[PT Run] Closing PT Run and new settings app when PowerToys is not running (#3853)

Closing PowerLauncher, FZ Editor and new settings app when PowerToys is not running

src/modules/launcher/Microsoft.Launcher/dllmain.cpp

@@ -132,12 +132,18 @@ public:
    // Enable the powertoy
   virtual void enable()
   {
+      unsigned long powertoys_pid = GetCurrentProcessId();
+
       if (!is_process_elevated(false))
       {
+          std::wstring executable_args = L"";
+          executable_args.append(std::to_wstring(powertoys_pid));
+
           SHELLEXECUTEINFOW sei{ sizeof(sei) };
           sei.fMask = { SEE_MASK_NOCLOSEPROCESS | SEE_MASK_FLAG_NO_UI };
           sei.lpFile = L"modules\\launcher\\PowerLauncher.exe";
           sei.nShow = SW_SHOWNORMAL;
+          sei.lpParameters = executable_args.data(); 
           ShellExecuteExW(&sei);
 
           m_hProcess = sei.hProcess;
@@ -151,6 +157,7 @@ public:
           params += L"-target modules\\launcher\\PowerLauncher.exe ";
           params += L"-pidFile ";
           params += POWER_LAUNCHER_PID_SHARED_FILE;
+          params += L" " + std::to_wstring(powertoys_pid) + L" ";
 
           action_runner_path += L"\\action_runner.exe";
           // Set up the shared file from which to retrieve the PID of PowerLauncher

src/modules/launcher/PowerLauncher/App.xaml.cs

@@ -2,6 +2,7 @@ using Microsoft.PowerLauncher.Telemetry;
 using Microsoft.PowerToys.Telemetry;
 using System;
 using System.Diagnostics;
+using System.Runtime.InteropServices;
 using System.Threading.Tasks;
 using System.Timers;
 using System.Windows;
@@ -20,13 +21,12 @@ using Stopwatch = Wox.Infrastructure.Stopwatch;
 
 namespace PowerLauncher
 {
-    
-
     public partial class App : IDisposable, ISingleInstanceApp
     {
         public static PublicAPIInstance API { get; private set; }
         private const string Unique = "PowerLauncher_Unique_Application_Mutex";
         private static bool _disposed;
+        private static int _powerToysPid;
         private Settings _settings;
         private MainViewModel _mainVM;
         private SettingWindowViewModel _settingsVM;
@@ -35,10 +35,12 @@ namespace PowerLauncher
         private SettingsWatcher _settingsWatcher;
 
         [STAThread]
-        public static void Main()
+        public static void Main(string[] args)
         {
             if (SingleInstance<App>.InitializeAsFirstInstance(Unique))
             {
+                int.TryParse(args[0], out _powerToysPid);
+
                 using (var application = new App())
                 {
                     application.InitializeComponent();
@@ -49,6 +51,8 @@ namespace PowerLauncher
 
         private void OnStartup(object sender, StartupEventArgs e)
         {
+            WaitForPowerToysRunner();
+
             var bootTime = new System.Diagnostics.Stopwatch();
             bootTime.Start();
             Stopwatch.Normal("|App.OnStartup|Startup cost", () =>
@@ -113,6 +117,28 @@ namespace PowerLauncher
             Current.SessionEnding += (s, e) => Dispose();
         }
 
+        [DllImport("kernel32.dll", SetLastError = true)]
+        public static extern IntPtr OpenProcess(uint processAccess, bool bInheritHandle, int processId);
+
+        [DllImport("kernel32.dll", SetLastError = true)]
+        private static extern uint WaitForSingleObject(IntPtr hHandle, uint dwMilliseconds);
+
+        private void WaitForPowerToysRunner()
+        {
+            Task.Run(() =>
+            {
+                const uint INFINITE = 0xFFFFFFFF;
+                const uint WAIT_OBJECT_0 = 0x00000000;
+                const uint SYNCHRONIZE = 0x00100000;
+
+                IntPtr powerToysProcHandle = OpenProcess(SYNCHRONIZE, false, _powerToysPid);
+                if (WaitForSingleObject(powerToysProcHandle, INFINITE) == WAIT_OBJECT_0)
+                {
+                    Environment.Exit(0);
+                }
+            });
+        }
+
         /// <summary>
         /// let exception throw as normal is better for Debug
         /// </summary>