gtk/gtk.go
func (v *Assistant) SetPageType(page IWidget, ptype AssistantPageType) {
	C.gtk_assistant_set_page_type(v.native(), page.toWidget(),
		C.GtkAssistantPageType(ptype))
}
func (v *Assistant) SetPageType(page IWidget, ptype AssistantPageType) {
	C.gtk_assistant_set_page_type(v.native(), page.toWidget(),
		C.GtkAssistantPageType(ptype))
}
// TODO: gtk_assistant_set_forward_page_func
// SetPageType is a wrapper around gtk_assistant_set_page_type().