How to know my GTK+ version?

[Manuel Ferrero <mferrero reer it>]

I downloaded the all-in-one bundle for Win32, version 2.24.8, unzipped 
it and copied it in my disk, then I added the bin path to PATH variable.
Now I can compile and run a simple program.

I read on some webpage how to know my GTK version with the following 
command line:
pkg-config --variable=gtk_binary_version gtk+-2.0

but the output I get is:
2.10.0

So now I'm confused, do I have the 2.24.8 or the 2.10.0?
--
Regards,
Manuel Ferrero
R&D department

Reer SpA	
Tel.  +39 011 2482215
Fax. +39 011 859867

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