PintaProject/Pinta — pull request #44 by bodicsek (2012-11-25 20:23:11+00:00)
Title: Fix Bug #769736 - Saving a file with non-English letters...

The problem is windows gtk specific. The gdk_pixbuf_save and
gdk_pixbuf_savev are renamed to gdk_pixbuf_save_utf8 and
gdk_pixbuf_savev_utf8 in the windows implementation.
Similar to
http://stackoverflow.com/questions/12946991/how-to-create-a-gdk-pixbuf-from-a-unicode-filename-in-windows.

I wrapped the *_utf8 functions and calling those in case of windows.

Seems to work on win8 and ubuntu.