我只是做了一些简单的测试...有疑问给我发消息把.
使用方法
//获取选择的图形 并且保存出来
private void button2_Click( object sender, EventArgs e)
{
IList < MemoryStream > _List = gifRichTextBox1.LoadSelectFile();
for ( int i = 0 ; i != _List.Count; i ++ )
{
File.WriteAllBytes( @" C:\Temp\A " + i.ToString() + " .gif " , _List[ 0 ].ToArray());
}
}
// 添加一个GIF图形
private void button3_Click( object sender, EventArgs e)
{
gifRichTextBox1.AddFile( @" C:\Temp\0.gif " );
}
// 获取当前的RTF文字 你可以直接保存这个到数据库 或则通过SOCKET发送出去.
string _Text = "" ;
private void button1_Click( object sender, EventArgs e)
{
_Text = gifRichTextBox1.Rtf;
}
// 重新显示RTF内容
private void button4_Click( object sender, EventArgs e)
{
gifRichTextBox1.Rtf = _Text;
}
如果没有这个类..保存出的RTF数据..在其他RTF浏览的时候可能是个白色的矩形..
下面是全部的类
using System;
using System.Collections.Generic;
using System.Text;
using System.IO;
using System.Windows.Forms;
using System.Drawing;
namespace Zgke.WindowFrom.Window.Controls.UserControls
{
/// <summary>
/// RichTextBox支持 GIF图形
/// zgke@sina.com
/// qq:116149
/// </summary>
public class GifRichTextBox : RichTextBox
{
public GifRichTextBox()
{
}
/// <summary>
/// 重绘
/// </summary>
/// <param name="m"></param>
protected override void WndProc( ref Message m)
{
if (m.Msg == 0xF )
{
foreach (Control _SubControl in base .Controls)
{
_SubControl.Tag = " 1 " ;
}
GetRichTextObjRectangle();
for ( int i = 0 ; i != base .Controls.Count; i ++ )
{
if ( base .Controls[i].Tag.ToString() == " 1 " )
{
base .Controls.RemoveAt(i);
i -- ;
}
}
}
base .WndProc( ref m);
}
/// <summary>
/// 添加一个文件资源到RTF数据
/// </summary>
/// <param name="p_FileFullPath"> 文件路径 </param>
public void AddFile( string p_FileFullPath)
{
byte [] _FileBytes = File.ReadAllBytes(p_FileFullPath);
Image _Image = Image.FromStream( new MemoryStream(_FileBytes));
string _Guid = BitConverter.ToString(Guid.NewGuid().ToByteArray()).Replace( " - " , "" );
StringBuilder _RtfText = new StringBuilder( @" {\rtf1\ansi\ansicpg936\deff0\deflang1033\deflangfe2052{\fonttbl{\f0\fnil\fcharset134 \'cb\'ce\'cc\'e5;}}\uc1\pard\lang2052\f0\fs18{\object\objemb{\*\objclass Paint.Picture} " );
int _Width = _Image.Width * 15 ;
int _Height = _Image.Height * 15 ;
_RtfText.Append( @" \objw " + _Width.ToString() + @" \objh " + _Height.ToString());
_RtfText.AppendLine( @" {\*\objdata " );
_RtfText.AppendLine( @" 010500000200000007000000504272757368000000000000000000 " + BitConverter.ToString(BitConverter.GetBytes(_FileBytes.Length + 20 )).Replace( " - " , "" ));
_RtfText.Append( " 7A676B65 " + _Guid); // 标记
_RtfText.AppendLine(BitConverter.ToString(_FileBytes).Replace( " - " , "" ));
_RtfText.AppendLine( @" 0105000000000000}{\result{\pict\wmetafile0}}}} " );
base .SelectedRtf = _RtfText.ToString();
}
/// <summary>
/// 获取选择的文件
/// </summary>
/// <returns> 文件列表 </returns>
public IList < MemoryStream > LoadSelectFile()
{
IList < MemoryStream > _FileList = new List < MemoryStream > ();
int _Index = base .SelectedRtf.IndexOf( @" {\*\objdata " );
if (_Index == - 1 ) return _FileList;
while (_Index != - 1 )
{
MemoryStream _File = new MemoryStream();
_Index += 80 ;
string _LengthText = base .SelectedRtf.Substring(_Index, 8 );
int _Length = BitConverter.ToInt32( new byte [] { Convert.ToByte(_LengthText.Substring( 0 , 2 ), 16 ), Convert.ToByte(_LengthText.Substring( 2 , 2 ), 16 ), Convert.ToByte(_LengthText.Substring( 4 , 2 ), 16 ), Convert.ToByte(_LengthText.Substring( 6 , 2 ), 16 ) }, 0 );
_Index += 10 ;
