实例介绍
【实例简介】
【实例截图】
【核心代码】
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.IO;
using System.Runtime.InteropServices;
namespace HtmlEditor
{
/// <summary>
/// Form1 的摘要说明。
/// </summary>
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TabControl tabWb;
private System.Windows.Forms.TabPage tabPage;
private AxSHDocVw.AxWebBrowser axWb;
private System.Windows.Forms.StatusBar statusBar1;
private System.Windows.Forms.Button button1;
private System.Windows.Forms.TabPage tabPage1;
private System.Windows.Forms.Button button3;
private System.Windows.Forms.Button button2;
private System.Windows.Forms.Button button4;
/// <summary>
/// 必需的设计器变量。
/// </summary>
private System.ComponentModel.Container components = null;
public Form1()
{
//
// Windows 窗体设计器支持所必需的
//
InitializeComponent();
//
// TODO: 在 InitializeComponent 调用后添加任何构造函数代码
//
}
/// <summary>
/// 清理所有正在使用的资源。
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows 窗体设计器生成的代码
/// <summary>
/// 设计器支持所需的方法 - 不要使用代码编辑器修改
/// 此方法的内容。
/// </summary>
private void InitializeComponent()
{
System.Resources.ResourceManager resources = new System.Resources.ResourceManager(typeof(Form1));
this.tabWb = new System.Windows.Forms.TabControl();
this.tabPage = new System.Windows.Forms.TabPage();
this.axWb = new AxSHDocVw.AxWebBrowser();
this.tabPage1 = new System.Windows.Forms.TabPage();
this.statusBar1 = new System.Windows.Forms.StatusBar();
this.button1 = new System.Windows.Forms.Button();
this.button3 = new System.Windows.Forms.Button();
this.button2 = new System.Windows.Forms.Button();
this.button4 = new System.Windows.Forms.Button();
this.tabWb.SuspendLayout();
this.tabPage.SuspendLayout();
((System.ComponentModel.ISupportInitialize)(this.axWb)).BeginInit();
this.SuspendLayout();
//
// tabWb
//
this.tabWb.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.tabWb.Controls.Add(this.tabPage);
this.tabWb.Controls.Add(this.tabPage1);
this.tabWb.Location = new System.Drawing.Point(-1, 36);
this.tabWb.Name = "tabWb";
this.tabWb.SelectedIndex = 0;
this.tabWb.Size = new System.Drawing.Size(657, 464);
this.tabWb.TabIndex = 1;
//
// tabPage
//
this.tabPage.Controls.Add(this.axWb);
this.tabPage.Location = new System.Drawing.Point(4, 21);
this.tabPage.Name = "tabPage";
this.tabPage.Size = new System.Drawing.Size(649, 439);
this.tabPage.TabIndex = 0;
//
// axWb
//
this.axWb.ContainingControl = this;
this.axWb.Dock = System.Windows.Forms.DockStyle.Fill;
this.axWb.Enabled = true;
this.axWb.Location = new System.Drawing.Point(0, 0);
this.axWb.OcxState = ((System.Windows.Forms.AxHost.State)(resources.GetObject("axWb.OcxState")));
this.axWb.Size = new System.Drawing.Size(649, 439);
this.axWb.TabIndex = 1;
//
// tabPage1
//
this.tabPage1.Location = new System.Drawing.Point(4, 21);
this.tabPage1.Name = "tabPage1";
this.tabPage1.Size = new System.Drawing.Size(649, 439);
this.tabPage1.TabIndex = 1;
this.tabPage1.Text = "编辑";
//
// statusBar1
//
this.statusBar1.Location = new System.Drawing.Point(0, 499);
this.statusBar1.Name = "statusBar1";
this.statusBar1.ShowPanels = true;
this.statusBar1.Size = new System.Drawing.Size(652, 22);
this.statusBar1.TabIndex = 3;
//
// button1
//
this.button1.Location = new System.Drawing.Point(12, 4);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(88, 24);
this.button1.TabIndex = 4;
this.button1.Text = "加粗";
this.button1.Click = new System.EventHandler(this.button1_Click);
//
// button3
//
this.button3.Location = new System.Drawing.Point(104, 4);
this.button3.Name = "button3";
this.button3.Size = new System.Drawing.Size(116, 23);
this.button3.TabIndex = 6;
this.button3.Text = "滚动条颜色";
this.button3.Click = new System.EventHandler(this.button3_Click);
//
// button2
//
this.button2.Location = new System.Drawing.Point(228, 4);
this.button2.Name = "button2";
this.button2.Size = new System.Drawing.Size(104, 23);
this.button2.TabIndex = 7;
this.button2.Text = "查看源码TEXT";
this.button2.Click = new System.EventHandler(this.button2_Click);
//
// button4
//
this.button4.Location = new System.Drawing.Point(340, 4);
this.button4.Name = "button4";
this.button4.Size = new System.Drawing.Size(104, 23);
this.button4.TabIndex = 8;
this.button4.Text = "查看源码HTML";
this.button4.Click = new System.EventHandler(this.button4_Click);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(6, 14);
