I have an application that walks through all the Excel files in a huge
directory tree and, for each Excel file it finds,
1.  It opens the Excel file,
2.  checks the Workbook Object properties of that file,
3.  If it finds the property setting I'm looking for, it processes that
file,
4.  Closes the file,
5.  Moves to the next file, goto step 1.

My problem is that the files are often very large and it takes a long time
to open each one, and there are several thousand files.  Is there anyway I
can get the Workbook Object properties from an Excel Workbook without
actually opening the file?

A related problem is that many of the Excel files in the directory tree have
VBA code in Workbook_Open event that gets executed each time I open a file.
I don't want to execute that code; I just want to get the properties.

The property I am examining is the Theme property; but I will need to check
others later; thus, a solution that works only for the Theme property won't
help me.

Thanks!!

P.S., I thought GetObject would do the trick, but it also causes the file to
be opened.