VFP调用API来控件USB摄像头,实现拍照或录像。-VFP call the API to control USB camera, take pictures or video realization.

实验五 DOS功能调用 1.实验目的 （1）学会DOS中关于显示功能调用指令的用法； （2）领会修改显存方法显示字符。-Experiment 5 DOS function calls 1. Purpose (1) learn about the use of the DOS display function call instruction (2) understand the method of modifying video memory to display ch