日期:2014-05-18 浏览次数:20917 次
// ============== 常量定义 ===================== #define ID_MAX_SIZE 8 // ID号最多8字节(64bits) #define MAX_LABELS 5 // 一次读写操作最多不超过5个 typedef struct tagID { unsigned short Address; // ID号在标签内存中的地址 unsigned short Length; // ID号字节数 unsigned char Num[MAX_LABELS][ID_MAX_SIZE]; // 存放ID号的字节数组 } ID; //读取标签ID号 apiReturn _stdcall ReadLabelID(HANDLE hScanner, int nMax, ID *IDBuffer, int *nCounter);
[DllImport("Reader2022DLL.dll")] unsafe public static extern UInt16 ReadLabelID(IntPtr hScanner,int nMax,ref tagID IDBuffer,ref int nCounter); public const int ID_MAX_SIZE=8; // ID号最多8字节(64bits) public const int MAX_LABELS = 5; // 一次读写操作最多不超过5个 [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi,Pack=1)] unsafe public struct tagID { public ushort Address; // ID号在标签内存中的地址 public ushort Length; // ID号字节数 [MarshalAs(UnmanagedType.ByValArray, SizeConst = 40)] public byte [,] Num; // 存放ID号的字节数组 };