This is a bundle containing the GTK+ stack and its dependencies for Windows. As such it is nothing more than a combination of the individual packages it consists of. Here is a shortened list : - GTK+ 3.6.4 (patched) ; - GLib 2.34.3 ; - GDK-Pixbuf 2.26.5 ; - Pixman 0.26.0 ; - Cairo 1.10.2 (patched) ; - Pango 1.30.1 ; - ATK 2.6.0. Both run-time and developer packages are included. This bundle is intended for software developers and packagers. You are expected to know what to do with it, more or less. To use it, create some empty folder like "c:\gtk", Using either Windows Explorer's built-in zip file management, or the command-line unzip.exe, available for instance at ftp://tug.ctan.org/tex-archive/tools/zip/info-zip/WIN32/unz552xN.exe unzip this bundle. Avoid Winzip! It is known to behave oddly. (But you presumably already did extract the files, as you are reading this file.) Then add the bin folder to your PATH. Make sure you have no other versions of GTK+ in PATH. Run: pkg-config --cflags gtk+-3.0 and verify that it prints out something reasonable. Prepare Pango : pango-querymodules > c:\gtk\etc\pango\pango.modules Prepare GDK-Pixbuf : gdk-pixbuf-query-loaders > c:\gtk\lib\gdk-pixbuf-2.0\2.10.0\loaders.cache Prepare GTK+-IMModules : gtk-query-immodules-3.0 > c:\gtk\lib\gtk-3.0\3.0.0\immodules.cache Run: gtk3-demo and verify that it works.