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

 

C# code

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