"This guy has ported GTK (at least some of it, I don't know much about GTK) and THE GIMP to Win32.
This port does NOT require the install of Cygnus GNU32 or an X-Server. More information is kept here as well as an explanation of the whys and hows"
Coding is easy; All you do is sit staring at a terminal until the drops
of blood form on your forehead.