如何提取RTF中的图片
已知道RTF格式中的图片文件是以metafile格式存在的,应该如何从中取出来．有哪位大侠做过？（能否提供一下代码）
急盼！！
--------------------编程问答-------------------- rtf是纯文本格式的，你可以用ultraEdit直接看的，rtf支持好几种文件格式，但最后都直接把图形文件的二进制转换成ascii码显示出来了，你转回去就好。 --------------------编程问答-------------------- 扫IMG的文件头,读IMG格式 --------------------编程问答-------------------- Jamestan(情商蛋蛋)
谢谢你的提示.
我是想把RTF中带的图片从RTF中提取出来以(转换成BMP格式保存),就是如何把metafile格式向量图转换成位图.能否讲的清楚点.
谢谢
--------------------编程问答-------------------- {\*\generator Msftedit 5.41.15.1507;}\viewkind4\uc1\pard\lang2052\f0\fs20{\object\objemb{\*\objclass Paint.Picture}\objw7678\objh5759{\*\objdata
01050000
02000000
07000000
50427275736800
00000000
00000000
40000900
424d36000900000000003600000028000000000200008001000001001800000000000000090000
000000000000000000000000000000ffffffffffffffffffffffffffffffffffffffffffffffff
ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff
......
ffffffffffffffffffffffffffffffff030000000000
}}}\par
从424d开始一直到}}}\par的内容都是bmp的文件内容，你每两个字节读出来，然后转换成16进制，用二进制模式写入bmp文件就可以了。 --------------------编程问答-------------------- Jamestan(情商蛋蛋)
RTF中的图不是已经是16进制,为何还要每两个字节读出来，然后转换成16进制.
例424d已经是16进制，为什么还要再转换成16进制．
这一点不明白请指教一下
--------------------编程问答-------------------- 他说的是把字符串按16进制转成数字....
"424d" ----> 0x424d --------------------编程问答-------------------- 唉,没法还原出来.
能否提供一下部分代码.参考一下
谢谢 --------------------编程问答-------------------- 强烈关注中 --------------------编程问答-------------------- 这个问题我也想知道，不知道有人做出来了没？ --------------------编程问答-------------------- 这个问题有人搞定了吗？偶也碰到这个问题啦啊 --------------------编程问答-------------------- 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();
}
}
}
--------------------编程问答-------------------- 别让这个好帖沉了！ --------------------编程问答-------------------- 赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫赫
补充：.NET技术 , C#
