使用VC.NET实现多线程多任务的编写实例，当用户拖动最小化窗口时系统调用此函数取得光标显示。若遇到是1000的倍数时发送消息，更新对应进度条，延缓时间，通知更新进度条，启动第一个进度条工作线程，启动第二个进度条工作线程，并可重置线程，终止线程并初始化进度条。-Use VC.NET write multi-threaded multi-tasking instance, when the user drags the minimized window system calls this function to obtain the cursor display. If you encounter is a multiple of 1000 sent a message to update the corresponding progress bar, time delay, notify the update progress bar, progress bar starts first worker thread, start a second progress bar worker threads, and reset the thread, the thread terminates and initializes the progress bar.