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
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private void button2_Click(object sender, EventArgs e)
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{
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IList<MemoryStream> _List = gifRichTextBox1.LoadSelectFile();
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for (int i = 0; i != _List.Count; i++)
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{
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File.WriteAllBytes(@"C:\Temp\A" + i.ToString() + ".gif", _List[0].ToArray());
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}
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}
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//添加一个GIF图形
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private void button3_Click(object sender, EventArgs e)
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{
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gifRichTextBox1.AddFile(@"C:\Temp\0.gif");
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}
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//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.
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string _Text = "";
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private void button1_Click(object sender, EventArgs e)
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{
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_Text = gifRichTextBox1.Rtf;
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}
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//重新显示RTF内容
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private void button4_Click(object sender, EventArgs e)
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{
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gifRichTextBox1.Rtf = _Text;
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}
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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..
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下面是全部的类
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.IO;
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using System.Windows.Forms;
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using System.Drawing;
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namespace Zgke.WindowFrom.Window.Controls.UserControls
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{
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///
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/// RichTextBox支持 GIF图形
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/// zgke@sina.com
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/// qq:116149
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///
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public class GifRichTextBox : RichTextBox
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{
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public GifRichTextBox()
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{
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}
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///
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/// 重绘
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///
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///
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protected override void WndProc(ref Message m)
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{
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if (m.Msg == 0xF)
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{
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foreach (Control _SubControl in base.Controls)
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{
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_SubControl.Tag = "1";
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}
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GetRichTextObjRectangle();
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for (int i = 0; i != base.Controls.Count; i++)
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{
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if (base.Controls[i].Tag.ToString() == "1")
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{
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base.Controls.RemoveAt(i);
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i--;
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}
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}
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}
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base.WndProc(ref m);
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}
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///
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/// 添加一个文件资源到RTF数据
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///
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/// 文件路径
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public void AddFile(string p_FileFullPath)
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{
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byte[] _FileBytes = File.ReadAllBytes(p_FileFullPath);
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Image _Image = Image.FromStream(new MemoryStream(_FileBytes));
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string _Guid = BitConverter.ToString(Guid.NewGuid().ToByteArray()).Replace("-", "");
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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}");
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int _Width = _Image.Width * 15;
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int _Height = _Image.Height * 15;
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_RtfText.Append(@"\objw" + _Width.ToString() + @"\objh" + _Height.ToString());
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_RtfText.AppendLine(@"{\*\objdata");
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_RtfText.AppendLine(@"010500000200000007000000504272757368000000000000000000" + BitConverter.ToString(BitConverter.GetBytes(_FileBytes.Length + 20)).Replace("-", ""));
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_RtfText.Append("7A676B65" + _Guid); //标记
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_RtfText.AppendLine(BitConverter.ToString(_FileBytes).Replace("-", ""));
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_RtfText.AppendLine(@"0105000000000000}{\result{\pict\wmetafile0}}}}");
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base.SelectedRtf = _RtfText.ToString();
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}
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///
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/// 获取选择的文件
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///
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/// 文件列表
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public IList<MemoryStream> LoadSelectFile()
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{
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IList<MemoryStream> _FileList = new List<MemoryStream>();
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int _Index = base.SelectedRtf.IndexOf(@"{\*\objdata");
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if (_Index == -1) return _FileList;
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while (_Index != -1)
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{
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MemoryStream _File = new MemoryStream();
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_Index += 80;
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string _LengthText = base.SelectedRtf.Substring(_Index, 8);
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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);
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_Index += 10;
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string _Head = base.SelectedRtf.Substring(_Index, 8);
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if (_Head.ToUpper() == "7A676B65")
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{
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_Index += 40;
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_Length -= 20;
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int _EndIndex = base.SelectedRtf.IndexOf("01050000", _Index);
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int _ReadIndex = 0;
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_FileList.Add(LoadMemoryStream(base.SelectedRtf.Substring(_Index, _EndIndex - _Index), ref _ReadIndex, _Length));
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_Index = _EndIndex;
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}
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_Index = base.SelectedRtf.IndexOf(@"{\*\objdata", _Index);
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}
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return _FileList;
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}
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///
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/// 获取图形或则改动PictureBox的位置
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///
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///
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private void PointFile(string p_Rtf, Point p_StarPoint, int p_Width, int p_Height)
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{
