The Win32 port of GTk+ is a work in progress, and not as stable or correct as the Unix/X11 version. For more information about the Win32 port, see http://www.gimp.org/tml/gimp/win32/ or http://www.iki.fi/tml/gimp/win32/ . As for now, only Microsoft C (the command-line compiler) is supported. Before compiling, check the BIN definition in gdk\win32\makefile.msc and gtk\makefile.msc. Compile in gdk\win32 and gtk with `nmake -f makefile.msc`. Install with `nmake -f makefile.msc install`. Cygwin ("mingw32", i.e. gcc -mno-cygwin) support will be added later. The tablet support uses the Wintab API. The Wintab development kit can be downloaded from http://www.pointing.com.