<viz>.getNumHandlers

Vizard 7 » Command Index » Vizard modules » viz » <viz>.getNumHandlers

7.6

Returns the number of handlers listening for the event

eventID

An event ID

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

Integer >= 0

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