window7或更高版本的系统，用鼠标模拟多点触控，同时接入多少个鼠标，就模拟多少个触控点。不需要多点触控硬件，就可以模拟出跟多点触控相同的触控消息。-window7 or later system, use the mouse to simulate multi-touch, while access to the number of mouse, the number of touch points on the simulation. No multi-touch hardware, yo