C++函数

void * __stdcall OpenDppApi(); 怎么转化为C#函数

 

C# code

[System.Runtime.InteropServices.DllImportAttribute("
    
     ", EntryPoint="OpenDppApi", CallingConvention=System.Runtime.InteropServices.CallingConvention.StdCall)]publicstaticextern  System.IntPtr OpenDppApi() ;