HidOutputReport Class

  • Reference

Definition

Namespace:
Windows.Devices.HumanInterfaceDevice
Edit

Represents a HID Output Report.

Hosts issue output reports to request changes on the device. For example, a host could issue a request to a keyboard to turn an LED on or off.

public ref class HidOutputReport sealed
/// [Windows.Foundation.Metadata.ContractVersion(Windows.Foundation.UniversalApiContract, 65536)]
/// [Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
class HidOutputReport final
[Windows.Foundation.Metadata.ContractVersion(typeof(Windows.Foundation.UniversalApiContract), 65536)]
[Windows.Foundation.Metadata.MarshalingBehavior(Windows.Foundation.Metadata.MarshalingType.Agile)]
public sealed class HidOutputReport
Public NotInheritable Class HidOutputReport
Inheritance
Object Platform::Object IInspectable HidOutputReport
Attributes
ContractVersionAttribute MarshalingBehaviorAttribute

Windows requirements

Device family
Windows 10 (introduced in 10.0.10240.0 - for Xbox, see UWP features that aren't yet supported on Xbox)
API contract
Windows.Foundation.UniversalApiContract (introduced in v1.0)

Remarks

The following example demonstrates how a UWP app built with XAML and C# uses the CreateOutputReport method to create an output report. This example then uses the SendOutputReportAsync method to send the report to the device.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

using Windows.Devices.Enumeration;
using Windows.Devices.HumanInterfaceDevice;
using Windows.Storage;
using Windows.Storage.Streams;

namespace HidSampleCS
{
    class Vendor
    {
        private async void ReadWriteToHidDevice(HidDevice device)
        {
            if (device != null)
            {
                // construct a HID output report to send to the device
                HidOutputReport outReport = device.CreateOutputReport();

                /// Initialize the data buffer and fill it in
                byte[] buffer = new byte[] { 10, 20, 30, 40 };

                DataWriter dataWriter = new DataWriter();
                dataWriter.WriteBytes(buffer);

                outReport.Data = dataWriter.DetachBuffer();

                // Send the output report asynchronously
                await device.SendOutputReportAsync(outReport);

                //
                // Sent output report successfully 
                // Now lets try read an input report 
                //
                HidInputReport inReport = await device.GetInputReportAsync();

                if (inReport != null)
                {
                    UInt16 id = inReport.Id;
                    var bytes = new byte[4];
                    DataReader dataReader = DataReader.FromBuffer(inReport.Data);
                    dataReader.ReadBytes(bytes);
                }
                else
                {
                    this.NotifyUser("Invalid input report received");
                }
            }
            else
            {
                this.NotifyUser("device is NULL");
            }
        }
    }
}

Properties

Data

Gets or sets the data associated with a given output report.
Id

Gets the identifier associated with a given output report.

Methods

GetBooleanControl(UInt16, UInt16)

Retrieves the boolean control associated with the given usagePage and usageId.
GetBooleanControlByDescription(HidBooleanControlDescription)

Retrieves the boolean control associated with the given controlDescription.
GetNumericControl(UInt16, UInt16)

Retrieves the numeric control associated with the given usagePage and usageId.
GetNumericControlByDescription(HidNumericControlDescription)

Retrieves the numeric control associated with the given controlDescription.

Applies to

See also