winrt xaml - CameraCaptureUI presents window with cropping box how can I control the initialize size of it -

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I am using camera capture UI and it presents a window to the user with a resizeable crop box embedded in the window, How can I control the initial size of the crop box?

After getting the question here I got the answer very soon, of course, to affect the size of the crop window Need to change the aspect ratio on this line of code: aspect factor RITIO = new size (16, 9);

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