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int _Index = p_Rtf.IndexOf(@"{\*\objdata");
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if (_Index == -1) return;
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_Index += 80;
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string _LengthText = p_Rtf.Substring(_Index, 8);
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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);
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_Index += 10;
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string _Head = p_Rtf.Substring(_Index, 8);
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if (_Head.ToUpper() != "7A676B65") return; //如果不是标记出来的 就不生成PictureBox
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_Index += 8;
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string _Guid = p_Rtf.Substring(_Index, 32);
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Control _Controls = base.Controls[_Guid];
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if (_Controls == null)
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{
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PictureBox _PictureBox = new PictureBox();
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_PictureBox.Name = _Guid;
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_PictureBox.Tag = "0";
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_PictureBox.Location = p_StarPoint;
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_PictureBox.Size = new Size(p_Width, p_Height);
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_Index += 32;
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_Length -= 20;
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_PictureBox.Image = Image.FromStream(LoadMemoryStream(p_Rtf, ref _Index,_Length));
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base.Controls.Add(_PictureBox);
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}
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else
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{
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_Controls.Location = p_StarPoint;
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_Controls.Size = new Size(p_Width, p_Height);
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_Controls.Tag = "0";
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}
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}
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///
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/// 根据RTF保存的内容获取内存流
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///
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/// RTF
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/// 开始位置
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/// 读取数量
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/// 内存流
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private MemoryStream LoadMemoryStream(string p_Text,ref int p_Index,int p_Count)
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{
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MemoryStream _File =new MemoryStream();
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char[] _Text = p_Text.ToCharArray();
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for (int i = 0; i != p_Count; i++)
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{
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if (_Text[p_Index] == '\r' && _Text[p_Index + 1] == '\n')
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{
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i--;
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}
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else
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{
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_File.WriteByte(Convert.ToByte(_Text[p_Index].ToString() + _Text[p_Index + 1].ToString(), 16));
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}
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p_Index += 2;
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}
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return _File;
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}
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///
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/// 获取RICHTEXTBOX所有图形的位置
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///
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/// RICHTEXTBOX
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/// 位置信息
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private void GetRichTextObjRectangle()
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{
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RichTextBox _RichText = new RichTextBox();
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_RichText.Rtf = base.Rtf;
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int _Count = base.Text.Length;
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for (int i = 0; i != _Count; i++)
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{
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if (base.Text[i] == ' ')
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{
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_RichText.Select(i, 1);
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if (_RichText.SelectionType.ToString() == "Object")
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{
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Point _StarPoint = base.GetPositionFromCharIndex(i);
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System.Text.RegularExpressions.Regex _RegexWidth = new System.Text.RegularExpressions.Regex(@"(?<=\\objw)[^\\]+");
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System.Text.RegularExpressions.Regex _RegexHeight = new System.Text.RegularExpressions.Regex(@"(?<=\\objh)[^{]+");
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int _Width = 0;
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int _Height = 0;
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if (int.TryParse(_RegexWidth.Match(_RichText.SelectedRtf).Value, out _Width) && int.TryParse(_RegexHeight.Match(_RichText.SelectedRtf).Value, out _Height))
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{
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_Width = _Width / 15;
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_Height = _Height / 15;
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PointFile(_RichText.SelectedRtf, _StarPoint, _Width, _Height);
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}
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}
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}
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}
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_RichText.Dispose();
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}
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}
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}
另加一个检测GIF文件是否被损坏的方法:
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class Utility
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{
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//Bonus. A simple check on the GIF files because some may contain "bad" data and crash the program.
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public static bool IsImageCorrupted(Image img)
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{
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bool itis = false;
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try
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{
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if (!ImageAnimator.CanAnimate(img))
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{
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return itis;
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}
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int frames = img.GetFrameCount(System.Drawing.Imaging.FrameDimension.Time);
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if (frames <= 1)
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{
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return itis;
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}
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byte[] times = img.GetPropertyItem(0x5100).Value;
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int frame = 0;
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for (; ; )
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{
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int dur = BitConverter.ToInt32(times, 4 * frame);
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if (++frame >= frames) break;
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img.SelectActiveFrame(System.Drawing.Imaging.FrameDimension.Time, frame);
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}
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}
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catch (Exception ex)
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{
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throw ex;
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}
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return itis;
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}
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}
转载着修改自博客:
http://www.cnblogs.com/jxsoft/archive/2011/06/22/2087435.html
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