What's the purpose of GtkArg?

["pz8w yahoo com" <pz8w yahoo com>]

Hi,

I'm a beginner in GTK+ and Linux programming.
I'm reading the GGAD (GTK+/Gnome Application
Development) book now, but I can not understand the
section about GtkArg. What's GtkArg for?
I mean what's the purpose of GtkArg struct? When we
should/can use it?
I'm sorry if this is a silly question.

Thanks.
-----------------------------------------------------
(Accept my apology for my bad English written.)
Ramin


		
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