Gtk programming

[jamil@elsalvador.com]

Using the Cygwin setup program, I have installed GTK+; looking for the 
'gtk.h' file I found one in '/usr/include/gtk-2.0/gtk/gtk.h' and another 
at '/usr/X11R6/include/gtk-2.0/gtk/gtk.h', why is this? 
Most importantly, when I try to compile a program using: 
gcc example.c -Wall -o example `gtk-config --libs --cflags` 
I get a message saying that gtk-config was not found and that there is 
no such a file as 'gtk/gtk.h'! 

Can someone tell me how to solve this problem? 

TIA  



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