用普通USB摄像头捕捉图像

代码说明：

#ifndef _DLL_H_ #define _DLL_H_ #define EXPORT __declspec (dllexport) EXPORT long SetUp(long driver, long width, long height); EXPORT long GetDigitizer(long DigitizerID, CHAR *str); EXPORT void Grab(unsigned char *LVPict); EXPORT void ShowDialog(long WhichDlg); #endif