Specifies the general type of an event
The event is related to touches on the screen.available in ios 3.0 and later.declared in uievent.h.
The event is related to motion of the device, such as when the user shakes it.available in ios 3.0 and later.declared in uievent.h.
The event is a remote-control event. remote-control events originate as commands received from a headset or external accessory for the purposes of controlling multimedia on the device.available in ios 4.0 and later.declared in uievent.h.