Remove Office macro by VC++

Nobuo Miwa
Nobuo Miwa used Ask the Experts™
on
Hello Experts,

I want to remove macro in MS Office(Excel,Word,PowerPoint) file by VC++.
Do I need to work with C#  with .NET ?

I want to delete all visible and invisible macros from Office 2003, 2007 files.

Can someone suggest how to code removing macro ?

Regards,
Nobuo Miwa
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Top Expert 2011

Commented:
Microsoft has already done this and is described here for Word files (DOCM extension).
Take a look, it should work just fine and then you can tweak for other file extension.
https://msdn.microsoft.com/en-us/library/office/gg188063.aspx
Jamie GarrochSenior Technical Consultant at BrightCarbon

Commented:
You could save the macro-enabled file in the corresponding non-macro file format and the VBA project will be removed automatically.

For example:

Excel : .xlsm -> .xlsx
Word : .docm -> .docx
PowerPoint : .pptm -> .pptx
Top Expert 2011

Commented:
This macro will do this for Word
Sub SaveAsDocx()
Dim file
Dim path As String
path = "C:\Test\"           'your folder here

file = Dir(path & "*.docm")
Do While file <> ""
Documents.Open FileName:=path & file
ActiveDocument.SaveAs2 FileName:=path & file, FileFormat:=wdFormatXMLDocument, LockComments:=False, Password:="", _
        AddToRecentFiles:=True, WritePassword:="", ReadOnlyRecommended:=False, _
        EmbedTrueTypeFonts:=False, SaveNativePictureFormat:=False, SaveFormsData _
        :=False, SaveAsAOCELetter:=False, CompatibilityMode:=15
ActiveDocument.Close
file = Dir()
Loop
End Sub

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Nobuo MiwaSecurity Engineer

Author

Commented:
Thank you guys,

Are those approach able to remove macro from Office 2003 ?

Regards,
Nobuo Miwa
Jamie GarrochSenior Technical Consultant at BrightCarbon

Commented:
This will save a macro-enabled PowerPoint presentation in the .pptm file format without macros to the same folder without macros using the .pptx file format:

Sub SaveWithoutMacros()
  With ActivePresentation
    MsgBox "Saving " & Chr(34) & .Name & Chr(34) & " as : " & vbCrLf _
      & Replace(.Name, ".pptm", ".pptx") & " here : " & vbCrLf _
      & .Path
    .SaveAs FileName:="NoMacros.pptx", FileFormat:=ppSaveAsOpenXMLPresentation
  End With
End Sub

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Jamie GarrochSenior Technical Consultant at BrightCarbon

Commented:
Office 2003 is pre-OpenXML formats and used the Office proprietary format which did not have separate file formats for macro-enabled presentations. Do you need to keep the 2003 format or can you save it in the newer XML format? Here is an example of a programmatic approach to remove code modules one at a time for Excel:

Option Explicit 
 
Sub DeleteVBA() 
     
    ' Trust Access To Visual Basic Project must be enabled:
    ' Tools | Macro | Security | Trusted Sources
     
    Dim lComp As Long 
    Dim lLine As Long 
     
    On Error Resume Next 
    With ActiveWorkbook.VBProject 
        For lComp = .VBComponents.Count To 1 Step -1 
            .VBComponents.Remove .VBComponents(lComp) 
        Next
        For lLine = .VBComponents.Count To 1 Step -1 
            .VBComponents(lLine).CodeModule.DeleteLines _ 
            1, .VBComponents(lLine).CodeModule.CountOfLines 
        Next
    End With 
    On Error GoTo 0 
     
End Sub

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Retired
Top Expert 2012
Commented:
You could save pre-2007 files as macro-free .docx format and then open and save them in the older format.
Top Expert 2011

Commented:
Jamie's code should work for the other apps :)
Nobuo MiwaSecurity Engineer

Author

Commented:
Hello guys,

I want code that can run as standalone app , and does not run as macro(VBA).

> You could save pre-2007 files as macro-free .docx format and then open
> and save them in the older format.

I will try this from C# and post result on this thread.
Nobuo MiwaSecurity Engineer

Author

Commented:
Thanks GrahamSkan !

It works fine for me and easy to implement with C#.

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