获取任何文件的缩略图，包括Windows XP/Vista上的SolidWorks
获取任何文件的缩略图，包括Windows XP/Vista上的SolidWorks
提问于 2012-08-10 00:39:26
在每个已安装的操作系统中都有大量的内置ThumbnailProviders。由于这些提供程序，Windows能够显示许多文件的缩略图。例如，Windows Explorer可以显示*.jpg文件的内容，但也可以显示来自Solidworks *.sldprt文件的内容(如果安装了SolidWorks )。
但是有没有办法弄到这些缩略图呢？我尝试过使用Windows API CodecPack来管理它，但我只在Windows7上成功了。
ShellFile shellFile = ShellFile.FromFilePath(filePath);
Bitmap shellThumb = shellFile.Thumbnail.Bitmap;问题是:在Windows XP/Vista上，有没有其他可用的方法来获得任何文件的缩略图？我真的很绝望..。
回答 2
Stack Overflow用户
发布于 2013-01-18 21:14:42
有几种方法：
1)使用库OpenMCDF。Solidworks文件是Compound document的，所以访问它的内容-是解析文件。
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)将库EModelView.dll添加为控件并放置到窗体中。
OpenFileDialog dialog = new OpenFileDialog();
if (dialog.ShowDialog() == DialogResult.OK)
{
axEModelViewControl1.OpenDoc(dialog.FileName.ToString(), false, false, true, "");
}3)使用SWExplorer库(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)使用库文档管理器(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();
}Stack Overflow用户
发布于 2013-01-08 03:42:37
可以使用非托管windows shell方法来获取缩略图。
Here is the code (not a small one)
但结果远非尽善尽美。
- 调试非常困难，未指明的错误很常见，目标机器上必须有特定的文件读取器(例如pdf-
- pdfs，我没有在SolidWorks)
- can上尝试过)只在Windows
- performance issue
- thumbnails低质量下工作(尝试过pdf)
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/11888025
复制相关文章
相似问题
腾讯云开发者
