cyper的例子：
注意dialog.open()返回Dialog.OK而不是SWT.OK

窗体代码：

public class ChooseIntegerDialog extends Dialog {private String[] possibleIntegerFields;/*** checkedIntegerFields is fields separated with comma*/private String checkedIntegerFields;private List<Button> buttonList = new ArrayList<Button>();public ChooseIntegerDialog(Shell parentShell, String[] possibleIntegerFields) {super(parentShell);this.possibleIntegerFields = possibleIntegerFields;}@Overrideprotected void configureShell(Shell newShell) {super.configureShell(newShell);newShell.setSize(300, 200);newShell.setLocation(450, 200);newShell.setText("Choose Integer Dialog");}@Overrideprotected Control createDialogArea(Composite parent) {parent.setLayout(new GridLayout(1, false));new Label(parent, SWT.NONE).setText("哪些字段是数值类型(不使用单引号包裹)");for (int i = 0; i < possibleIntegerFields.length; i++) {Button btn = new Button(parent, SWT.CHECK);btn.setText(possibleIntegerFields[i]);buttonList.add(btn);}return super.createDialogArea(parent);}@Overrideprotected void okPressed() {StringBuffer sb = new StringBuffer();for (Button btn : buttonList) {if (btn.getSelection()) {sb.append(btn.getText());sb.append(",");}}if (sb.length() > 0) {sb.setLength(sb.length() - 1);checkedIntegerFields = sb.toString();}super.okPressed();}public String getCheckedIntegerFields() {return checkedIntegerFields;}
}

使用代码：

    String[] possibleIntegerFields = REUtil.getREGroupSet(content, "([_a-zA-Z0-9]+)\\s*(?:=|<>|!=)\\s*'[0-9]+'");String checkedIntegerFields = null;ChooseIntegerDialog integerDialog = new ChooseIntegerDialog(sw.getShell(), possibleIntegerFields);if (integerDialog.open() == Dialog.OK) {checkedIntegerFields = integerDialog.getCheckedIntegerFields();}else{return;}

以下是转载部分

近期的工作需要一个模态化的对话框，发现JFace中的Dialog正好符合我的要求，并且可以定制的方面也不少，使用起来很方便。下面是一些常用方法，因此在这里记录下来。

①设置标题栏名称

protected void configureShell(Shell newShell) {  // TODO Auto-generated method stub  super.configureShell(newShell);  newShell.setText("Hello！");
}

②设置窗体大小

protected Point getInitialSize() {  // TODO Auto-generated method stub  return new Point(300,400);
}

③取消自带的OK、Cancel按钮

@Override  protected void createButtonsForButtonBar(Composite parent) {  // TODO Auto-generated method stub  }

④定义对话框上我们需要的控件

@Override      protected Control createDialogArea(Composite parent) {      // TODO Auto-generated method stub      Composite container = new Composite(parent, SWT.NONE);      container.setBounds(0, 0, 300, 400);      Button btn = new Button(container, SWT.NONE);      btn.setBounds(10, 10, 55, 20);      btn.setText("Click！");      // 实现自带“取消”按钮的功能  btn.addSelectionListener(new SelectionAdapter(){  @Override  public void widgetSelected(SelectionEvent e) {  // TODO Auto-generated method stub  setReturnCode(CANCEL);  close();  }  });  return container;      }

⑤居中对齐

这个最简单了，在创建Dialog的时候指定父窗口shell就可以了！

⑥更改Shell样式

@Override  protected void setShellStyle(int newShellStyle) {  // TODO Auto-generated method stub  // 取消关闭“X”按钮  super.setShellStyle(newShellStyle ^ SWT.CLOSE);  }

⑦自定义关闭事件

@Override
public boolean close() {  // TODO Auto-generated method stub  super.close();  // do something  return true;
}