how to decompile an .exe file which is not a .net module

Question

I am trying to decompile a file called App.exe. When I am trying to decompile this file using reflector it's getting an error that App.exe is not a .Net module.

Seeing this image you can get a idea that what I am trying to say:

Then I tried to check what language this file's written in using CFF Explorer. For App.exe it's showing this:

And for VSM.exe it's showing:

The two files are created by one company only but I cant understand why it is not decompiling.

Can't a .exe file which is not created in .NET be decompiled?

Answer 1

Here's article about decompiling Delphi applications: http://delphi.about.com/od/devutilities/a/decompiling.htm

It's a lot harder process than with .NET programs. What you're trying to achieve?