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Question by Teku-Studios · Sep 29, 2016 at 10:55 AM · c#os

Detect if Windows 10 Anniversary (version number)

Hi there,

Okay, here's the thing. Some users are experiencing this issue with our game: for those who do have Win10 Anniversary Update, the Xbox One controller mapping I did is working nice, but for those using a Win10 pre-Anniversary the controller axis mapping is completely messed up.

So, what I'm going to do is to check which version of Win10 they are using, and apply a different mapping for the XOne pad depending on the current OS version. But I'm a bit lost on one thing: how can I check by code whether their Win10 is Anniversary Update or not? SystemInfo.operatingSystem is of no use, since it is always returning "Windows 10 (10.0.0)".

Thanks in advance.

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Answer by Teku-Studios · Oct 04, 2016 at 11:19 AM

Okay, someone from the Unity tech team (@Tautvydas-Zilys) has shown me how to detect if W10A, I'm copying here his method so any future user looking for this can also know how to achieve this.

 [DllImport("api-ms-win-core-winrt-string-l1-1-0.dll")]
 private static extern int WindowsCreateString([MarshalAs(UnmanagedType.LPWStr)]string sourceString, int stringLength, out IntPtr hstring);
  
 [DllImport("api-ms-win-core-winrt-string-l1-1-0.dll")]
 private static extern int WindowsDeleteString(IntPtr hstring);
  
 [DllImport("api-ms-win-core-winrt-l1-1-0.dll")]
 private static extern int RoGetActivationFactory(IntPtr className, ref Guid guid, out IntPtr instance);
  
 public static bool IsRunningOnAnniversaryUpdateOrNewer()
 {
     try
     {
         const string kAppExtensionClassName = "Windows.ApplicationModel.AppExtensions.AppExtensionCatalog";
         var classNameHString = IntPtr.Zero;
  
         if (WindowsCreateString(kAppExtensionClassName, kAppExtensionClassName.Length, out classNameHString) != 0)
             return false;
  
         try
         {
             IntPtr appExtensionCatalogStatics;
             var IID_IAppExtensionCatalogStatics = new Guid(1010198154, 24344, 20235, 156, 229, 202, 182, 29, 25, 111, 17);
  
             if (RoGetActivationFactory(classNameHString, ref IID_IAppExtensionCatalogStatics, out appExtensionCatalogStatics) != 0)
                 return false;
  
             if (appExtensionCatalogStatics != IntPtr.Zero)
             {
                 Marshal.Release(appExtensionCatalogStatics);
                 return true;
             }
  
             return false;
         }
         finally
         {
             WindowsDeleteString(classNameHString);
         }
     }
     catch
     {
         return false;
     }
 }

It checks whether a Windows runtime class Windows.ApplicationModel.AppExtensions.AppExtensionCatalog exists on the system, which was added in anniversary update:

https://msdn.microsoft.com/library/windows/apps/windows.applicationmodel.appextensions.appextensioncatalog

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avatar image tanoshimi · Oct 04, 2016 at 11:29 AM 1
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Thanks for sharing the solution :)

avatar image Teku-Studios tanoshimi · Oct 04, 2016 at 11:47 AM 0
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No problem :)

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