[Description] Handles CoreApplicationView::Activated. The game app has been brought to the foreground, so the main window is activated. [Event handler] 
OnActivated
O n A c t i v a t e d
O n L o g i c a l D p i C h a n g e d
O n R e s u m i n g
O n S u s p e n d i n g
O n V i s i b i l i t y C h a n g e d
O n W i n d o w A c t i v a t i o n C h a n g e d
O n W i n d o w C l o s e d
O n W i n d o w S i z e C h a n g e d