Code:
Public Sub PublishDXF()
' Get the DXF translator Add-In.
Dim DXFAddIn As TranslatorAddIn
Set DXFAddIn = ThisApplication.ApplicationAddIns.ItemById("{C24E3AC4-122E-11D5-8E91-0010B541CD80}") 'Set a reference to the active document (the document to be published).
Dim oDocument As Document
Set oDocument = ThisApplication.ActiveDocument
Dim oContext As TranslationContext
Set oContext = ThisApplication.TransientObjects.CreateTranslationContext
oContext.Type = kFileBrowseIOMechanism
' Create a NameValueMap object
Dim oOptions As NameValueMap
Set oOptions = ThisApplication.TransientObjects.CreateNameValueMap
' Create a DataMedium object
Dim oDataMedium As DataMedium
Set oDataMedium = ThisApplication.TransientObjects.CreateDataMedium
' Check whether the translator has 'SaveCopyAs' options
If DXFAddIn.HasSaveCopyAsOptions(oDocument, oContext, oOptions) Then
Dim strIniFile As String
strIniFile = "C:\tempDXFOut.ini"
' Create the name-value that specifies the ini file to use.
oOptions.Value("Export_Acad_IniFile") = strIniFile
End If
'Set the destination file name
oDataMedium.FileName = "c:\tempdxfout.dxf"
'Publish document.
Call DXFAddIn.SaveCopyAs(oDocument, oContext, oOptions, oDataMedium)
End Sub