In event-driven programs, which is NOT a way that event functions can communicate with each other?

by returning to the main part of the program

The expression mouseTrap.contains(mouseX, mouseY) would most likely be part of code

written by a programmer to respond to a mouse-based event

Which statement is NOT true?

an event is always associated with a graphical object

How does an event-driven program spend most of its time?

it performs functions in response to various kinds of events

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Event-Driven Programming

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Explore the concepts and principles of event-driven programming through a series of challenging questions

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Questions 10

Answers

1
If elevator.centerY -=2 is in onStep, in which direction it will move the elevator?
left
right
up
down
2
In event-driven programs, which is NOT a way that event functions can communicate with each other?
via the value of an app property
via the value of a graphical object property
by returning to the main part of the program
by passing arguments to each other in a call statement
3
The expression mouseTrap.contains(mouseX, mouseY) would most likely be part of code
built into Python to respond to a mouse-based event
written by a programmer to respond to a mouse-based event
written by a programmer to trigger a mouse event
that is part of the definition of onStep
4
Which is the primary event function used for simple animations?
onMousePress
while
+= and/or -=
onStep
5
redHood is a sprite. Which statement before redHood+= 3 will move her right without her moving off the canvas?
if redHood.centeX- 397>= 0:
if redHood.right - 397 >= 0:
if redHood.centerY <= 397:
if redHood.right <= 397:
6
Which statement is NOT true?
event driven programs keep running, awaiting events until they are stopped
the event function that keeps track of time passing is onStep
event driven programs can await many kinds of events at the same time
an event is always associated with a graphical object
7
Which of these is NOT an event function?
contains
onStep
onMousePress
onKeyHold
8
If app.nStepsPerSecond is set to 20, how much time passes during 5 steps?
1/5 second
it depends on how big the steps are
1/4 second
4 seconds
9
How does an event-driven program spend most of its time?
it performs functions in response to mouse presses or mouse movement
it performs functions in response to key presses
it responds to events that happen to graphical objects
it performs functions in response to various kinds of events
10
Once an event-driven program responds to events caused by a user, it never returns to code that isn't part of a function
True
False

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