P /通过错位名称调用函数

我试图在windows ce 6.0环境中调用.net cf 3.5中的非托管c ++ dll中的函数。

结构定义为：

typedef struct TagOperatorInfo { DWORD dwMode; DWORD dwFormat; //Operator name format DWORD dwAct; //Network type(Available in 3G module£ºGSM or 3G), TCHAR szOper[32]; }OperatorInfo,*LPOperatorInfo; 

和函数调用是：

 BOOL GetCurOperatorInfo(LPOperatorInfo pinfo); 

我在.net中定义了TagOperatorInfo，如下所示：

 [System.Runtime.InteropServices.StructLayoutAttribute(System.Runtime.InteropServices.LayoutKind.Sequential, CharSet = System.Runtime.InteropServices.CharSet.Auto)] public struct TagOperatorInfo { /// DWORD->unsigned int public uint dwMode; /// DWORD->unsigned int public uint dwFormat; /// DWORD->unsigned int public uint dwAct; /// TCHAR[32] [System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.ByValTStr, SizeConst = 32)] public string szOper; } 

在看到一些文章和msdn文档后，我将本机函数称为：

 [System.Runtime.InteropServices.DllImportAttribute(gsmaAdapterDLLName, EntryPoint = "#30", CallingConvention = CallingConvention.Winapi)] [return: System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.Bool)] internal static extern bool GetCurOperatorInfo([MarshalAs(UnmanagedType.LPStruct)] ref NativeHelper.TagOperatorInfo operatorInfo); 

注意：我使用序数定义的入口点调用该函数，因为c ++错位的名称。

我遇到的问题是我总是得到notSupportedException抛出。 我不明白因为ref参数应该给它指向struct的指针。

我调用它的.net函数是：

 /// 
 /// Gets the current operator information. /// 
 /// The operator info. ///  public static bool GetOperatorInformation(out NativeHelper.TagOperatorInfo operatorInfo) { operatorInfo = new NativeHelper.TagOperatorInfo(); if (NativeImports.GetCurOperatorInfo(ref operatorInfo) == true) { return true; } else { return false; } } 

我错过了这个工作。

UPDATE

新的.Net Compact Framework方法调用

 [System.Runtime.InteropServices.DllImportAttribute(gsmaAdapterDLLName, EntryPoint = "?GetCurOperatorInfo@CGSMAdapter@@YAHPAUTagOperatorInfo@@@Z", CallingConvention = CallingConvention.Winapi)] [return: System.Runtime.InteropServices.MarshalAsAttribute(System.Runtime.InteropServices.UnmanagedType.Bool)] internal static extern bool GetCurOperatorInfo([MarshalAs(UnmanagedType.LPStruct)]ref NativeHelper.TagOperatorInfo operatorInfo); 

 [DllImport(gsmaAdapterDLLName, EntryPoint="?GetCurOperatorInfo@CGSMAdapter@@YAHPAUTagOperatorInfo@@@Z", ExactSpelling = true, CallingConvention = CallingConvention.Cdecl)] public static extern bool GetCurOperatorInfo(out TagOperatorInfo info); 

 DllImport(gsmaAdapterDLLName, EntryPoint="?GetCurOperatorInfo@CGSMAdapter@@YAHPAUTagOperatorInfo@@@Z", CallingConvention = CallingConvention.WinApi)] public static extern bool GetCurOperatorInfo(out TagOperatorInfo info);