OpenCV_4.2.0/opencv-4.2.0/samples/winrt_universal/PhoneTutorial/App.xaml

<Application
    x:Class="PhoneTutorial.App"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:PhoneTutorial">

</Application>