[VBA函数]：如何后台转换DWG文件的版本？！！！！！！

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请问：
　　如何将某个文件夹下的DWG文件逐一从高版本转为低版本？
　　例：将2004格式的DWG，转为2002格式，以便用CAD2002打开。

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SaveAs Method



Saves the document to a specified file; no longer supported for menu groups.

See Also | Example

Signatures

object.SaveAs FileName, FileType [, SecurityParams]

Object

Document, MenuGroup
The object or objects this method applies to.



Note This method has no effect for menu groups.

FileName

String; input-only
The full path and file name, or valid URL address, for the file. The active document takes on the new name.

FileType


AcSaveAsType enum; input-only; optional for Document objects

acR14_dwg
AutoCAD R14 DWG (*.dwg)

ac2000_dwg
AutoCAD 2000 DWG (*.dwg)

ac2000_dxf
AutoCAD 2000 DXF (*.dxf)

ac2000_Template
AutoCAD 2000 Drawing Template File (*.dwt)

ac2004_dwg
AutoCAD 2004 DWG (*.dwg)

ac2004_dxf
AutoCAD 2004 DXF (*.dxf)

ac2004_Template
AutoCAD 2004 Drawing Template File (*.dwt)

ac2007_dwg
AutoCAD 2007 DWG (*.dwg)

ac2007_dxf
AutoCAD 2007 DXF (*.dxf)

ac2007_Template
AutoCAD 2007 Drawing Template File (*.dwt)

acNative
A synonym for the latest drawing release. In this release, this value equals ac2007_dwg.


SecurityParams

SecurityParams object; variant; optional for Document objects
Security settings for an encrypted drawing.

Remarks

The default file type for documents is ac2007_dwg. The value acR14_dxf is obsolete.

Documents can be saved only as files with the extensions indicated above. To save a document in a different file type, use the Export method.

When saving to a secure URL, a dialog box prompts the user for the necessary password information. Message boxes appear if the user has not suppressed this activity in the browser.

Menu groups cannot be saved in AutoCAD 2006 and later releases. This method will be removed from the MenuGroup object in a future release.


用法：
ThisDrawing.SaveAs "123.dwg", ac2000_dwg

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