With the release of Gtk 3 for windows I thought of upgrading my Gtk 2 C application to take advantage of the new GtkGrid widget.
The program compiles fine under linu
There is now an answer on the GTK mailing list.
In gutils.h lines 82 and 122, and in gstring.h line 129, change "static inline" to "static __inline". Alternatively add a PreprocessorDefinition to the project file to define "inline" as "__inline".
https://mail.gnome.org/archives/gtk-list/2014-January/msg00011.html
That allowed my project to work just fine.