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  • C#开发ActiveX控件及指纹采集

    最近做一个指纹采集和比对的功能,因为公司整个项目是WEB类型的,所以指纹采集的模块要嵌套在网页中,那只有用ActiveX了,以下是一些操作及效果,做个笔记!

    新建用户控件,编写CS代码,如下:

     

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    using System;
    using System.Collections.Generic;
    using System.ComponentModel;
    using System.Drawing;
    using System.Data;
    using System.Text;
    using System.Runtime.InteropServices;
    using System.Windows.Forms;
    using System.IO;
    using System.Reflection;
     
     
    namespace FingerTool
    {
        [Guid("5136CBA1-59B0-4A96-B2DC-64062A81F377")]
        public partial class FingerToolUC : UserControl,IObjectSafety
        {
            public FingerToolUC()
            {
                InitializeComponent();
            }
            FrmMain fm = null;
            public void ShowSettingForm()
            {
                if (fm == null)
                {
                    fm = new FrmMain();
                }
                 
                fm.ShowDialog();
            }
     
     
            #region 调用JS接口
     
            [ComImport, Guid("00000118-0000-0000-C000-000000000046"), InterfaceType(ComInterfaceType.InterfaceIsIUnknown)]
            public interface IOleClientSite
            {
                void SaveObject();
     
                void GetMoniker(uint dwAssign, uint dwWhichMoniker, object ppmk);
     
                void GetContainer(out IOleContainer ppContainer);
     
                void ShowObject();
     
                void OnShowWindow(bool fShow);
     
                void RequestNewObjectLayout();
     
            }
     
            [ComImport, Guid("0000011B-0000-0000-C000-000000000046"), InterfaceTypeAttribute(ComInterfaceType.InterfaceIsIUnknown)]
            public interface IOleContainer
            {
     
                void EnumObjects([In, MarshalAs(UnmanagedType.U4)] int grfFlags,
     
                 [Out, MarshalAs(UnmanagedType.LPArray)] object[] ppenum);
     
                void ParseDisplayName([In, MarshalAs(UnmanagedType.Interface)] object pbc,
     
                 [In, MarshalAs(UnmanagedType.BStr)] string pszDisplayName,
     
                 [Out, MarshalAs(UnmanagedType.LPArray)] int[] pchEaten,
     
                 [Out, MarshalAs(UnmanagedType.LPArray)] object[] ppmkOut);
     
                void LockContainer([In, MarshalAs(UnmanagedType.I4)] int fLock);
     
            }
     
            #endregion
     
            #region IE 安全接口
            private const string _IID_IDispatch = "{00020400-0000-0000-C000-000000000046}";
            private const string _IID_IDispatchEx = "{a6ef9860-c720-11d0-9337-00a0c90dcaa9}";
            private const string _IID_IPersistStorage = "{0000010A-0000-0000-C000-000000000046}";
            private const string _IID_IPersistStream = "{00000109-0000-0000-C000-000000000046}";
            private const string _IID_IPersistPropertyBag = "{37D84F60-42CB-11CE-8135-00AA004BB851}";
     
            private const int INTERFACESAFE_FOR_UNTRUSTED_CALLER = 0x00000001;
            private const int INTERFACESAFE_FOR_UNTRUSTED_DATA = 0x00000002;
            private const int S_OK = 0;
            private const int E_FAIL = unchecked((int)0x80004005);
            private const int E_NOINTERFACE = unchecked((int)0x80004002);
     
            private bool _fSafeForScripting = true;
            private bool _fSafeForInitializing = true;
            public int GetInterfaceSafetyOptions(ref Guid riid, ref int pdwSupportedOptions, ref int pdwEnabledOptions)
            {
                int Rslt = E_FAIL;
                string strGUID = riid.ToString("B");
                pdwSupportedOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER | INTERFACESAFE_FOR_UNTRUSTED_DATA;
                switch (strGUID)
                {
                    case _IID_IDispatch:
                    case _IID_IDispatchEx:
                        Rslt = S_OK;
                        pdwEnabledOptions = 0;
                        if (_fSafeForScripting == true)
                            pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_CALLER;
                        break;
                    case _IID_IPersistStorage:
                    case _IID_IPersistStream:
                    case _IID_IPersistPropertyBag:
                        Rslt = S_OK;
                        pdwEnabledOptions = 0;
                        if (_fSafeForInitializing == true)
                            pdwEnabledOptions = INTERFACESAFE_FOR_UNTRUSTED_DATA;
                        break;
                    default:
                        Rslt = E_NOINTERFACE;
                        break;
                }
     
                return Rslt;
            }

     

    指纹采集关键代码:

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    private void axZKFPEngX1_OnImageReceived(object sender, AxZKFPEngXControl.IZKFPEngXEvents_OnImageReceivedEvent e)
            {
                if (!e.aImageValid) return;
                if (axZKFPEngX1.IsDisposed) return;
                try
                {
                    if (pictureBox1.Image != null)
                    {
                        pictureBox1.Image.Dispose();//释放文件资源
                        pictureBox1.Image = null;//清除图片
                    }
                    if (!System.IO.Directory.Exists(mvPath))
                    {
                        System.IO.Directory.CreateDirectory(mvPath);
                    }
     
                    string FilePath = mvPath + "\" + Guid.NewGuid().ToString() + ".bmp";
     
                    axZKFPEngX1.SaveBitmap(FilePath);//保存新文件
                    pictureBox1.Image = System.Drawing.Bitmap.FromFile(FilePath);//显示图片
                    pictureBox1.Refresh();
     
                    if (this.txtValue.Text.Trim() != "")
                    {
                        SetMsg("", "Control");
                    }
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
     
       private void axZKFPEngX1_OnFeatureInfo(object sender, AxZKFPEngXControl.IZKFPEngXEvents_OnFeatureInfoEvent e)
            {
                string sTemp = "";
                if (axZKFPEngX1.IsRegister)
                {
                    sTemp = "登记状态:还需要按压:" + (axZKFPEngX1.EnrollIndex - 1).ToString() + "次指纹 ";
                }
     
                sTemp = sTemp + "指纹质量";
     
                if (e.aQuality != 0)
                {
                    if (e.aQuality == 1)
                    {
                        sTemp = sTemp + "特征点不够";
                    }
                    else
                    {
                        sTemp = sTemp + "其它原因导致不能取到指纹特征";
                    }
                }
                else
                {
                    sTemp = sTemp + "合格";
     
                }
                this.lblMessage.Text = sTemp;
            }

    指纹校验部分,最后保存起来的指纹是转换之后的BASE64字符串

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    string Value_Old="";//已经登记的指纹
    string Value_Curr="";//当前的指纹
     
     bool IsOK = false;
                bool bRegChange = false;
     
                if (axZKFPEngX1.VerFingerFromStr(ref Value_Old, Value_Curr, false, ref bRegChange))
                {
                    IsOK = true;
                }
                if (axZKFPEngX1.VerFingerFromStr(ref Value_Old2, Value_Curr, false, ref bRegChange))
                {
                    IsOK = true;
                }
     
                if (IsOK)
                {
                    MessageBox.Show("OK");
                }
                else
                {
                    MessageBox.Show("NG");
     
                }

    设置项目的COM属性

    图片

    在页面中注册此插件

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    采集指纹的次数可以自定义,默认为采集三次之后保存,设备是中控的采集器。

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  • 原文地址:https://www.cnblogs.com/gc2013/p/4213147.html
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