Use Events

The touch events are either flicks or gestures, and they occur on the ImagXpress control. These events will fire if the user has enabled the event with the EventSetEnabled method and has provided an event handler. If the event is enabled, it will fire whether or not the built-in gesture support is enabled or disabled.

Like the properties, the events all begin with the Touch prefix. The touch events are:

All of the events have parameters that provide all of the information available from the Windows operating system about the touch event.

Some gestures support multiple events throughout the lifetime of the gesture. The event will have a suffix of "Occurring" when the gesture has started and while the gesture is continuing to occur. The event will end in "Occurred" when the event has finished. This gives the developer the choice of just responding to the last occurrence of the gesture. Sometimes gestures that have multiple events will fire even when there is no change in the gesture. These extraneous events are filtered by default with the TouchGestureOccurringEventsFiringMode property. The developer can change the setting on this property to see all of the events that are fired during the lifetime of the gesture.

Other events that fire just once will have a single event.