替换Webbrowser默认的弹出菜单

最新推荐文章于 2021-03-23 11:24:26 发布

转载最新推荐文章于 2021-03-23 11:24:26 发布 · 73 阅读

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CC 4.0 BY-SA版权

原文链接：http://www.cnblogs.com/lujin49/archive/2012/01/05/2312878.html

本文介绍了一个使用HTML、CSS、JavaScript等技术实现网页元素的交互，并自定义浏览器弹出菜单的设计案例，包括超链接、图片的操作及刷新、查看源代码等功能。

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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.Threading;
using HtmlDom;
namespace HTMLElementSelect
{
     public partial class Form1 : Form
     {
         public Form1()
         {
             InitializeComponent();
         }
         AboutForm afrm=new AboutForm();
         private void Form1_Load(object sender, EventArgs e)
         {
             webBrowser1.Navigate("http://www.cnblogs.com/JiangHuakey/");
            webBrowser1.ContextMenuStrip = contextMenuStrip1;    //! 设置我们自己的弹出菜单
             webBrowser1.IsWebBrowserContextMenuEnabled = false;  //! 禁用IE默认的弹出菜单
         }

        private void contextMenuStrip1_Opening(object sender, CancelEventArgs e)
         {
             //! 屏幕坐标
             Point ScreenCoord = new Point(MousePosition.X, MousePosition.Y);
             //! 浏览器坐标
             Point BrowserCoord = webBrowser1.PointToClient(ScreenCoord);
             HtmlElement elem = webBrowser1.Document.GetElementFromPoint(BrowserCoord);

            //! 隐藏所有菜单项
             for (int i = 0; i < contextMenuStrip1.Items.Count; i++)
             {
                 contextMenuStrip1.Items[i].Visible = false;
             }

            //! 显示对应的菜单
             switch (elem.TagName)
             {
                 case "A":
                     //! 如果是一个超链接，则显示相关超链接的菜单项
                     openToolStripMenuItem.Visible = true;
                     openInNewTabToolStripMenuItem.Visible = true;
                     openInNewWindowToolStripMenuItem.Visible = true;
                     break;
                 case "IMG":
                     //! 如果是图片，则显示相关图片的菜单项
                     saveImageToolStripMenuItem.Visible = true;
                     setAsDesktopWallpaperToolStripMenuItem.Visible = true;
                     break;
                 default:
                     //! 其它
                     refreshToolStripMenuItem.Visible = true;
                     viewSourceToolStripMenuItem.Visible = true;
                     break;
             }
         }

        void SaveImageToolStripMenuItemClick(object sender, EventArgs e)
         {
          afrm.Show();
         }

        void SetAsDesktopWallpaperToolStripMenuItemClick(object sender, EventArgs e)
         {
          afrm.Show();
         }

        void OpenToolStripMenuItemClick(object sender, EventArgs e)
         {
          afrm.Show();
         }

        void OpenInNewTabToolStripMenuItemClick(object sender, EventArgs e)
         {
          afrm.Show();
         }

        void OpenInNewWindowToolStripMenuItemClick(object sender, EventArgs e)
         {
          afrm.Show();
         }

        void RefreshToolStripMenuItemClick(object sender, EventArgs e)
         {
          afrm.Show();
         }

        void ViewSourceToolStripMenuItemClick(object sender, EventArgs e)
         {
          afrm.Show();
         }
     }
}

转载于:https://www.cnblogs.com/lujin49/archive/2012/01/05/2312878.html