) openDialog.setText("Rating: " + ratings[i]);

dialog.close();

}

public void widgetDefaultSelected(SelectionEvent e) {

}

});

dialog.pack();

dialog.open();

Rectangle shellBounds = shell.getBounds();

Point dialogSize = dialog.getSize();

dialog.setLocation(shellBounds.x + (shellBounds.width - dialogSize.x) / 2, shellBounds.y + (shellBounds.height - dialogSize.y) / 2);

}

public void widgetDefaultSelected(SelectionEvent e) {

}

});

shell.open();

while (!shell.isDisposed()) {

if (!display.readAndDispatch()) {

display.sleep();

}

}

display.dispose();

}

public static void main(String[] args) {

new DialogShell();

}

}