Fixed NTSTATUS to Win32 error code conversion

App/Program.cs

@@ -1,7 +1,10 @@
 // See https://aka.ms/new-console-template for more information
 
+using Nefarius.Utilities.DeviceManagement.Drivers;
 using Nefarius.Utilities.DeviceManagement.PnP;
 
+DriverStore.RemoveDriver(@"C:\temp\nonexistent");
+
 const string instanceId = @"USB\VID_054C&PID_0CE6&MI_03\9&DC32669&3&0003";
 
 PnPDevice device = PnPDevice.GetDeviceByInstanceId(instanceId);

src/Util/NtStatusUtil.cs

@@ -18,13 +18,25 @@ public static class NtStatusUtil
     /// <remarks>https://stackoverflow.com/a/32205631</remarks>
     /// <param name="ntStatus">The NTSTATUS value to convert.</param>
     /// <returns>The converted Win32 error code.</returns>
-    public static int ConvertNtStatusToWin32Error(uint ntStatus)
+    public static unsafe int ConvertNtStatusToWin32Error(uint ntStatus)
     {
         NativeOverlapped ol = new() { InternalLow = (IntPtr)ntStatus };
         int oldError = Marshal.GetLastWin32Error();
-        PInvoke.GetOverlappedResult(null, ol, out uint _, new BOOL(false));
+        // tricking GetOverlappedResult to do the conversion for us :)
+        GetOverlappedResult(IntPtr.Zero, &ol, out int _, new BOOL(false));
         int result = Marshal.GetLastWin32Error();
         PInvoke.SetLastError((WIN32_ERROR)oldError);
         return result;
     }
+
+    /// <summary>
+    ///     The CsWin32-generated variant doesn't allow for an empty file handle so we gotta cheat a bit :)
+    /// </summary>
+    [DllImport("Kernel32.dll", SetLastError = true)]
+    private static extern unsafe bool GetOverlappedResult(
+        IntPtr hFile,
+        NativeOverlapped* lpOverlapped,
+        out int lpNumberOfBytesTransferred,
+        bool bWait
+    );
 }