App.axaml.cs

using System.Runtime.InteropServices;
using System.Runtime.Versioning;
using Avalonia;
using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Markup.Xaml;
using NewRGB.ViewModels;
using NewRGB.Views;

namespace NewRGB;

[SupportedOSPlatform(nameof(OSPlatform.Linux))]
[SupportedOSPlatform(nameof(OSPlatform.OSX))]
[SupportedOSPlatform(nameof(OSPlatform.Windows))]
public partial class App : Application
{
    public override void Initialize()
    {
        AvaloniaXamlLoader.Load(this);
        ViewLocator.Register<LoginViewModel, LoginView>();
        ViewLocator.Register<MainViewModel, MainView>();
        ViewLocator.Register<SettingsViewModel, SettingsView>();
    }

    public override void OnFrameworkInitializationCompleted()
    {
        if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktop)
            desktop.MainWindow = new MainWindow
            {
                DataContext = new MainWindowViewModel()
            };

        base.OnFrameworkInitializationCompleted();
    }
}