利用线程在程序繁忙时显示进度条实例，VC初学者从中可学到多线程的处理方法，有经验的开发者也可将其用到自己的程序中。-Procedures for the use of threads in the busy show examples of the progress bar, VC beginners can learn from multi-threaded approach, experienced developers can also be used in their program.