control panel: support for ARM64

Author: vitoplantamura

AmtPtpControlPanel/Main.cs

@@ -15,6 +15,7 @@
 using System.Security.AccessControl;
 using System.Reflection;
 using Microsoft.Win32;
+using System.Diagnostics;
 
 namespace AmtPtpControlPanel
 {
@@ -27,10 +28,12 @@ public Main()
 
         private void ctlInstallDriver_Click(object sender, EventArgs e)
         {
+            bool isArm64 = ArchitectureInfo.IsArm64();
+
             string fn = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Windows),
-                @"System32\DriverStore\FileRepository\amtptpdevice.inf_amd64_5de6239780ba286e\AmtPtpDeviceUsbUm.dll");
+                @"System32\DriverStore\FileRepository\amtptpdevice.inf_" + (isArm64 ? "arm64_fd8449c22cc620c8" : "amd64_5de6239780ba286e") + @"\AmtPtpDeviceUsbUm.dll");
             string src = Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location),
-                @"AmtPtpDeviceUsbUm.dll");
+                @"AmtPtpDeviceUsbUm" + (isArm64 ? "_ARM64" : "_AMD64") + ".dll");
 
             Action<string> showErr = (string str) =>
             {
@@ -453,6 +456,35 @@ public void Dispose()
     // Low level stuff
     //=================
 
+    public class ArchitectureInfo
+    {
+        [DllImport("kernel32.dll", EntryPoint = "LoadLibrary")]
+        public static extern IntPtr LoadLibrary([MarshalAs(UnmanagedType.LPStr)] string lpLibFileName);
+        [DllImport("kernel32.dll", EntryPoint = "GetProcAddress")]
+        public static extern IntPtr GetProcAddress(IntPtr hModule, [MarshalAs(UnmanagedType.LPStr)] string lpProcName);
+        [DllImport("kernel32.dll", EntryPoint = "FreeLibrary")]
+        public static extern bool FreeLibrary(IntPtr hModule);
+
+        [UnmanagedFunctionPointer(CallingConvention.Winapi)]
+        public delegate bool IsWow64Process2(IntPtr process, out ushort processMachine, out ushort nativeMachine);
+
+        public static bool IsArm64()
+        {
+            IntPtr lib = LoadLibrary(@"kernel32.dll");
+
+            IntPtr pfn = GetProcAddress(lib, "IsWow64Process2");
+            if (pfn == IntPtr.Zero)
+                return false;
+
+            IsWow64Process2 isWow64Process2 = (IsWow64Process2)Marshal.GetDelegateForFunctionPointer(pfn, typeof(IsWow64Process2));
+
+            if (!isWow64Process2(Process.GetCurrentProcess().Handle, out var processMachine, out var nativeMachine))
+                return false;
+
+            return nativeMachine == 0xaa64;
+        }
+    }
+
     public class TokenManipulator // https://stackoverflow.com/questions/17031552/how-do-you-take-file-ownership-with-powershell/17047190#17047190
     {
         [DllImport("advapi32.dll", ExactSpelling = true, SetLastError = true)]

README.md

@@ -16,11 +16,11 @@ I'm really happy with the result: the feeling of the MT2 is identical to that of
 
 # Installation
 
-**NOTE**: Only for the MT2 when connected via USB! Bluetooth not supported. ARM64 not supported (at the moment).
+**NOTE**: Only for the MT2 when connected via USB, ie bluetooth not supported.
 
-1) Connect the MT2 to the PC via USB and first install the imbushuo driver: download [this file](https://github.com/imbushuo/mac-precision-touchpad/releases/download/2105-3979/Drivers-amd64-ReleaseMSSigned.zip), unzip it, right-click on the INF file and click "Install".
+1) Connect the MT2 to the PC via USB and first install the imbushuo driver: download [this file (for x86)](https://github.com/imbushuo/mac-precision-touchpad/releases/download/2105-3979/Drivers-amd64-ReleaseMSSigned.zip) or [this file (for ARM)](https://github.com/imbushuo/mac-precision-touchpad/releases/download/2105-3979/Drivers-arm64-ReleaseMSSigned.zip), unzip it, right-click on the INF file and click "Install".
 
-2) Download the two files of this project from the Releases of this repo (save them in the same directory), start the Control Panel and click on "Install Driver".
+2) Download the zip file of this project from the [Releases](https://github.com/vitoplantamura/MagicTrackpad2ForWindows/releases) of this repo, unzip it, start the Control Panel and click on "Install Driver".
 
 # How the Installation Works