天敏VC4000获取图形图像源码，在原有的DEMO上实现了按每帧获取图片，每秒25帧-Mortimer VC4000 access to graphic image source, in the original DEMO achieved by each frame image.

VB基于天敏VC4000系列监控卡的DEMO-VB-based monitoring Tianmin card VC4000 Series DEMO

VC4000在WIN7上多个摄像头是无法正常识别的。故经过我的改正，采用多线程，现可正常访问每个摄像头，特分享与此-VC4000 in WIN7 on multiple cameras can not be recognized properly. Therefore, after corrections, multi-threaded, can now normal access to each camera special to share with this