Revert "use mutexes"

This reverts commit 635d4492aa.

Bloxstrap/App.xaml.cs

@@ -163,22 +163,19 @@ namespace Bloxstrap
                 InstallChecker.CheckUpgrade();
 #endif
 
-            using InterProcessLock processLock = new InterProcessLock("Process", TimeSpan.FromMilliseconds(100));
-
             if (LaunchSettings.IsMenuLaunch)
             {
-                using InterProcessLock menuLock = new InterProcessLock("Menu", TimeSpan.FromMilliseconds(100));
+                Process? menuProcess = Process.GetProcesses().Where(x => x.MainWindowTitle == $"{ProjectName} Menu").FirstOrDefault();
 
-                if (!menuLock.IsAcquired)
+                if (menuProcess is not null)
                 {
-                    Frontend.ShowMessageBox(
+                    var handle = menuProcess.MainWindowHandle;
-                        "The Bloxstrap menu is already open.",
+                    Logger.WriteLine(LOG_IDENT, $"Found an already existing menu window with handle {handle}");
-                        MessageBoxImage.Error
+                    PInvoke.SetForegroundWindow((HWND)handle);
-                    );
                 }
                 else
                 {
-                    if (!processLock.IsAcquired && !LaunchSettings.IsQuiet)
+                    if (Process.GetProcessesByName(ProjectName).Length > 1 && !LaunchSettings.IsQuiet)
                         Frontend.ShowMessageBox(
                             Bloxstrap.Resources.Strings.Menu_AlreadyRunning, 
                             MessageBoxImage.Information

Bloxstrap/InterProcessLock.cs

@@ -1,30 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text;
-using System.Threading.Tasks;
-
-namespace Bloxstrap
-{
-    public class InterProcessLock : IDisposable
-    {
-        public Mutex Mutex { get; private set; }
-
-        public bool IsAcquired { get; private set; }
-
-        public InterProcessLock(string name, TimeSpan timeout)
-        {
-            Mutex = new Mutex(false, "Bloxstrap-" + name);
-            IsAcquired = Mutex.WaitOne(timeout);
-        }
-
-        public void Dispose()
-        {
-            if (IsAcquired)
-            {
-                Mutex.ReleaseMutex();
-                IsAcquired = false;
-            }
-        }
-    }
-}

Bloxstrap/NativeMethods.txt

@@ -1,4 +1,5 @@
-FlashWindow
+SetForegroundWindow
+FlashWindow
 GetWindowLong
 SetWindowLong
 EnumDisplaySettings