从CAD图(* .dwg)制作缩略图 [英] making a thumbnail image from a CAD drawing (*.dwg)

问题描述

借助这些问答，我已经成功地从tif文件创建了缩略图.
现在，我需要创建一个CAD工程图(* .dwg)文件的缩略图.
这可能吗...?

I have been successful creating a thumbnail from a tif file with help of these Q&A''s.
Now I need to create a thumbnail image of a CAD drawing (*.dwg) file.
Is this possible...?

推荐答案

某处必须有一个公共方法，因为Windows资源管理器会显示这些位图，并且我知道在内部某处有一个内部位图.工程图文件.
但我找不到它.
我知道那里有矢量查看器，它们依赖于OpenDwgAlliance API，购买起来非常昂贵.
但是它们不是免费的.

There must be a public method somewhere, because Windows Explorer displays these bitmaps, and I know there is an internal bitmap somewhere in the drawing file.
But I can''t find it.
I know there are vector viewers out there which rely on the OpenDwgAlliance API which is very expensive to buy.
But they are not free.

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