pub unsafe extern "C" fn gtk_font_chooser_set_filter_func(
fontchooser: *mut GtkFontChooser,
filter: GtkFontFilterFunc,
user_data: gpointer,
destroy: GDestroyNotify,
)
pub unsafe extern "C" fn gtk_font_chooser_set_filter_func(
fontchooser: *mut GtkFontChooser,
filter: GtkFontFilterFunc,
user_data: gpointer,
destroy: GDestroyNotify,
)