SWT：文本框

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public static void showText(Shell shell) {
final Text content = new Text(shell, SWT.WRAP | SWT.V_SCROLL);
content.setBounds(5, 5, 325, 200);

  Button selectAll = new Button(shell, SWT.NONE);
  selectAll.setText("全选");
  selectAll.setBounds(5, 225, 75, 25);
  selectAll.addSelectionListener(new SelectionAdapter() {
   public void widgetSelected(SelectionEvent e) {
    // 选中所有文本
    content.selectAll();
   }
  });

  Button cancel = new Button(shell, SWT.NONE);
  cancel.setText("取消全选");
  cancel.setBounds(90, 225, 75, 25);
  cancel.addSelectionListener(new SelectionAdapter() {
   public void widgetSelected(SelectionEvent e) {
    // 如果有选中的文本
    if (content.getSelectionCount() > 0) {
     content.clearSelection(); // 清楚选择
    }

}
});

  Button copy = new Button(shell, SWT.NONE);
  copy.setText("复制");
  copy.setBounds(175, 225, 75, 25);
  copy.addSelectionListener(new SelectionAdapter() {

   public void widgetSelected(SelectionEvent e)
   {
    //复制到剪贴板
    content.copy();
   }
  });

  Button paste = new Button(shell, SWT.NONE);
  paste.setText("粘贴");
  paste.setBounds(260, 225, 75, 25);
  paste.addSelectionListener(new SelectionAdapter(){
   public void widgetSelected(SelectionEvent e)
   {
    //将剪贴板的内容粘贴
    content.paste();
   }
  });
}