这是一个用VC++编写的一个多线程的程序，点击测试开始菜单时会显示进度条并且显示运行时间，点击停止时会显示为0.-This is a used VC++ to prepare a multi-threaded process, click on the Start menu to test the progress bar will show the running time and shows, click to stop when they appear as 0.