Code Quality: Replaced DllImport calls with CsWin32 generations for event object operations

src/Files.App.CsWin32/NativeMethods.txt

@@ -45,7 +45,7 @@
 GetKeyState
 CreateDirectoryFromApp
 WNetCancelConnection2
 NET_USE_CONNECT_FLAGS
 NETRESOURCEW
 WNetAddConnection3
 CREDENTIALW
@@ -78,7 +78,7 @@
 SetEntriesInAcl
 ACL_SIZE_INFORMATION
 DeleteAce
 EXPLICIT_ACCESS
 ACCESS_ALLOWED_ACE
 LookupAccountSid
 GetComputerName
@@ -134,7 +134,7 @@
 CoTaskMemFree
 QueryDosDevice
 DeviceIoControl
 GetLastError
 CreateFile
 GetVolumeInformation
 COMPRESSION_FORMAT
@@ -226,3 +226,7 @@
 RoGetAgileReference
 IQueryInfo
 QITIPF_FLAGS
+CreateEvent
+SetEvent
+ResetEvent
+CoWaitForMultipleObjects

src/Files.App/App.xaml.cs

@@ -5,6 +5,8 @@
 using Microsoft.Extensions.Logging;
 using Microsoft.UI.Xaml;
 using Microsoft.UI.Xaml.Controls;
+using Windows.Win32.Foundation;
+using Windows.Win32;
 using Microsoft.Windows.AppLifecycle;
 using Windows.ApplicationModel;
 using Windows.ApplicationModel.DataTransfer;
@@ -223,9 +225,15 @@ private async void Window_Closed(object sender, WindowEventArgs args)
 				var results = items.Select(x => x.ItemPath).ToList();
 				System.IO.File.WriteAllLines(OutputPath, results);
 
-				IntPtr eventHandle = Win32PInvoke.CreateEvent(IntPtr.Zero, false, false, "FILEDIALOG");
-				Win32PInvoke.SetEvent(eventHandle);
-				Win32PInvoke.CloseHandle(eventHandle);
+				unsafe
+				{
+					fixed (char* pszEventObjectName = "FILEDIALOG")
+					{
+						HANDLE hEventHandle = PInvoke.CreateEvent((Windows.Win32.Security.SECURITY_ATTRIBUTES*)null, false, false, pszEventObjectName);
+						PInvoke.SetEvent(hEventHandle);
+						PInvoke.CloseHandle(hEventHandle);
+					}
+				}
 			}
 
 			// Continue running the app on the background

src/Files.App/Helpers/Win32/Win32PInvoke.Methods.cs

@@ -71,11 +71,6 @@ public static extern IntPtr CreateEvent(
 			string lpName
 		);
 
-		[DllImport("kernel32.dll")]
-		public static extern bool SetEvent(
-			IntPtr hEvent
-		);
-
 		[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Unicode)]
 		public static extern int GetDpiForWindow(
 			IntPtr hwnd
@@ -135,11 +130,6 @@ public static extern uint WaitForMultipleObjectsEx(
 			bool bAlertable
 		);
 
-		[DllImport("api-ms-win-core-synch-l1-2-0.dll", SetLastError = true)]
-		public static extern bool ResetEvent(
-			IntPtr hEvent
-		);
-
 		[DllImport("api-ms-win-core-synch-l1-2-0.dll", SetLastError = true)]
 		public static extern uint WaitForSingleObjectEx(
 			IntPtr hHandle,

src/Files.App/Program.cs

@@ -5,11 +5,14 @@
 using Microsoft.UI.Dispatching;
 using Microsoft.UI.Xaml;
 using Microsoft.Windows.AppLifecycle;
+using Windows.Win32;
+using Windows.Win32.Foundation;
 using System.IO;
 using System.Text;
 using Windows.ApplicationModel.Activation;
 using Windows.Storage;
 using static Files.App.Helpers.Win32PInvoke;
+using Windows.Win32.Security;
 
 namespace Files.App
 {
@@ -248,44 +251,48 @@ private static async void OnActivated(object? sender, AppActivationArguments arg
 		/// <remarks>
 		/// Redirects on another thread and uses a non-blocking wait method to wait for the redirection to complete.
 		/// </remarks>
-		public static void RedirectActivationTo(AppInstance keyInstance, AppActivationArguments args)
+		public static unsafe void RedirectActivationTo(AppInstance keyInstance, AppActivationArguments args)
 		{
-			IntPtr eventHandle = CreateEvent(IntPtr.Zero, true, false, null);
+			HANDLE hEventHandle = PInvoke.CreateEvent((SECURITY_ATTRIBUTES*)null, true, false, null);
+
+			HANDLE* pHandles = stackalloc HANDLE[1];
+			pHandles[0] = hEventHandle;
 
 			Task.Run(() =>
 			{
 				keyInstance.RedirectActivationToAsync(args).AsTask().Wait();
-				SetEvent(eventHandle);
+				PInvoke.SetEvent(hEventHandle);
 			});
 
-			_ = CoWaitForMultipleObjects(
+			uint dwIndex = 0u;
+			PInvoke.CoWaitForMultipleObjects(
 				CWMO_DEFAULT,
 				INFINITE,
-				1,
-				[eventHandle],
-				out uint handleIndex);
+				1u,
+				pHandles,
+				&dwIndex);
 		}
 
 		public static void OpenShellCommandInExplorer(string shellCommand, int pid)
 		{
 			Win32Helper.OpenFolderInExistingShellWindow(shellCommand);
 		}
 
-		public static void OpenFileFromTile(string filePath)
+		public static unsafe void OpenFileFromTile(string filePath)
 		{
-			IntPtr eventHandle = CreateEvent(IntPtr.Zero, true, false, null);
+			HANDLE hEventHandle = PInvoke.CreateEvent((SECURITY_ATTRIBUTES*)null, true, false, null);
 
 			Task.Run(() =>
 			{
 				LaunchHelper.LaunchAppAsync(filePath, null, null).Wait();
-				SetEvent(eventHandle);
+				PInvoke.SetEvent(hEventHandle);
 			});
 
 			_ = CoWaitForMultipleObjects(
 				CWMO_DEFAULT,
 				INFINITE,
 				1,
-				[eventHandle],
+				[hEventHandle],
 				out uint handleIndex);
 		}
 	}