Intptr是Struct数组的起始地址，怎么获取数组中其他Struct值

Intptr是Struct数组的起始地址，如何获取数组中其他Struct值
调用C++方法返回数组首地址

C# code

IntPtr returnIntPtr = PictureMatching.GetMatchingResult(ref result_size,sbSimpleFilePath.ToString(),sbSelectedPictruePath.ToString(), intMatchingType, rect);

这样写可以获得数组中第一个Struct值

C# code

PicMatchingResult testPicMatchingResult = (PicMatchingResult)Marshal.PtrToStructure(returnIntPtr, typeof(PicMatchingResult));

returnIntPtr是数组起始地址，result_size是数组长度，从起始地址我可以获得该Struct正确的值，但是如何得到数组其他元素？

望指教！

[解决办法]

C# code

using System;using System.Collections.Generic;using System.ComponentModel;using System.Data;using System.Drawing;using System.Linq;using System.Text;using System.Windows.Forms;using System.Runtime.InteropServices;namespace WindowsFormsApplication14{    struct S    {        public int a;        public int b;    }    public partial class Form1 : Form    {        public Form1()        {            InitializeComponent();            S[] s = new S[2]            {               new S()               {                   a=1,                   b=11               },               new S()               {                   a=2,                   b=22               }            };            //for (int i = 0; i < 2; i++)            //{            //    IntPtr P = Marshal.UnsafeAddrOfPinnedArrayElement(s, i);            //    S A = (S)Marshal.PtrToStructure(P, typeof(S));            //    MessageBox.Show("a=" + A.a + "  b=" + A.b);            //}            IntPtr P = Marshal.UnsafeAddrOfPinnedArrayElement(s, 0);            S A = (S)Marshal.PtrToStructure(P, typeof(S));            MessageBox.Show("a=" + A.a + "  b=" + A.b);            P = new IntPtr(P.ToInt32() + Marshal.SizeOf(A));            A = (S)Marshal.PtrToStructure(P, typeof(S));            MessageBox.Show("a=" + A.a + "  b=" + A.b);        }    }} 

 

查看更多 下一篇