这是一款用多线程画线的程序，对学习C++编写多线程程序很有帮助。-This is a line drawn with a multi-threaded program, write to learn C++ multi-threaded program helpful.

多线程编程技术与实例源代码，drawLine程序，可选择多线程画线或定时器画线，-Multi-threaded programming techniques and examples of source code, drawLine procedures may choose to draw lines or multi-threaded timer painting lines,