gtk/gtk.go
func (v *Notebook) GetNPages() int {
	c := C.gtk_notebook_get_n_pages(v.native())
	return int(c)
}
func (v *Notebook) GetNPages() int {
	c := C.gtk_notebook_get_n_pages(v.native())
	return int(c)
}
// GetNPages() is a wrapper around gtk_notebook_get_n_pages().