fork download
copy 
  1. //C++ ObjInf.dll
  2. //---
  3.  
  4.  
  5.  
  6. #define DLL_EXPORT //省略... 
  7. #define API  __stdcall//CallingConvention
  8.  
  9. extern "C"
  10. {
  11.   struct ObjInf{
  12.     virtual Initial() = 0;
  13.     virtual Delete() = 0;
  14.     virtual Run(int time) = 0;
  15.   };
  16.   DLL_EXPORT ObjInf* API CreateObj();
  17. };
  18.  
  19.  
  20.  
  21. //---
  22. //C#
  23.  
  24.  
  25. using System;
  26. using System.Runtime.InteropServices;
  27. namespace DllTest
  28. {
  29.  
  30.   [StructLayout(LayoutKind.Sequential, Pack = 4, CharSet = CharSet.Ansi)]
  31.   public struct ObjInf_vTable
  32.   {
  33.     [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
  34.     public delegate void funInitial(IntPtr thisPtr);
  35.  
  36.     [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
  37.     public delegate void funDelete(IntPtr thisPtr);
  38.  
  39.     [UnmanagedFunctionPointer(CallingConvention.ThisCall)]
  40.     public delegate void funRun(IntPtr thisPtr , int time);
  41.  
  42.     public funInitial Initial;
  43.     public funDelete Delete;
  44.     public funRun Run;
  45.   }
  46.  
  47.  
  48.   [StructLayout(LayoutKind.Sequential, Pack = 4, CharSet = CharSet.Ansi)]
  49.   public struct sObjInf
  50.   {
  51.     public IntPtr pTable;
  52.   }
  53.  
  54.   class Program
  55.   {
  56.     [DllImport("ObjInf.dll", CallingConvention = CallingConvention.StdCall)]
  57.     public static extern IntPtr CreateObj();
  58.  
  59.  
  60.     static void Main(string[] args)
  61.     {
  62.       IntPtr ThisPtr = CreateObj();
  63.       sObjInf obj = (sObjInf)Marshal.PtrToStructure(ThisPtr, typeof(sObjInf));
  64.       ObjInf_vTable objTable = (ObjInf_vTable)Marshal.PtrToStructure(obj.pTable, typeof(ObjInf_vTable));
  65.  
  66.       objTable.Initial(ThisPtr);
  67.     }
  68.   }
  69. }
  70.  
Not running #stdin #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
Standard output is empty
https://ideone.com/My2YaN
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!