[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Unicode, Pack = 8)] public struct PERSONINFOW { [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)] public string name; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 2)] public string sex; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 10)] public string nation; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 10)] public string birthday; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 36)] public string address; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 20)] public string cardId; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)] public string police; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 10)] public string validStart; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 10)] public string validEnd; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 2)] public string sexCode; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 4)] public string nationCode; [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 36)] public string appendMsg; }
#endregion #region [DllImport("cardapi3.dll", EntryPoint = "OpenCardReader", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.StdCall)] public static extern Int32 OpenCardReader(Int32 lPort, UInt32 ulFlag, UInt32 ulBaudRate); [DllImport("cardapi3.dll", EntryPoint = "GetPersonMsgW", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)] public static extern Int32 GetPersonMsgW(ref PERSONINFOW pInfo,string pszImageFile); [DllImport("cardapi3.dll", EntryPoint = "CloseCardReader", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)] public static extern Int32 CloseCardReader(); [DllImport("cardapi3.dll", EntryPoint = "GetErrorTextW", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)] public static extern void GetErrorTextW(StringBuilder pszBuffer, UInt32 dwBufLen); [DllImport("cardapi3.dll", EntryPoint = "ResetCardReader", CharSet = CharSet.Unicode, CallingConvention = CallingConvention.Cdecl)] public static extern Int32 ResetCardReader(); #endregion
设置返回的ref参数为static 解决……
转载于:https://www.cnblogs.com/Linc2010/p/3423220.html
