View — Input

Input events are dispatched by RootView's EventRouter and delivered to views through virtual methods. Override the relevant methods in a subclass to handle input.

Pointer events

public virtual void OnPointerEvent(ref PointerEventRef e, EventPhase phase)

Called for mouse and touch pointer events during a specific phase of dispatch (e.g. bubble, tunnel). Override to handle press, move, and release.

For pointer capture (receiving events outside the view's bounds) see CapturePointer / ReleasePointer in State.

Scroll wheel

public virtual void OnScrollWheel(ref ScrollWheelEventRef e)

Called when a scroll wheel or trackpad scroll is dispatched to this view. Set e.Handled = true to stop propagation.

Keyboard

Keyboard events are delivered only to the view that currently holds focus (see Focus).

public virtual void OnKeyDown(ref KeyEventRef e)
public virtual void OnChar(ref KeyEventRef e)

OnKeyDown receives raw key codes (including modifier keys). OnChar receives character input after platform key composition, and is the right place to handle text entry.