public static extern bool NET_DVR_SetPlayDataCallBack(int lPlayHandle, PLAYDATACALLBACK fPlayDataCallBack, uint dwUser);
public static extern bool NET_DVR_SetPlayDataCallBack(int lPlayHandle, PLAYDATACALLBACK fPlayDataCallBack, uint dwUser);
public static extern bool NET_DVR_SetPlayDataCallBack(int lPlayHandle, PLAYDATACALLBACK fPlayDataCallBack, uint dwUser);
public static extern bool NET_DVR_SetPlayDataCallBack(int lPlayHandle, PLAYDATACALLBACK fPlayDataCallBack, uint dwUser);