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C# 开发 activeX 插件实现屏幕截图功能

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  • 开发语言：C#
  • 实例大小：0.04M
  • 下载次数：36
  • 浏览次数：396
  • 发布时间：2016-11-10
  • 实例类别：C#语言基础
  • 发 布 人：crazycode
  • 文件格式：.rar
  • 所需积分：2
 相关标签： 截图 C# activex 插件
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实例介绍

【实例简介】

【实例截图】

【核心代码】

网页调用代码：


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<!DOCTYPE html>
<html>
  <head>
    <title>测试</title>
     
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="this is my page">
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <script>
        function jt(){
             var str="";
             try
             {
                var obj = document.getElementById("MyActiveX");   
                str=obj.PrintScreen();
             }
             catch(e)
            {
                alert(e);
                return;
            }
 
             var img=document.getElementById("img");
             img.src="data:image/jpeg;base64," str;
//img.width=500;
             //document.getElementById("img_div").clear();
             //document.getElementById("img_div").appendChild(img);
        }
    </script>
  </head>
   
  <body>
    <OBJECT ID="MyActiveX" WIDTH="120" HEIGHT=20" CLASSID="CLSID:61D7F413-A1B2-48A9-B851-5BFBCF50280C"></OBJECT>
    <input type="button" value="截图" onclick="jt();">
    <Image id ="img" />
  </body>
</html>


activeX端代码：


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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.IO;
using System.Drawing.Imaging;
 
//////      2016年6月12日 大萝卜控  ////////
 
namespace PrintScreenLib
{
    [Guid("61D7F413-A1B2-48A9-B851-5BFBCF50280C")]
    public partial class PSLib : UserControl, IObjectSafety
    {
        #region IObjectSafety 成员
        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;
        }
 
        public int SetInterfaceSafetyOptions(ref Guid riid, int dwOptionSetMask, int dwEnabledOptions)
        {
            int Rslt = E_FAIL;
 
            string strGUID = riid.ToString("B");
            switch (strGUID)
            {
                case _IID_IDispatch:
                case _IID_IDispatchEx:
                    if (((dwEnabledOptions & dwOptionSetMask) == INTERFACESAFE_FOR_UNTRUSTED_CALLER) &&
                            (_fSafeForScripting == true))
                        Rslt = S_OK;
                    break;
                case _IID_IPersistStorage:
                case _IID_IPersistStream:
                case _IID_IPersistPropertyBag:
                    if (((dwEnabledOptions & dwOptionSetMask) == INTERFACESAFE_FOR_UNTRUSTED_DATA) &&
                            (_fSafeForInitializing == true))
                        Rslt = S_OK;
                    break;
                default:
                    Rslt = E_NOINTERFACE;
                    break;
            }
 
            return Rslt;
        }
        #endregion
 
        public PSLib()
        {
            InitializeComponent();
        }
 
        private void PSLib_Load(object sender, EventArgs e)
        {
 
        }
 
        public string PrintScreen()
        {
            Image baseImage = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
            Graphics g = Graphics.FromImage(baseImage);
            g.CopyFromScreen(new Point(0, 0), new Point(0, 0), Screen.AllScreens[0].Bounds.Size);
            g.Dispose();
            baseImage.Save("D:\\screen.jpg", ImageFormat.Jpeg);
            Stream file = new FileStream("D:\\screen.jpg", FileMode.Open);
            BinaryReader bw = new BinaryReader(file);
            var buffer = new byte[file.Length];
            bw.Read(buffer, 0, buffer.Length);
            bw.Close();
            string b64 = Convert.ToBase64String(buffer);
            return b64;
        }
    }
}


标签： 截图 C# activex 插件

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C# 开发 activeX 插件实现屏幕截图功能

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