Program.cs

using Avalonia;
using FluentUSB.Services;
using System;
using System.Threading;

namespace FluentUSB;

sealed class Program
{
    // 单实例互斥体：常驻程序被重复启动会产生多个托盘图标与重复弹窗
    private const string InstanceMutexName = @"Local\FluentUSB.SingleInstance";

    // Initialization code. Don't use any Avalonia, third-party APIs or any
    // SynchronizationContext-reliant code before AppMain is called: things aren't initialized
    // yet and stuff might break.
    [STAThread]
    public static void Main(string[] args)
    {
        using var instanceMutex = new Mutex(true, InstanceMutexName, out var isFirstInstance);
        if (!isFirstInstance)
        {
            Log.Info("检测到已有实例在运行，本次启动直接退出");
            return;
        }

        try
        {
            BuildAvaloniaApp().StartWithClassicDesktopLifetime(args);
        }
        catch (Exception ex)
        {
            Log.Error("应用异常退出", ex);
        }
    }

    // Avalonia configuration, don't remove; also used by visual designer.
    public static AppBuilder BuildAvaloniaApp()
        => AppBuilder.Configure<App>()
            .UsePlatformDetect()
#if DEBUG
            .WithDeveloperTools()
#endif
            .WithInterFont()
            .LogToTrace();
}