如何使用pinvoke將marshall內部的結構傳遞給C DLL

Question

我想弄清楚如何將一個簡單的結構嵌入到另一個傳遞給C＃的C DLL的結構中。你如何編制嵌入式結構？剝離爲必需品。

//The C code 
typedef struct { 
     int a; 
     int b; 
} A; 
typedef struct { 
     int c; 
     A myStruct; 
} B; 

//The c# code: 
using System.Runtime.InteropServices; 

    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)] 
    public class A{ 
     int a; 
     int b; 
    } 

    [StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)] 
    public class B{ 
      int c; 
      public IntPtr A; 
    } 

Answer 1

[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)] 
public class B{ 
     int c; 
     public A a; 
    } 

需要IntPtr的只有B定義爲：

typedef struct { 
     int c; 
     A* myStruct; 
} B;