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Hi, It seems MSDN does not have sufficient documentation on IExtractImage ( shell extension for generating custom thumbnail). So far, I already. The IExtractImage interface is used to request a thumbnail image from a Shell C# Definition: You can use this enum for the IExtractImage. I believe nearly all IExtractImage samples (you find searching) are based on this article’s code, due to naming convention, comments, and so on, that are carried.

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C# (CSharp) IExtractImage Code Examples

Please review the following specific error details and modify your source code appropriately. Close this window and log in. You can simply compile the C code to a class library and use it in your VB. Hope this helps RE: High dots per inch dpi sensitivity means that the pixel dimensions of the thumbnail automatically adjust for the greater dpi.

Steve McLenithan May 3: There is some delphi code which I cannot translate to vb.

Any ideas what could cause this? Nope, you’re right – #c not what I’m looking for: Other applications can consume your thumbnail as well. I have registered the dll file Thanks for your help!

: IExtractImage (Interfaces)

Originally Eixtractimage by Xancholy. An image is never scaled up in size as was the case in previous versions of Windows. I have three question. For example, a text file’s thumbnail should show a miniature version of the document, including its text. In that folder there’s a PhilipSoft. I’ve not used it and it is rather useless. I iextravtimage register it on my server shared hosting.


An article describing a set of ASP. Finally the thumbnail is sent to the response as a JPEG file: Philipos Sakellaropoulos 7-Jan We appreciate your feedback. You’re missing the parameter for Extract and return value for GetLocation. For ThumbnailSize set the value in pixels, with the default being My problem is iiextractimage the shell extension work properly.

For each filename in the virtual directory VPath to be shown, a new row is added to the table. Many answers seem to be centered around web page thumbnails, or scaling an image.

DataItem [ ” Filename” ]: What I want to do is retrieve the thumbnail image from any file on the system via the shell iexrractimage C. This is much more involved than just scaling an image. Help on using IExtractImage Forgot to close this thread.

If it exists, it retrieves it using the key, otherwise it uses cc# services of the ThumbGenerator class to get the thumbnail. Copy the C code and paste it in your project. Potential adornments are declared in the registry as part of the file association entry as shown here:. I remembered how GC would move IntPtr rendering them useless.


The thumbnails are working now and explorer no longer crashes. However, IExtractImage is not supported in the Details pane.

The thumbnail images in this cache are stored in a set of discrete sizes. Compile error also jeffluckett 1-Mar I don’t know how iextraxtimage call the function Thumbnail overlays, a small image displayed over the lower right corner of the thumbnail, provide an opportunity for developers to apply brand identification to their thumbnails.

Generating the thumbnail is the easy part.

To enable this, cached thumbnails are associated with a key returned by the GetUniqueThumbName function. ThumbUrl is a function that creates the link to the thumbnail the parametrised HTTP handler or the saved thumbnail if SaveThumbnails is true. Zero, hExtractImage ‘Free the pidls.

An ASP.NET thumbnail solution

Assert false, “Object has been disposed. Since i don’t have the VS. The if block is necessary to test for processor type if 32 or 64 bit. I don’t want to ixtractimage, render, and make thumbnails myself, because Windows already knows how.