The Windows 10 version of MobileSheets is written using C# (UWP). File operations rely upon the System.IO namespace as well as their StorageFile/StorageFolder classes. Passing an Android path to a simple function such as System.IO.Path.GetFileName doesn't work at all (an exception is thrown I believe). That's just one example - there are a lot more. That's why I had to implement my own functions for a lot of those types of actions for any code that might encounter an Android path. For that reason, I don't trust any of the Windows APIs enough to correctly handle forward slashes, which is why I've stuck with regular Windows style paths with backslashes.
Mike
Mike