[求助]：DWG文件格式

lfc9861 · 发表于 2003-6-16 23:36:01

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有哪位朋友有有关于DWG文件格式的资料？

lsjjm · 发表于 2003-6-17 07:48:34

The DWG file format is a de facto standard for CAD interoperability,
in use throughout the world. Defined by Autodesk, it is supported,
through OpenDWG, by over 300 commercial software developers, and well
over 1,000 non-commercial, educational, and internal corporate developers.
There are estimated to be more than three billion DWG files in existence.
The AutoCAD 2004 DWG file format incorporates changes which make it
particularly difficult for third-party programs to read. Both the file
and section headers are encrypted, but in different manners from each other.
While OpenDWG has been able to determine the algorithm used for both,
it has not been able to determine if the encryption keys used to scramble
the data will remain static, will change in each point release of AutoCAD,
or will ultimately be changed dynamically under program control.

wharan · 发表于 2003-6-17 08:14:49

留个地址吧，我发给你。

lfc9861 · 发表于 2003-6-17 21:34:07

多谢wharan,邮箱地址:lfc9861@163.com lif891@sina.com
多谢

subtop · 发表于 2004-8-31 22:43:16

subtop@163.com
多谢wharan大侠

mecad · 发表于 2005-1-13 10:19:41

lufurui@163.net

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[求助] [求助]：DWG文件格式

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