Duality.Launcher.DualityLauncher.OnUserDataChanged C# (CSharp) Method

        private void OnUserDataChanged(object sender, EventArgs eventArgs)
        {
            switch (DualityApp.UserData.GfxMode)
            {
                case ScreenMode.Window:
                case ScreenMode.FixedWindow:
                    this.WindowState = WindowState.Normal;
                    this.WindowBorder = WindowBorder.Fixed;
                    this.ClientSize = new Size(DualityApp.UserData.GfxWidth, DualityApp.UserData.GfxHeight);
                    DisplayDevice.Default.RestoreResolution();

                    break;

                case ScreenMode.Native:
                case ScreenMode.Fullscreen:
                    this.WindowState = WindowState.Fullscreen;
                    this.WindowBorder = WindowBorder.Hidden;
                    this.ClientSize = new Size(DualityApp.UserData.GfxWidth, DualityApp.UserData.GfxHeight);
                    DisplayDevice.Default.ChangeResolution(DualityApp.UserData.GfxWidth, DualityApp.UserData.GfxHeight, DisplayDevice.Default.BitsPerPixel, DisplayDevice.Default.RefreshRate);
                    break;
                default:
                    throw new ArgumentOutOfRangeException();
            }

            SetVSyncMode(this);
            DualityApp.TargetResolution = new Vector2(ClientSize.Width, ClientSize.Height);
            DualityApp.TargetMode = Context.GraphicsMode;
        }