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Posts: 2
Registered: ‎10-11-2006
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Extract preview bitmap from a .DWG?

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10-11-2006 10:58 PM
How do I quickly and simply extract the preview bitmap from a DWG file using .NET/C#, having AutoCAD Mechanical 2007 installed on the client computer, nothing else?

Ideally I'm looking for something like:

Image GetDWGThumbnail(string filepath) { ... }

The function will be used in a simple file-selection-dialog, so relatively fast response time is essential (say no more than 50ms per call). I'm using the assemblies acdbmgd.dll & acmgd.dll found beside the acad.exe to communicate with AutoCAD.

I found a solution involving the native windows shell interfaces to extract the thumbnail from any given file, but that solution is less-than-simple. There must be a simpler way using the AutoCAD class libraries?

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