private async void OnKeyUp(object sender, KeyRoutedEventArgs e)
{
if (e.Key == Windows.System.VirtualKey.F11)
{
if (SupportFullScreen)
{
await ShellControl.TryEnterFullScreenAsync();
}
}
else if (e.Key == Windows.System.VirtualKey.Escape)
{
if (SupportFullScreen && ShellControl.IsFullScreen)
{
ShellControl.ExitFullScreen();
}
else
{
NavigationService.GoBack();
}
}
}
public ShellPage()
{
InitializeComponent();
this.DataContext = this;
ShellPage.Current = this;
this.SizeChanged += OnSizeChanged;
if (SystemNavigationManager.GetForCurrentView() != null)
{
SystemNavigationManager.GetForCurrentView().BackRequested += ((sender, e) =>
{
if (SupportFullScreen && ShellControl.IsFullScreen)
{
e.Handled = true;
ShellControl.ExitFullScreen();
}
else if (NavigationService.CanGoBack())
{
NavigationService.GoBack();
e.Handled = true;
}
});
NavigationService.Navigated += ((sender, e) =>
{
if (NavigationService.CanGoBack())
{
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Visible;
}
else
{
SystemNavigationManager.GetForCurrentView().AppViewBackButtonVisibility = AppViewBackButtonVisibility.Collapsed;
}
});
}
}