Several key issues stop Gtk+ from looking native on Win32. The current issues open are:
Theme Issues
- #351679 (http://bugzilla.gnome.org/show_bug.cgi?id=351679) - Notebooks drawn with extra line below tab in MS-Windows theme
- #351678 (http://bugzilla.gnome.org/show_bug.cgi?id=351678) - Notebooks not with PositionType.Top drawn incorrectly
- #302636 (http://bugzilla.gnome.org/show_bug.cgi?id=302636) - GtkVPaned/GtkHPaned have redraw problems with a TextView
- #352430 (http://bugzilla.gnome.org/show_bug.cgi?id=352430) - Default buttons not rendered correctly under MS-Windows theme on XP
- #352434 (http://bugzilla.gnome.org/show_bug.cgi?id=352434) - Spin buttons aren't rendered inside of entry like XP theme on MS-Windows
- #352436 (http://bugzilla.gnome.org/show_bug.cgi?id=352436) - Blue outline not drawn on focused button on MS-Windows Theme
