How do I tell wix to install a file in a directory set in a property? - wix

Question

I want to do the following where XLSTART is defined as:
<CustomAction Id="AssignXLSTART" Return="check" Execute="firstSequence" Directory ='XLSTART' Value='[AppDataFolder]\Microsoft\Excel\XLSTART'>
</CustomAction>
And then I have a subsequent CustomAction that calls some C# code that may change this value.
And then in the list of files to install I have:
<Directory Id="XlStartFolderId" Name="[XLSTART]">
<Component Id="ExcelMacro_xla" Guid="26D21093-B617-4fb8-A5E7-016493D46055" DiskId="1">
<File Id="ExcelXLA" Name="AutoTagExcelMacro.xlam" ShortName="XLMacro.xla" Source="$(var.srcFolder)\AutoTagExcelMacro.xlam"/>
</Component>
</Directory>
But the above puts it in the INSTALLDIR[XLSTART]. How do I get it to read this as a property?

Answer 1

You should be able to install to the userprofile directory you refer to like this:
<Directory Id="TARGETDIR" Name="SourceDir">
<Directory Id="LocalAppDataFolder">
<Directory Id="Microsoft" Name="Microsoft">
<Directory Id="Excel" Name="Excel">
<Directory Id="XLSTART" Name="XLSTART">
<Component Id="ExcelAddIn" Feature="MyFeature" Guid="{11111-1111-GUID-HERE-YOURGUIDHERE}">
<File Source="C:\SourceFiles\MyAddin.xla" />
<RemoveFolder Id="Microsoft" On="uninstall" Directory="Microsoft" />
<RemoveFolder Id="Excel" On="uninstall" Directory="Excel" />
<RemoveFolder Id="XLSTART" On="uninstall" Directory="XLSTART" />
<RegistryValue Root="HKCU" Key="Software\MySoftware" Name="installed" Type="integer" Value="1" KeyPath="yes" />
</Component>
</Directory>
</Directory>
</Directory>
</Directory>
I would suggest you use the per-machine xlstart folder instead - if it still exists. I am not sure it does. The the addin is loaded for every user on the box on every launch. Generally I prefer this. It has been ages since I looked at this, so this could have changed in newer Office versions - in fact I am sure it has, but the details are unclear to me.
System Folder Properties: There are a number of System Folder Properties that can be used in MSI files to specify installation location - LocalAppDataFolder is just one of them: https://learn.microsoft.com/en-us/windows/win32/msi/property-reference#system-folder-properties

Answer 2

Figured it out. You need to install to the INSTALLDIR and then use CopyFile
<!-- place it in C:\Program Files (x86)\Microsoft Office\Root\Office16\XLSTART\ -->
<Component Id="ExcelMacro_xla" Guid="26D21093-B617-4fb8-A5E7-016493D46055" DiskId="1">
<File Id="ExcelXLA" Name="AutoTagExcelMacro.xlam" ShortName="XLMacro.xla" Source="$(var.srcFolder)\AutoTagExcelMacro.xlam">
<CopyFile Id='CopyXlMacro' DestinationProperty='XLPATH' DestinationName='AutoTagExcelMacro.xlam'/>
</File>
</Component>