Hi, I am quite new to Windows store app programming. I am trying to create a mspaint like app that I can draw a image with fingers on a touch based device. I used to work on iOS. With iOS, I could do that by creating a subclass of UIView, and response to
the "drawRect:" message to render the invalidated part of the control. With XAML, I didn't find a good way to do that. I noticed there's a UserControl class, but it seems can only be constructed from existing controls. An approach that may work is
to create a IVirtualSurfaceImageSource, and use it as the image source of a brush. However, it looks more low level. I have to handle the rendering and user interaction in separately (Not like on iOS, everything event are handled in the single subclass of
UIView). I wonder what is the most common way people deal with this kind of requirement?