string _Head = base .SelectedRtf.Substring(_Index, 8 );
if (_Head.ToUpper() == " 7A676B65 " )
{
_Index += 40 ;
_Length -= 20 ;
int _EndIndex = base .SelectedRtf.IndexOf( " 01050000 " , _Index);
int _ReadIndex = 0 ;
_FileList.Add(LoadMemoryStream( base .SelectedRtf.Substring(_Index, _EndIndex - _Index), ref _ReadIndex, _Length));
_Index = _EndIndex;
}
_Index = base .SelectedRtf.IndexOf( @" {\*\objdata " , _Index);
}
return _FileList;
}
/// <summary>
/// 获取图形或则改动PictureBox的位置
/// </summary>
/// <param name="p_Rtf"></param>
private void PointFile( string p_Rtf, Point p_StarPoint, int p_Width, int p_Height)
{
int _Index = p_Rtf.IndexOf( @" {\*\objdata " );
if (_Index == - 1 ) return ;
_Index += 80 ;
string _LengthText = p_Rtf.Substring(_Index, 8 );
int _Length = BitConverter.ToInt32( new byte [] { Convert.ToByte(_LengthText.Substring( 0 , 2 ), 16 ), Convert.ToByte(_LengthText.Substring( 2 , 2 ), 16 ), Convert.ToByte(_LengthText.Substring( 4 , 2 ), 16 ), Convert.ToByte(_LengthText.Substring( 6 , 2 ), 16 ) }, 0 );
_Index += 10 ;
string _Head = p_Rtf.Substring(_Index, 8 );
if (_Head.ToUpper() != " 7A676B65 " ) return ; // 如果不是标记出来的 就不生成PictureBox
_Index += 8 ;
string _Guid = p_Rtf.Substring(_Index, 32 );
Control _Controls = base .Controls[_Guid];
if (_Controls == null )
{
PictureBox _PictureBox = new PictureBox();
_PictureBox.Name = _Guid;
_PictureBox.Tag = " 0 " ;
_PictureBox.Location = p_StarPoint;
_PictureBox.Size = new Size(p_Width, p_Height);
_Index += 32 ;
_Length -= 20 ;
_PictureBox.Image = Image.FromStream(LoadMemoryStream(p_Rtf, ref _Index,_Length));
base .Controls.Add(_PictureBox);
}
else
{
_Controls.Location = p_StarPoint;
_Controls.Size = new Size(p_Width, p_Height);
_Controls.Tag = " 0 " ;
}
}
/// <summary>
/// 根据RTF保存的内容获取内存流
/// </summary>
/// <param name="p_Text"> RTF </param>
/// <param name="p_Index"> 开始位置 </param>
/// <param name="p_Count"> 读取数量 </param>
/// <returns> 内存流 </returns>
private MemoryStream LoadMemoryStream( string p_Text, ref int p_Index, int p_Count)
{
MemoryStream _File = new MemoryStream();
char [] _Text = p_Text.ToCharArray();
for ( int i = 0 ; i != p_Count; i ++ )
{
if (_Text[p_Index] == ' \r ' && _Text[p_Index + 1 ] == ' \n ' )
{
i -- ;
}
else
{
_File.WriteByte(Convert.ToByte(_Text[p_Index].ToString() + _Text[p_Index + 1 ].ToString(), 16 ));
}
p_Index += 2 ;
}
return _File;
}
/// <summary>
/// 获取RICHTEXTBOX所有图形的位置
/// </summary>
/// <param name="p_RichTextBox"> RICHTEXTBOX </param>
/// <returns> 位置信息 </returns>
private void GetRichTextObjRectangle()
{
RichTextBox _RichText = new RichTextBox();
_RichText.Rtf = base .Rtf;
int _Count = base .Text.Length;
for ( int i = 0 ; i != _Count; i ++ )
{
if ( base .Text[i] == ' ' )
{
_RichText.Select(i, 1 );
if (_RichText.SelectionType.ToString() == " Object " )
{
Point _StarPoint = base .GetPositionFromCharIndex(i);
System.Text.RegularExpressions.Regex _RegexWidth = new System.Text.RegularExpressions.Regex( @" (?<=\\objw)[^\\]+ " );
System.Text.RegularExpressions.Regex _RegexHeight = new System.Text.RegularExpressions.Regex( @" (?<=\\objh)[^{]+ " );
int _Width = 0 ;
int _Height = 0 ;
if ( int .TryParse(_RegexWidth.Match(_RichText.SelectedRtf).Value, out _Width) && int .TryParse(_RegexHeight.Match(_RichText.SelectedRtf).Value, out _Height))
{
_Width = _Width / 15 ;
_Height = _Height / 15 ;
PointFile(_RichText.SelectedRtf, _StarPoint, _Width, _Height);
}
}
}
}
_RichText.Dispose();
}
}
}