RadialController Class

Definition

public ref class RadialController sealed

/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 196608)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
class RadialController final

[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 196608)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
public sealed class RadialController

Public NotInheritable Class RadialController

Inheritance

Object Platform::Object IInspectable RadialController

Attributes

ContractVersionAttribute MarshalingBehaviorAttribute

Windows requirements

Examples

In this example, we add a custom tool to the Surface Dial menu and declare the RadialController input handlers.

1. First, we create a reference to the RadialController object for the Surface Dial (myController) by calling CreateForCurrentView.
2. We then create an instance of a RadialControllerMenuItem (myItem) by calling RadialControllerMenuItem.CreateFromIcon.
3. Next, we append that item to the collection of menu items.
4. We declare the input event handlers (ButtonClicked and RotationChanged) for the RadialController object.
5. Finally, we define the event handlers.

public sealed partial class MainPage : Page
 {
     RadialController myController;

     public MainPage()
     {
         this.InitializeComponent();
         // Create a reference to the RadialController.
         myController = RadialController.CreateForCurrentView();

         // Create an icon for the custom tool.
         RandomAccessStreamReference icon =
           RandomAccessStreamReference.CreateFromUri(
             new Uri("ms-appx:///Assets/StoreLogo.png"));

         // Create a menu item for the custom tool.
         RadialControllerMenuItem myItem =
           RadialControllerMenuItem.CreateFromIcon("Sample", icon);

         // Add the custom tool to the RadialController menu.
         myController.Menu.Items.Add(myItem);

         // Declare input handlers for the RadialController.
         myController.ButtonClicked += MyController_ButtonClicked;
         myController.RotationChanged += MyController_RotationChanged;
     }

     // Handler for rotation input from the RadialController.
     private void MyController_RotationChanged(RadialController sender,
       RadialControllerRotationChangedEventArgs args)
     {
         if (RotationSlider.Value + args.RotationDeltaInDegrees > 100)
         {
             RotationSlider.Value = 100;
             return;
         }
         else if (RotationSlider.Value + args.RotationDeltaInDegrees < 0)
         {
             RotationSlider.Value = 0;
             return;
         }
         RotationSlider.Value += args.RotationDeltaInDegrees;
     }

     // Handler for click input from the RadialController.
     private void MyController_ButtonClicked(RadialController sender,
       RadialControllerButtonClickedEventArgs args)
     {
         ButtonToggle.IsOn = !ButtonToggle.IsOn;
     }
 }

In the initialization function shown here, we declare the various input event handlers for the RadialController object.

// Create and configure our radial controller.
private void InitializeController() 
{
    // Create a reference to the RadialController.
    radialController = RadialController.CreateForCurrentView();
    // Set rotation resolution to 1 degree of sensitivity.
    radialController.RotationResolutionInDegrees = 1;

    // Declare input handlers for the RadialController.
    radialController.ButtonClicked += (sender, args) =>
    { RadialController_ButtonClicked(sender, args); };
    radialController.RotationChanged += (sender, args) =>
    { RadialController_RotationChanged(sender, args); };

    radialController.ControlAcquired += (sender, args) =>
    { RadialController_ControlAcquired(sender, args); };
    radialController.ControlLost += (sender, args) =>
    { RadialController_ControlLost(sender, args); };
    radialController.ScreenContactStarted += (sender, args) =>
    { RadialController_ScreenContactStarted(sender, args); };
    radialController.ScreenContactContinued += (sender, args) =>
    { RadialController_ScreenContactContinued(sender, args); };
    radialController.ScreenContactEnded += (sender, args) =>
    { RadialController_ScreenContactEnded(sender, args); };
    AddToLog("Input handlers created");

    // Create the custom menu items.
    CreateMenuItems();
    // Specify the menu items.
    ConfigureMenu();
}

In the ButtonClicked handler, the interaction sets the state of a toggle button to checked or unchecked.

// Occurs when the wheel device is pressed and then released 
// while a customRadialController tool is active.
// NOTE: Your app does not receive this event when the RadialController 
// menu is active or a built-in tool is active
// Send click input to toggle button of active region.
private void RadialController_ButtonClicked(RadialController sender,
  RadialControllerButtonClickedEventArgs args)
{
    toggles[activeMenuItemIndex].IsOn = !toggles[activeMenuItemIndex].IsOn;
}

In the RotationChanged handler, the interaction modifies the value of a slider.

// Occurs when the wheel device is rotated while a custom 
// RadialController tool is active.
// NOTE: Your app does not receive this event when the RadialController 
// menu is active or a built-in tool is active
// Send rotation input to slider of active region.
private void RadialController_RotationChanged(RadialController sender,
  RadialControllerRotationChangedEventArgs args)
{
    Slider slider = sliders[activeMenuItemIndex];
    if (slider.Value + args.RotationDeltaInDegrees > 100)
    {
        slider.Value = 100;
        return;
    }
    else if (slider.Value + args.RotationDeltaInDegrees < 0)
    {
        slider.Value = 0;
        return;
    }
    slider.Value += args.RotationDeltaInDegrees;
    AddToLog("\nRotation: " + sliders[activeMenuItemIndex].Name + " value changed to " + slider.Value);
}

Remarks

Version history

Properties

Methods

Events

Applies to

See also

• Windows.UI.Input
• RadialControllerButtonClickedEventArgs
• RadialControllerConfiguration
• RadialControllerControlAcquiredEventArgs
• RadialControllerMenu
• RadialControllerMenuItem
• RadialControllerRotationChangedEventArgs
• RadialControllerScreenContact
• RadialControllerScreenContactContinuedEventArgs
• RadialControllerScreenContactStartedEventArgs
• RadialControllerMenuKnownIcon
• RadialControllerSystemMenuItemKind
• Surface Dial interactions
• Universal Windows Platform samples (C# and C++)
• Windows desktop sample
• Radial controller sample