VB多线程绘图程序，无聊时改的一个多线程窗口绘图程序，加了线程同步技术，此多线程可在IDE下调用运行，但退出程序，VB6会崩溃。每条线一个线程，开了1000多线程，CPU占用不到2 -VB multi-threaded graphics program, a multi-threaded window drawing program change when bored, add thread synchronization technology, this multi-threaded call to run, but to exit the program under the IDE of VB6 will crash. One thread of each line, and opened more than 1000 threads, CPU usage is less than 2