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Question

下面是我调用API的一个类， 其中最后一个函数中调所声明的API时出错， 请高手帮忙找一下原因，急！
using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
namespace CarCardRecognise
{    public class Recognise
    {
        private const string dllName = "lpclr.dll";        /// <summary>
        ///  牌照识别的结果通过 VEHREC 结构返回。VEHREC 结构包含了有关车辆牌照的相关信息，包括牌照号码、牌照颜色、牌照区域、牌照图像等
        /// </summary>
        [StructLayout(LayoutKind.Sequential)]
        public struct Vehrec
        {
            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
            public byte[] vehid;            public int time;            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 8)]
            public byte[] color_plate;            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 32)]
            public byte[] site;            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
            public byte[] lane;            public int speed;            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 8)]
            public byte[] model;            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 8)]
            public byte[] color;            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 4)]
            public int[] rect_plate;            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
            public byte[] im_info;            public int img_cx;
            public int img_cy;
            public char img_type;
            public long img_size;
            public char flag;            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
            public byte[] status;            [MarshalAs(UnmanagedType.ByValTStr, SizeConst = 16)]
            public byte[] reserved;            [MarshalAs(UnmanagedType.ByValArray, SizeConst = MAX_IMGCODE_SIZE)]
            public byte[] img;
        }        //常量定义
        private const int MAX_IMGCODE_SIZE = 32768;  //1024*32        /// <summary>
        /// 初始化牌照识别
        /// </summary>
        /// <param name="nWidth"></param>
        /// <param name="nHeight"></param>
        /// <param name="Mode"></param>
        /// <returns></returns>
        [DllImportAttribute(dllName)]
        internal static extern int Init(int nWidth, int nHeight, byte Mode);
     
        /// <summary>
        /// 牌照识别
        /// </summary>
        /// <param name="pImgs"></param>
        /// <param name="lpRec"></param>
        /// <param name="pLUT"></param>
        /// <param name="flag"></param>
        /// <param name="imgrect"></param>
        /// <returns></returns>
        [DllImportAttribute(dllName, CharSet = CharSet.Auto)]
        internal static extern int RecognizeLP(System.IntPtr pImgs, ref Vehrec lpRec, long pLUT, long flag, long imgrect);
        /// <summary>
        /// 参数设置
        /// </summary>
        [DllImportAttribute(dllName)]
        internal static extern void LoadSetting(int index, string cityWord);
        /// <summary>
        /// 车辆检测
        /// </summary>
        /// <returns></returns>
        [DllImportAttribute(dllName)]
        internal static extern int DetectMoving(byte[] images, byte[] lastImages, Vehrec rec, bool flag);
        /// <summary>
        /// 识别并显示结果
        /// </summary>
        public void GetAndDispReuult()
        {
            System.Windows.Forms.OpenFileDialog objDlg = new OpenFileDialog();
            objDlg.Filter = "JPG files(*.jpg)|*.jpg|BMP files(*.bmp)|*.bmp";
            objDlg.ReadOnlyChecked = false;
            objDlg.Multiselect = false;
            objDlg.Title = "选择文件";            if (objDlg.ShowDialog() == System.Windows.Forms.DialogResult.OK)
            {
                string path = objDlg.FileName;                System.IO.FileStream stream = new System.IO.FileStream(path, System.IO.FileMode.Open);
                byte[] bytes = new byte[stream.Length];
                stream.Read(bytes, 0, (int)stream.Length);
                stream.Dispose();
                stream.Close();
                System.IO.MemoryStream ms = new System.IO.MemoryStream(bytes);
                System.Drawing.Image photo = System.Drawing.Image.FromStream(ms);                picImage.Image = photo;                int i = Recognise.Init(photo.Width, photo.Height, 2);
                Recognise.LoadSetting(2, "豫");                System.IntPtr pdata = System.Runtime.InteropServices.Marshal.UnsafeAddrOfPinnedArrayElement(bytes, 0);                Vehrec lpRec = new Vehrec();                int ii = Recognise.RecognizeLP(pdata, ref lpRec, 0, 1, 0);
            }
        }
 
    }
}

Answer 1

楼主说的是调用DetectMoving这个函数吗？
在你最后的函数中没有发现你的调用啊还有你要把你的错误信息给贴出来

Answer 2

不是的，  是在调用
int   ii   =   Recognise.RecognizeLP(pdata,   ref   lpRec,   0,   1,   0); 
时出错的！

Answer 3

错误内容大制如下：KERNEL32.dllEAX=03BFF2C8 CS=001B EIP=7C812A5B EFLAGS=000000202
.....
....
.....等都是些类似堆栈地址的东西。