c结构体包含回调函数在c#中怎样引用

Question

typedef struct TH_PlateIDCfg
{
int nMinPlateWidth;
int nMaxPlateWidth;
int nMaxImageWidth;
int nMaxImageHeight;
unsigned char bVertCompress;
unsigned char bIsFieldImage;
unsigned char bOutputSingleFrame;
unsigned char bMovingImage;
unsigned char bIsNight; 
unsigned char nImageFormat; 
unsigned char * pFastMemory; 
int nFastMemorySize;
unsigned char *pMemory;     /*普通内存的地址，内建的内存管理，避免内存泄漏等问题*/
int nMemorySize; // 普通内存的大小
int (*DMA_DataCopy)(void *dst, void *src,int nSize);
int (*Check_DMA_Finished)();
int nLastError;      // 用于传递错误信息
int nErrorModelSN; // 出错的模块编号
char reserved[120];  //保留
}TH_PlateIDCfg;
这样一个结构体，如何在c#中引用？关键是int (*DMA_DataCopy)(void *dst, void *src,int nSize);
int (*Check_DMA_Finished)();
这两个函数怎么办

Answer 1

http://www.bianceng.cn/Programming/csharp/200911/11864.htm

Answer 2

public delegate int TH_PlateIDCfg_DMA_DataCopy(IntPtr dst,IntPtr src, int nSize);
public delegate int TH_PlateIDCfg_Check_DMA_Finished();
[StructLayoutAttribute(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
public struct TH_PlateIDCfg {
    public int nMinPlateWidth;
    public int nMaxPlateWidth;
    public int nMaxImageWidth;
    public int nMaxImageHeight;
    public byte bVertCompress;
    public byte bIsFieldImage;
    public byte bOutputSingleFrame;
    public byte bMovingImage;
    public byte bIsNight;
    public byte nImageFormat;
    [MarshalAsAttribute(UnmanagedType.LPStr)]
    public string pFastMemory;
    public int nFastMemorySize;
    [MarshalAsAttribute(UnmanagedType.LPStr)]
    public string pMemory;
    public int nMemorySize;
    public TH_PlateIDCfg_DMA_DataCopy AnonymousMember1;
    public TH_PlateIDCfg_Check_DMA_Finished AnonymousMember2;
    public int nLastError;
    public int nErrorModelSN;
    [MarshalAsAttribute(UnmanagedType.ByValTStr, SizeConst=120)]
    public string reserved;
}
public delegate int DMA_DataCopy(IntPtr dst,IntPtr src, int nSize);
public delegate int Check_DMA_Finished();
试下看成不

Answer 3

错误 3 找不到类型或命名空间名称“TH_PlateIDCfg_DMA_DataCopy”(是否缺少 using 指令或程序集引用?) E:\c#work\identify\id_test1\id_test1\Class_Struct.cs 102 20 id_test1
这个声明应该放在哪里？

Answer 4

另：StructLayoutAttribute(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
这行为什么报：错误 5 命名空间并不直接包含诸如字段或方法之类的成员 E:\c#work\identify\id_test1\id_test1\Class_Struct.cs 79 10 id_test1
已经包含了：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;