获取任何文件的缩略图，不仅图像文件，在Windows XP / Vista的 [英] Get thumbnail of any file, not only image files on Windows XP/Vista

问题描述

有很多的每一个安装的操作系统中内置的ThumbnailProviders。由于这些供应商的Windows能够显示的多个文件的缩略图。例如Windows资源管理器可以显示的* .jpg文件的内容，但是从SolidWorks * .SLDPRT文件了（如果安装有SolidWorks）。

There is a lot of build-in ThumbnailProviders inside every installed OS. Due to these providers Windows is able to show Thumbnail of many files. For example Windows Explorer can show content of *.jpg files, but from Solidworks *.sldprt files too (If SolidWorks is installed).

但是，有没有什么办法让这些缩略图？从来就试图管理这个使用Windows API codecPack，但我成功了仅在Windows 7。

But is there any way to get these thumbnails? I´ve tried to manage this using Windows API CodecPack, but I succeeded only on Windows 7.

ShellFile shellFile = ShellFile.FromFilePath(filePath);                
Bitmap shellThumb = shellFile.Thumbnail.Bitmap;

问题是：是否有任何其他可用的办法让在Windows XP / Vista中注册的缩略图提供任何文件的缩略图？ I'm真的绝望了......

Question is: is there any other usable way to get Thumbnail of any file with registered Thumbnail provider on Windows XP/Vista? I´m really desperate...

推荐答案

有几种方式：

1）随着库 OpenMCDF 。 Solidworks的文件是复合文档，以便访问其内容 - 被解析的文件

1) With library OpenMCDF. Solidworks file is Compound document so access to its content - is parsing the file.

 OpenFileDialog dialog = new OpenFileDialog();    
 dialog.InitialDirectory = Application.StartupPath;  
 if (dialog.ShowDialog() == DialogResult.OK)  
 {  
     string STORAGE_NAME = dialog.FileName.ToString();  
     CompoundFile cf = new CompoundFile(STORAGE_NAME);  
     CFStream st = cf.RootStorage.GetStream("PreviewPNG");  
     byte[] buffer = st.GetData();  
     var ms = new MemoryStream(buffer.ToArray());  
     pictureBox1.Image = Image.FromStream(ms);  
  }  

2）随着库EModelView.dll添加作为对照，并放置到窗体。

2) With library EModelView.dll to be added as a control and placed to the Form.

    OpenFileDialog dialog = new OpenFileDialog();
        if (dialog.ShowDialog() == DialogResult.OK)
        {
            axEModelViewControl1.OpenDoc(dialog.FileName.ToString(), false, false, true, "");
        }

3）随着SWExplorer库（WPF previewFlowControl）

3) With SWExplorer library (wpfPreviewFlowControl)

        OpenFileDialog dialog = new OpenFileDialog();
        if (dialog.ShowDialog() == DialogResult.OK)
        {
            string sDocFileName = dialog.FileName.ToString();
            wpfThumbnailCreator pvf;
            pvf = new wpfThumbnailCreator();
            System.Drawing.Size size = new Size();
            size.Width = 200;
            size.Height = 200;
            pvf.DesiredSize = size;
            System.Drawing.Bitmap pic = pvf.GetThumbNail(sDocFileName);
            pictureBox1.Image = pic;
        }

3）在库文件管理器（SolidWorks.Interop.swdocumentmgr）

3) With library Document Manager (SolidWorks.Interop.swdocumentmgr)

         OpenFileDialog dialog = new OpenFileDialog();
        if (dialog.ShowDialog() == DialogResult.OK)
        {
            string sDocFileName = dialog.FileName.ToString();
            SwDMClassFactory swClassFact = default(SwDMClassFactory);
            SwDMApplication swDocMgr = default(SwDMApplication);
            SwDMDocument swDoc = default(SwDMDocument);
            SwDMConfigurationMgr swCfgMgr = default(SwDMConfigurationMgr);
            string[] vCfgNameArr = null;
            SwDMConfiguration7 swCfg = default(SwDMConfiguration7);
            IPictureDisp pPreview = default(IPictureDisp);
            SwDmDocumentType nDocType = 0;
            SwDmDocumentOpenError nRetVal = 0;
            SwDmPreviewError nRetVal2 = 0;
            Image image = default(Image);

            //Access to interface
            swClassFact = new SwDMClassFactory();
            swDocMgr = (SwDMApplication)swClassFact.GetApplication("Post your code here");
            swDoc = (SwDMDocument)swDocMgr.GetDocument(sDocFileName, nDocType, false, out nRetVal);
            Debug.Assert(SwDmDocumentOpenError.swDmDocumentOpenErrorNone == nRetVal);
            swCfgMgr = swDoc.ConfigurationManager;

            pathLabel.Text = "Path to file: " + swDoc.FullName;
            configLabel.Text = "Active config: " + swCfgMgr.GetActiveConfigurationName();
            vCfgNameArr = (string[])swCfgMgr.GetConfigurationNames();

            foreach (string vCfgName in vCfgNameArr)
            {
                //get preview
                swCfg = (SwDMConfiguration7)swCfgMgr.GetConfigurationByName(vCfgName);
                pPreview = (IPictureDisp)swCfg.GetPreviewPNGBitmap(out nRetVal2);
                image = Support.IPictureDispToImage(pPreview);
                //insert to picturebox
                pictureBox1.BackgroundImage = image;
            }
            swDoc.CloseDoc();
        }

这篇关于获取任何文件的缩略图，不仅图像文件，在Windows XP / Vista的的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！