dllimport参数问题

[lhprince]

C#中结构的定义
 public  struct AccountMsg
    {
        
        [MarshalAs(UnmanagedType.ByValTStr,SizeConst=21)]
	     public string Name; 				/*姓名四个汉字*/
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 2)]
        public string SexNo; 		 /*性别*/
       [MarshalAs(UnmanagedType.ByValTStr, SizeConst=19)]
	   public string  DeptCode;			/*部门代码*/
       
       public UInt32 CardNo; 				/*卡号*/
       
       public Int32 AccountNo; 		        /*帐号*/
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 21)]
	     public string StudentCode; 		/*学号*/
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 21)]
	     public string IDCard; 			/*身份证号*/
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 3)]
	    public string PID;					/*身份代码*/
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 13)]
	     public string IDNo; 				/*身份序号*/
        public Int32 Balance; 				/*现余额*/
        [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 7)]
	     public string	Password;			/*消费密码*/
       [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 7)]
	     public string ExpireDate;			/*账户截止日期*/
	     public UInt16      		SubSeq;					/*补助戳*/
	     public  char        IsOpenInSys;			/*是否在本系统内开通*/
	    public Int16				TerminalNo;				/*终端号码*/
        public Int16               RetCode;				/*后台处理返回值*/
    }



    C++中头文件的定义

    typedef struct
{
	char      			Name[21]; 				/*姓名四个汉字*/
	char      			SexNo[2]; 				/*性别*/
	char				DeptCode[19];			/*部门代码*/
	unsigned int		CardNo; 				/*卡号*/
	unsigned int		AccountNo; 				/*帐号*/
	char				StudentCode[21]; 		/*学号*/
	char				IDCard[21]; 			/*身份证号*/
	char				PID[3];					/*身份代码*/
	char				IDNo[13]; 				/*身份序号*/
	int					Balance; 				/*现余额*/
	char				Password[7];			/*消费密码*/
	char				ExpireDate[7];			/*账户截止日期*/
	unsigned short		SubSeq;					/*补助戳*/
	char				IsOpenInSys;			/*是否在本系统内开通*/
	short				TerminalNo;				/*终端号码*/
	short				RetCode;				/*后台处理返回值*/
} AccountMsg;


   方法的声明
   public class CardStuff
   {

       [DllImport("C:\\windows\\system32\\AIO_API.dll",CallingConvention=CallingConvention.Cdecl)]
        public static extern int TA_ReadCardSimple( ref AccountMsg  pAccMsg);

   }

   

调用方法之后传回的结构体中部分参数值不正确，比如cardno和accountno高手们帮看看到底哪里错了，谢了

[lhprince]

AccountNo是UInit32也不正确

[bdmh]

c++ 原型是啥，是Cdecl调用还是stdcall调用

[lhprince]

int _stdcall TA_ReadCardSimple(AccountMsg * pAccMsg);
源代码我没有

[lhprince]

有人知道吗？

[lhprince]

自己顶