学步园

通过给shell添加SWT.Close事件

shell.addListener(SWT.Close, new Listener() {
   public void handleEvent(Event event) {
    int style = SWT.APPLICATION_MODAL | SWT.YES | SWT.NO;
    MessageBox messageBox = new MessageBox(shell, style);
    messageBox.setText("Information");
    messageBox.setMessage("Close the shell?");
    event.doit = messageBox.open() == SWT.YES;
   }
  });

完整示例如下：

package test.aa;</p> <p>/*<br /> * Shell example snippet: prevent a shell from closing (prompt the user)<br /> *<br /> * For a list of all SWT example snippets see<br /> * http://dev.eclipse.org/viewcvs/index.cgi/%7Echeckout%7E/platform-swt-home/dev.html#snippets<br /> */<br /> import org.eclipse.swt.SWT;<br /> import org.eclipse.swt.widgets.Display;<br /> import org.eclipse.swt.widgets.Event;<br /> import org.eclipse.swt.widgets.Listener;<br /> import org.eclipse.swt.widgets.MessageBox;<br /> import org.eclipse.swt.widgets.Shell;</p> <p>public class Snippet99 {</p> <p> public static void main(String[] args) {<br /> Display display = new Display();<br /> final Shell shell = new Shell(display);<br /> shell.addListener(SWT.Close, new Listener() {<br /> public void handleEvent(Event event) {<br /> int style = SWT.APPLICATION_MODAL | SWT.YES | SWT.NO;<br /> MessageBox messageBox = new MessageBox(shell, style);<br /> messageBox.setText("Information");<br /> messageBox.setMessage("Close the shell?");<br /> event.doit = messageBox.open() == SWT.YES;<br /> }<br /> });<br /> shell.pack();<br /> shell.open();<br /> while (!shell.isDisposed()) {<br /> if (!display.readAndDispatch())<br /> display.sleep();<br /> }<br /> display.dispose();<br /> }<br /> }