public static void gtk_header_bar_pack_end(IntPtr bar, IntPtr child) { if (EtoEnvironment.Platform.IsLinux) { NMLinux.gtk_header_bar_pack_end(bar, child); } else if (EtoEnvironment.Platform.IsMac) { NMMac.gtk_header_bar_pack_end(bar, child); } else { NMWindows.gtk_header_bar_pack_end(bar, child); } }