using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Linq;

using System.Reflection;

using System.Runtime.InteropServices;

using System.Threading;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace ForceSensorPanelToMonitor

{

internal static class Program

{

public static readonly int WM_SHOWFIRSTINSTANCE = WinApi.RegisterWindowMessage($"WM_SHOWFIRSTINSTANCE|{WinApi.AssemblyGuid}");

/// <summary>

/// Tell our hiding sibling to wake up.

/// </summary>

static public void TickleSiblingProcess()

{

// We don't bother trying to find our hiding sibling, we just

// send our custom message to all windows and let our sibling

// catch it.

WinApi.SendNotifyMessage((IntPtr)WinApi.HWND_BROADCAST,

WM_SHOWFIRSTINSTANCE,

IntPtr.Zero,

IntPtr.Zero);

}

/// <summary>

/// The main entry point for the application.

/// </summary>

[STAThread]

static void Main()

{

var args = Environment.GetCommandLineArgs();

var startMinimized = false;

if (null != args && args.Length > 0)

{

startMinimized = args.Any(a => a.ToLower() == "/starttotray");

var wantHelp = args.Any(a => a == "/?" || a.ToLower() == "--help");

if (wantHelp)

{

// To display the usage, we need to attach to the existing console, if any

var ptr = WinApi.GetForegroundWindow();

WinApi.GetWindowThreadProcessId(ptr, out int u);

var process = Process.GetProcessById(u);

WinApi.AttachConsole(process.Id);

Console.WriteLine(@"

Usage: ForceSensorPanelToMonitor [/StartToTray]

/StartToTray - Starts the application minimized to the tray. Clicking on the icon in the tray brings up the settings dialog.

/? - This text.

");

return;

}

}

// We allow one copy per logged-in session, hence the Local\ prefix and the userId as part of the Mutex.

string userId = System.Security.Principal.WindowsIdentity.GetCurrent().User.Value;

// Make sure there is no other copy running yet.

// Keep the mutex from being garbage collected until main exits

using var mutex = new Mutex(true, $"Local\\ForceSensorPanelToMonitor-{userId}-{WinApi.AssemblyGuid}", out bool createdNew);

if (!createdNew)

{

// If they've asked us to start minimized, then clearly they don't

// want the window popping up. In that case just silently exit.

if (!startMinimized)

TickleSiblingProcess();

return;

}

Application.EnableVisualStyles();

Application.SetCompatibleTextRenderingDefault(false);

var mainForm = new SettingsDialog(startMinimized);

Application.Run(mainForm);

}

}

}