Touch-specific events

• Handling pointer events in custom controls
  The Symbian platform passes touch events to applications by calling CCoeControl::HandlePointerEventL(). The application that receives these events is the one that owns the window.
• Implementing support for scalable UI
  For the correct control to receive touch events, you must implement support for scalable UI.
• Listening for scrollbar touch events
  If your custom control contains a scrollbar, you need to listen for touch events in the scrollbar.
• Enabling additional touch events for your application
  The Symbian platform provides additional touch events to enable drag events and to specify screen areas for touch events.
• Checking for touch support at runtime
  The Symbian platform now includes AknLayoutUtils::PenEnabled() to check for touch support at runtime to allow for reduced run-time memory consumption if the device does not support touch.