Getting Thumbnails from PDF

Hello,
When we use Acrobat Professional to "Create PDF" using "From File" , Acrobat is internally creating the thumbnails for each page and storing these information in one of the layers. I would like to know how to extract those already generated Thumbnail images from PDF using ACrobat SDK.
Questions:
1. Is there any mechanism to achieve this using Acrobat SDK?
Performance is the criteria I am looking for as far as extracting the thumbnails are concerned.As Acrobat has already created the thumbnail data, I would like to reuse/get it which I feel would enhance the performance.
2. I tried PdPage.CopyToClipbpoard() which would give a thumbnail image but its not matching the performance criteria. In this approach we are re-creating the thumbnails anyway which I would not prefer.
Please help.
Thanks
Praveen

Your first statement is incorrect. Acrobat hasn't generated embedded thumbnails of pages since version 6.
You mention, CopyToClipboard(), which implies to me that you are trying to do this through the COM interfaces - those are going to be slower than working with the plugin interfaces, but plugins require C/C++. If you do stick with COM, then you should look at the drawing interfaces used by the Static and Active samples in the SDK - those will be much faster than copy to clipboard.

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