[DllImport(Libraries.allegro_dll, CallingConvention = CallingConvention.Cdecl)] public static extern void al_set_new_display_flags(ALLEGRO_DISPLAY_FLAGS flags);
[DllImport(Libraries.allegro_dll, CallingConvention = CallingConvention.Cdecl)] public static extern bool al_set_display_flag(IntPtr display, ALLEGRO_DISPLAY_FLAGS flag, bool onoff);