CODE-用C#將Word內嵌圖另存成JPG檔

using System;

using System.Collections.Generic;

using System.Text;

using System.Drawing;

using System.Windows.Forms;

using System.IO;

using System.Drawing.Imaging;

//記得要Reference Microsoft Word 1*.0 Object Library

using Microsoft.Office.Interop.Word;

namespace WordPicExtract

{

    class Program

    {

        static void Main(string[] args)

        {

            ApplicationClass wordApp = new ApplicationClass();

            object missing = System.Reflection.Missing.Value;

            try

            {

                object fileName = args[0];

                int w = int.Parse(args[1]);

                int h = int.Parse(args[2]);

                if (!File.Exists(fileName.ToString())) {

                    Console.WriteLine("Can't find file[" + fileName + "]");

                    return;

                }

                //Convert to full path, or Word can't find it

                //Path.GetFullPath可以將相對路徑轉成絕對路徑

                fileName = Path.GetFullPath(fileName.ToString());

                object readOnly = true;

                object isVisible = true;

                Console.WriteLine("File [" + fileName + "] opening...");

                //用C#操作Word DOM的小缺點，沒用到的參數要傳入ref missing

                Document doc = wordApp.Documents.Open(

                    ref fileName, ref missing, ref readOnly, ref missing,

                    ref missing, ref missing, ref missing, ref missing,

                    ref missing, ref missing, ref missing, ref isVisible,

                    ref missing, ref missing, ref missing, ref missing);

                if (doc.InlineShapes.Count > 0)

                {

                    //由Word裡的陣列是從1開始的

                    InlineShape shp = doc.InlineShapes[1];

                    //Google上很多文章都用Clipboard把InlineShape轉成Image

                    //但我在x64上C#抓不到Word裡複製的內容

                    //所以改用Metafile類別

                    MemoryStream ms = new MemoryStream(

                        (byte[])shp.Range.EnhMetaFileBits);

                    Metafile mf = new Metafile(ms);

                    //用縮圖尺寸限制算出寬、高縮放比例

                    double ratioW = Convert.ToDouble(mf.Width) / w;

                    double ratioH = Convert.ToDouble(mf.Height) / h;

                    //需要縮小

                    if (ratioW > 1 || ratioH > 1)

                    {

                        //保持寬/高比例

                        if (ratioW < ratioH)

                            w = Convert.ToInt32(

                                h * (Convert.ToDouble(mf.Width) / mf.Height));

                        else

                            h = Convert.ToInt32(

                                w * (Convert.ToDouble(mf.Height) / mf.Width));

                    }

                    else

                    {

                        //不需縮小，維持原尺寸

                        w = mf.Width; h = mf.Height;

                    }

                    //用Word檔案Rename成.jpg

                    string imgFileName = 

                        Path.ChangeExtension(fileName.ToString(), "jpg");

                    //利用Image.GetThumbnailImage產生縮圖

                    Image thumbnail = mf.GetThumbnailImage(w, h, 

                        new Image.GetThumbnailImageAbort(ThumbnailCallback), 

                        IntPtr.Zero);

                    thumbnail.Save(imgFileName);

                    Console.WriteLine("Image [" + imgFileName + "] saved!");

                }

                doc.Close(ref missing, ref missing, ref missing);

            }

            catch (Exception ex)

            {

                Console.WriteLine("Error:" + ex.Message);

            }

            finally

            {

                wordApp.Quit(ref missing, ref missing, ref missing);

            }

        }

        public static bool ThumbnailCallback()

        {

            return false;

        }

    }

}