<viz>.getNumHandlers

Returns the number of handlers listening for the event

 

<viz>.getNumHandlers(
    eventID    

)

 

eventID

An event ID


Remarks

This command will return the number of event handlers registered for the specified event.

Return Value

Integer >= 0

Example

num = viz.getNumHandlers(viz.KEYDOWN_EVENT)
print num,'handlers listening for key presses'