Universal Windows® Apps with XAML and C# Unleashed

Revisiting UIElement Gesture Events

UIElement exposes some additional mouse (and pen)-specific gesture routed events that are all related to the lower-level Dragging event:

→ DragOver and Drop—Maps to Dragging events with states of Started/Continuing and Completed, respectively

→ DragEnter and DragLeave—Like PointerEntered and PointerExited, but raised only when dragging (meaning a mouse button is depressed)

These events only work in limited contexts, however. To see them raised on a drop target, its AllowDrop property (or an ancestor’s) must be set to true. Furthermore, the drop source must be made draggable. For example, it could be an element inside a GridView (covered in Chapter 10, “Items Controls”) with its CanDragItems property set to ...