When I run an 8.1 app in Windows 10 an option to enter fill screen mode is available in the title bar in addition to min/max/close. However when I run the Windows 10 version of the app there is no full screen option, only min/max/close. I can use TryEnterFullScreenMode() on startup to enter full screen but there is no option for the user to enter it on the title bar.
I'm sure it's a simple answer, but where do I find the methods/properties to show this full screen option on the title bar? I've done some searching but I'm just not seeing it anywhere.

I didn't find the right solution from the Internet.

-References
-https://social.msdn.microsoft.com/Forums/windowsapps/en-US/b39161ee-733c-4b7e-9629-a2545dda0812/uwpdxxamladding-a-full-screen-button-in-the-title-bar?forum=wpdevelop

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