# Event List

Below is a list of all the events you can listen for using xcmndAddEventListener. To learn more about event listening, please view the previous help page.

These events would be passed in as the second parameter for either xcmndAddEventListener or xcmndRemoveEventListener's. For example, if you're using the videoended event, you'd pass it in like so:

Assign | xcmndAddEventListener with Video_1, videoended, Button_1, success

Regarding mobile device events

If you're coming from a JavaScript background, you probably know that if you are listening for a mousedown on a computer you would listen for a touchstart for a mobile device. This is a common gotcha for those who are not in the know. So CpExtra will first detect whether the learner is watching on a personal computer or a mobile device and then choose the correct event behind the scenes.

Therefore, CpExtra's mousedown event is the same as a touchstart event. The same goes for other events which have mobile equivalents such as: mouseup and mousemove.

# mousedown

Triggered when the learner pushes the mouse down (on a normal computer) or places their finger on the object (if using a touch screen device).


The 'click' event is similiar to the mouse down event, but is more popular because it also ensures the learner releases the mouse on the same object.

# mouseup

Triggered when the learner releases the mouse or lifts their finger from an object.


Someone could mouse down OUTSIDE an object and while holding their mouse down move it over the object you're listening to and then release their mouse, thereby triggering a mouseup event. Often, this is not the interaction you are expecting. What you probably expect is for mouseup to only trigger if the learner first did a mousedown on the same object. To detect this, what you'd do is first listen for the mousedown event. Then when mousedown is triggered, add your mouseup listener.

For this to work, remember to stop listening for mouseup in the mouseup event handler.

# rollover

Triggered when the learner's mouse slides into an object's space or hit area.


On mobile devices the rollover event is usually not incorporated. That's because in the real world people don't drag their finger over the screen to get to a button. They tap a location on screen and immediately move their finger off.

With the advent of the iPad Pro Magic Keyboard however, we may start to see more support for rollover on mobile devices in the future.

# rollout

Triggered when the learner's mouse slides out of an object's space or hit area.


Like with rollover, this event is not generally supported on mobile devices.

# mousemove

Triggered when the learner's mouse or finger moves over an object.

This event differs to a rollover in that once a rollover event has fired, it will wait for the learner to move their mouse outside of the shape before another rollover event can happen.

By contrast, the mousemove event triggers every time the mouse changes locations while staying within the bounds of the object. This could happen multiple times a second.

Why is this useful? Take drag and drop events as an example. You need to know whenever the mouse changes location so that the object you're draging can update its location in response.

# click

Triggered when the mouse (or finger) presses down and releases on the same object.

Special relationship with the doubleclick event

Often, clicking or double-clicking the same part of a user interface causes a different action to occur. If you are listening to a click AND a doubleclick event on the same object, how can CpExtra tell which event has happened? Functionally a doubleclick is the same as two click events.

In this case, when CpExtra detects a single click, it won't immediately trigger the click event. Instead, it will wait to see if another click happens. If it does, then the doubleclick event is triggered rather than the click event. If the time elapses and no second click happens, a click event is dispatched.

How long will CpExtra wait to see if a doubleclick happens? That can be configured by you with the xprefDoubleClickDelay preference variable. By default, it's 400 miliseconds.

# double click

Triggered when the mouse (or finger) presses down and releases on the same object in a short amount of time.

# rightclick

Triggered when the right mouse button presses down and releases on the same object.


This is another event which has no mobile equivalent.

# enter

Triggered when an object enters the Captivate timeline.

when an object appears on the timeline the enter event is triggered

# Video

# exit

Triggered when an object exits the Captivate timeline.

when an object no longer appears on the timeline the exit event is triggered


Pairing the enter, exit and xcmndAddEventListener features can allow you to make set special behaviours which only occur during the time an object appears on the timeline.

# videoended

Triggered when a video object has finished playing.

# audioended

Triggered when a sound attached to a slide object finishes playing. Adding audio to a slide object


The audioended event only works for audio added to slide objects. It is currently not able to detect when slide audio finshes or when audio triggered by an action finishes.

# loaded

Triggered when a Web Object has finished loading.

# error

Triggered when a Web Object fails to load.