C # call DLL in the parameters of the void * c how to pass?-CodePudding

C + + header file called

 
The namespace CSDK 
{
Extern "C" __declspec (dllexport) int the initialize (char * key, void * sdkDelegate) 
}

The void * sdkDelegate are defined as follows:

 
The class ClientDelegate 
{
Public: 

Virtual void sendMessage (char * messageID, int sendResult)=0. 

Virtual void receiveMessage (int msgType, void * msgObject)=0. 
}

Excuse me each great god c # the initialize method, how to transfer void * sdkDelegate this parameter ah,,, thank you

 
[DllImport (DLLPATH, EntryPoint="initialize" CharSet=CharSet. Ansi, CallingConvention=CallingConvention. Cdecl)] 
Public static extern int the Initialize (string appkey, IntPtr a);