C#•4mo ago

Dynamic Lighting API in non UWP applications

I'm trying to control the leds on devices through the Dynamic Lighting API using the WinRT-Wrappers. The code below compiles, runs and detects all relevant devices using net8.0-windows10.0.17763.0 as the TargetFramework, but the SetColor-method does not work. (No exception, it's just doing nothing at all.) Inside a UWP-app this works and sets the color. I didn't find anything in the docs explaining this behavior and I'm also not really familiar with the usage of WinRT. Is there anything obvious I'm missing or does someone know a way to get this to work?

1 Reply

Darth AffeOP•4mo ago

Test-Code:

using Windows.Devices.Enumeration;
using Windows.Devices.Lights;
using Windows.System;
using Windows.UI;

namespace DynamicLightingTestNonUWP;

internal record LampArrayInfo(string Id, string DisplayName, LampArray LampArray);

public class Program
{
    public static void Main()
    {
        List<LampArrayInfo> lampArrays = [];
        ManualResetEventSlim waitEvent = new(false);

        DeviceWatcher? watcher = DeviceInformation.CreateWatcher(LampArray.GetDeviceSelector());
        watcher.EnumerationCompleted += OnEnumerationCompleted;
        watcher.Added += OnDeviceAdded;
        watcher.Start();

        waitEvent.Wait();

        watcher.Stop();
        watcher.EnumerationCompleted -= OnEnumerationCompleted;
        watcher.Added -= OnDeviceAdded;

        foreach (LampArrayInfo lampArrayInfo in lampArrays)
        {
            Console.WriteLine("################################");
            Console.WriteLine($"Id: {lampArrayInfo.Id}, Name: {lampArrayInfo.DisplayName}, LampCount: {lampArrayInfo.LampArray.LampCount}");
            Console.WriteLine(lampArrayInfo.LampArray.IsConnected);
            Console.WriteLine(lampArrayInfo.LampArray.IsEnabled);
            Console.WriteLine($"[{string.Join(",", lampArrayInfo.LampArray.GetIndicesForKey(VirtualKey.Number1))}]");

            lampArrayInfo.LampArray.SetColor(Color.FromArgb(255, 255, 0, 0));
        }

        Console.WriteLine("Press any key to exit ...");
        Console.ReadKey();

        void OnEnumerationCompleted(DeviceWatcher sender, object o) => waitEvent.Set();
        void OnDeviceAdded(DeviceWatcher sender, DeviceInformation args) => lampArrays.Add(new LampArrayInfo(args.Id, args.Name, LampArray.FromIdAsync(args.Id).GetAwaiter().GetResult()));
    }
}

using Windows.Devices.Enumeration;
using Windows.Devices.Lights;
using Windows.System;
using Windows.UI;

namespace DynamicLightingTestNonUWP;

internal record LampArrayInfo(string Id, string DisplayName, LampArray LampArray);

public class Program
{
    public static void Main()
    {
        List<LampArrayInfo> lampArrays = [];
        ManualResetEventSlim waitEvent = new(false);

        DeviceWatcher? watcher = DeviceInformation.CreateWatcher(LampArray.GetDeviceSelector());
        watcher.EnumerationCompleted += OnEnumerationCompleted;
        watcher.Added += OnDeviceAdded;
        watcher.Start();

        waitEvent.Wait();

        watcher.Stop();
        watcher.EnumerationCompleted -= OnEnumerationCompleted;
        watcher.Added -= OnDeviceAdded;

        foreach (LampArrayInfo lampArrayInfo in lampArrays)
        {
            Console.WriteLine("################################");
            Console.WriteLine($"Id: {lampArrayInfo.Id}, Name: {lampArrayInfo.DisplayName}, LampCount: {lampArrayInfo.LampArray.LampCount}");
            Console.WriteLine(lampArrayInfo.LampArray.IsConnected);
            Console.WriteLine(lampArrayInfo.LampArray.IsEnabled);
            Console.WriteLine($"[{string.Join(",", lampArrayInfo.LampArray.GetIndicesForKey(VirtualKey.Number1))}]");

            lampArrayInfo.LampArray.SetColor(Color.FromArgb(255, 255, 0, 0));
        }

        Console.WriteLine("Press any key to exit ...");
        Console.ReadKey();

        void OnEnumerationCompleted(DeviceWatcher sender, object o) => waitEvent.Set();
        void OnDeviceAdded(DeviceWatcher sender, DeviceInformation args) => lampArrays.Add(new LampArrayInfo(args.Id, args.Name, LampArray.FromIdAsync(args.Id).GetAwaiter().GetResult()));
    }
}

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Dynamic Lighting API in non UWP applications