SWT的button组件中，添加单击事件监听

//匿名内部类写法

Button btChnagText = new Button(shell, SWT.NONE);btChnagText.addSelectionListener(new SelectionAdapter(){public void widgetSelected(SelectionEvent e){tAa.setText("new text");MessageDialog.openInformation(null, "", "hello");}});Button btChnagText = new Button(she