SWT编写界面窗口时让窗口处于屏幕中间
一、使用SWT本身

import java.awt.Toolkit;/*** 在屏幕中间显示Shell* @param shell 要显示的Shell对象*/private void centerShell(Shell shell){         //得到屏幕的宽度和高度         int screenHeight = Toolkit.getDefaultToolkit().getScreenSize().height;         int screenWidth = Toolkit.getDefaultToolkit().getScreenSize().width;         //得到Shell窗口的宽度和高度         int shellHeight = shell.getBounds().height;         int shellWidth = shell.getBounds().width;         //如果窗口大小超过屏幕大小，让窗口与屏幕等大         if(shellHeight > screenHeight)                   shellHeight = screenHeight;         if(shellWidth > screenWidth)                  shellWidth = screenWidth;        //让窗口在屏幕中间显示        shell.setLocation(( (screenWidth - shellWidth) / 2),((screenHeight - shellHeight) / 2) );}