this.ClientSize = new System.Drawing.Size(652, 521);
this.Controls.Add(this.button4);
this.Controls.Add(this.button2);
this.Controls.Add(this.button3);
this.Controls.Add(this.button1);
this.Controls.Add(this.statusBar1);
this.Controls.Add(this.tabWb);
this.Name = "Form1";
this.Text = "HTML 编辑器";
this.Load = new System.EventHandler(this.Form1_Load);
this.tabWb.ResumeLayout(false);
this.tabPage.ResumeLayout(false);
((System.ComponentModel.ISupportInitialize)(this.axWb)).EndInit();
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// 应用程序的主入口点。
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
/********************************
* 初始化浏览器状态
* 指向about:blank
* *****************************/
private void Form1_Load(object sender, System.EventArgs e) {
object obj = null;
this.Show();
this.axWb.Navigate("about:blank",ref obj,ref obj,ref obj,ref obj);
//等待完成动作
while(axWb.ReadyState < SHDocVw.tagREADYSTATE.READYSTATE_INTERACTIVE)
Application.DoEvents();
//初始化html编辑器
InitHtmlEditor();
}
/*******************************
* 这里是核心方法
* 完全调用IE自身的html编辑功能
* 可以看到，我采用了一种兼容的
* 方式，用Frame（框架），这样
* 的话，默认安装的Windows 98都
* 支持html编辑功能；
* 关键代码如下：
* frame.document.designMode = "on";
* 表示开启设计模式
******************************/
private void InitHtmlEditor(){
string sw = "";
sw = "<html>\r\n";
sw = "<script language=javascript>\r\n";
sw = " function loadSet(){\r\n";
sw = " var frame=document.getElementById(\"i-frame\").contentWindow;\r\n";
sw = " frame.document.designMode = \"on\";\r\n";
sw = " frame.document.open();\r\n";
sw = " frame.document.write(\"<html><font color=red>hello 大家好啊！<br>我是S.F. <br>";
sw = " <a href=\\\"http://www.cnblogs.com/chinasf\\\">欢迎访问我的weblog</a></font></html>\");\r\n";
sw = " frame.document.close();\r\n";
sw = " }\r\n";
sw = " function setBlod(obj){\r\n";
sw = " document.getElementById(\"i-frame\").contentWindow.document.execCommand(\"bold\");\r\n";
sw = " }\r\n";
sw = "</script>\r\n";
//这里加入了一个html的button，也就是说，你可以把web模式的html编辑器的代码完全copy进来
sw = "<body onload=\"loadSet()\" scroll=\"yes\"><button onclick=\"setBlod(this);\">Blod</button>\r\n";
sw = "<iframe id=\"i-frame\" frameBorder=\"1\" width=\"640\" height=\"480\"></iframe>\r\n";
sw = "</body></html>\r\n";
//写入浏览器
WriteHtml(sw);
}
private void WriteHtml(string s){
//内存流，用于转换string
MemoryStream ms = new MemoryStream();
try{
byte[] htmlcode = System.Text.Encoding.Default.GetBytes(s);
ms.Write(htmlcode,0,htmlcode.Length);
Stream dataStream = ms;
//恢复指针位置
dataStream.Seek(0,0);
if(axWb.Document!=null){
//转换接口，并转换为IStream
(axWb.Document as UnsafeNativeMethods.IPersistStreamInit).Load(new UnsafeNativeMethods.ComStreamFromDataStream(dataStream));
}
}finally{
ms.Close();
}
}
private void button1_Click(object sender, System.EventArgs e) {
//获取document,在IHTMLDocument2中取得桢
mshtml.IHTMLDocument3 idoc = (mshtml.IHTMLDocument3)axWb.Document;
mshtml.IHTMLFrameBase2 fb= (mshtml.IHTMLFrameBase2)idoc.getElementById("i-frame");
object obj=null;
fb.contentWindow.document.execCommand("bold",true,obj);
}
private void button3_Click(object sender, System.EventArgs e) {
//获取document,在IHTMLDocument2中才有body.style
mshtml.IHTMLDocument2 idoc = (mshtml.IHTMLDocument2)axWb.Document;
//指定为IHTMLStyle3，才可以定制滚动条颜色
mshtml.IHTMLStyle3 istyle = (mshtml.IHTMLStyle3)idoc.body.style;
istyle.scrollbarArrowColor = "#0099FF";
istyle.scrollbar3dLightColor = "#FFFFFF";
istyle.scrollbarDarkShadowColor = "#0099FF";
istyle.scrollbarFaceColor = "#99CCFF";
istyle.scrollbarHighlightColor = "#0099FF";
istyle.scrollbarShadowColor = "#0099FF";
istyle.scrollbarTrackColor = "#FFFFFF";
}
private void button2_Click(object sender, System.EventArgs e) {
//查看源码,文本方式
mshtml.IHTMLDocument3 idoc = (mshtml.IHTMLDocument3)axWb.Document;
mshtml.IHTMLFrameBase2 fb= (mshtml.IHTMLFrameBase2)idoc.getElementById("i-frame");
MessageBox.Show(fb.contentWindow.document.body.innerText);
}
private void button4_Click(object sender, System.EventArgs e) {
//查看源码,HTML方式
mshtml.IHTMLDocument3 idoc = (mshtml.IHTMLDocument3)axWb.Document;
mshtml.IHTMLFrameBase2 fb= (mshtml.IHTMLFrameBase2)idoc.getElementById("i-frame");
MessageBox.Show(fb.contentWindow.document.body.innerHTML);
}
}
}
标签： HTML
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