Deck 8: Graphical User Interrfaces

Question 1

GUI-based programs can be configured to respond to various keyboard events and mouse events.

Answer 1

True

Question 2

GUI-based programs are almost always object-oriented.

Answer 2

True

Question 3

The font attribute in tkinger.Label is an object imported from tkinter.font.

Answer 3

True

Question 4

Window components are laid out in the window's three-dimensional grid.

Question 5

The breezypythongui module's IntegerField component is a subclass of the Entry class.

Question 6

In the RGB system, the value #00ff00 represents the color red.

Question 7

By default, a window has an empty title string and is resizable.

Question 8

Command buttons are created and placed in a window in the same manner as labels.

Question 9

In a GUI-based program, the user can usually alter the size of a window by holding the mouse on its lower-left corner and dragging in any direction.

Question 10

The attributes of each window component are actually stored in a list.

Question 11

By default, a newly opened window shrink-wraps around its components and is resizable.

Question 12

GUI-based programs use windows that contain various components, also called window objects or gadgets.

Question 13

A method header looks very different from a function header.

Question 14

The creation of a customized version of an existing class is called subclassing.

Question 15

The values that can be used within the sticky attribute are "T, D, L, R".

Question 16

As a rule of thumb, when you are defining a new class of objects, you should look around for a class that already supports some of the structure and behavior of such objects, and then subclass that class to provide the service you need.

Question 17

A button has a state attribute, which can be set to "enabled" or "disabled".

Question 18

The Tkinter module supports the CMYK color system, but not the RGB color system.

Question 19

Command buttons can display text but not images.

Question 20

The addButton method returns an object of type tkinter.Button.

Question 21

One of the requirements for a breezypythongui-based Python script you're writing is that you be able to use a slider bar for selecting a value from a range of values. What type of window component do you want?

A) EasySlider
B) Scale
C) SlideRule
D) EasyRange

Question 22

In the breezypythongui module, what class provides the basic functionality for any window, such as the command buttons in the title bar?

A) WindowFrame
B) ProgFrame
C) BreezyFrame
D) EasyFrame

Question 23

What two items are included in the class header of a class defined in Python? (Choose two.)

A) The class name, conventionally capitalized.
B) The class arguments.
C) The list of one or more parent classes.
D) The required parameters.

Question 24

Other than specifying key values when performing the method call to EasyFrame, what can you use to change a window's attributes?

A) You can overload the class and create an identical class.
B) You can utilize the attribute dictionary.
C) You can pass a tuple to the class constructor.
D) You can use the setDefaults() method.

Question 25

What kind of statement can be used to attempt a graceful recovery from an exception?

A) attempt-fail statement
B) if-else statement
C) try-except statement
D) test-succeed statement

Question 26

Lists of strings can be displayed in list boxes.

Question 27

What is NOT one of the more important attributes of a window?

A) The title string.
B) The width and height in pixels.
C) The resizability of the window.
D) The terminal prompt.

Question 28

A GUI-based program displays a window that contains various components, also known by what specific term?

A) widgets
B) gadgets
C) sprockets
D) doodads

Question 29

In order to allow a program to respond to a button click, the programmer must set the button's "response" attribute.

Question 30

Programming that is tied to user-generated actions, such as mouse clicks, is known as what type of programming?

A) user-driven programming
B) event-driven programming
C) access-driven programming
D) object-oriented programming

Question 31

What two keyword arguments can be used to force a horizontal and/or vertical spanning of grid positions? (Choose two.)

A) gridspan
B) rowspan
C) columnspan
D) gridlock

Question 32

The values of an object's instance variables make up its state.

Question 33

What is the "self" parameter utilized for in a class definition block?

A) It is used within the class and method definitions to call other methods on the same object, or to access that object's variables or data.
B) It is used to define the scope of the class in relevance to the rest of the program.
C) It is used to tell the Python virtual machine that the class is locally significant in the particular module or script it is defined.
D) It is used as a shortcut rather than typing out the module name, parent classes, and subclass to which the class belongs.

Question 34

An entry field is a box in which the user can position the mouse cursor and enter a number or a single line of text.

Question 35

What is the name of the standard GUI module for Python?

A) tkinter
B) PyQt5
C) breezypythongui
D) Kivy

Question 36

What happens when you make a new class a subclass of another class?

A) The new class inherits the attributes and behaviors defined in the parent class.
B) The new class becomes subjugated to the parent class, preventing the override of class values.
C) The new class becomes a copy of the ancestor class, and functions under the ancestor class's namespace.
D) The ancestor class and the new class both become global in scope.

Question 37

When using the EasyFrame class to create a window, what method specifically is used to set up any window components to display in the window?

A) __name__
B) __window__
C) __main__
D) __init__

Question 38

In a GUI-based program, what are labels supposed to do?

A) They define the title name of the program that is running.
B) They are boxes within which a program can accept input.
C) They are text elements that describe inputs and outputs.
D) They interactive elements in the program that can be used for selections.

Question 39

GUI-based programs utilize file dialogs in order to allow the user to browse a computer's file system.

Question 40

What EasyFrame method is used to specify if a window is resizable or not?

A) setEnableResize()
B) chgResize()
C) setWindowAttrib()
D) modWindowSize()

Question 41

What attribute can be used to override the default alignment of a window component?

A) align
B) sticky
C) target
D) orientation

Question 42

What are the two functions available in the tkinter.filedialog module used to support file access in a GUI program?

A) askopenfileaccess
B) askfilesystemaccess
C) asksaveasfilename
D) askopenfilename

Question 43

In GUI terminology, what is the name used to describe a rectangular window component with its own grid that is useful for organizing other window components?

A) layout
B) superframe
C) panel
D) combo frame

Question 44

What scenario would be ideal for the use of a prompter box?

A) You require a GUI element that restricts a user to a single choice of items out of a group of items.
B) You require a GUI element to display an error message upon incorrect input.
C) You require a GUI element to prompt for a user's text input.
D) You require a GUI element to allow a large amount of text to be entered by the user.

Question 45

How can you associate a keyboard event and an event-handling method with a widget?

A) You must name the event-handling method "onPress_".
B) You must use the bind method, which expects a string containing a key event.
C) You must map a shortcut in the host operating system to run the script with a specific argument.
D) You must define the key's event in a YAML-based configuration file.

Question 46

What argument can be specified to the two file dialog functions in order to specify the available file types that can be used?

A) defaultextension
B) filetypes
C) fileformat
D) filedata

Question 47

In the RGB system, what hexadecimal value represents the color black?

A) #000000
B) #ffffff
C) #ff00ff
D) #00ffff

Question 48

What class in the breezypythongui module provides a scrollable box for the display and selection of items?

A) EasyTextField
B) TextArea
C) EasyListbox
D) EasyIntegerField

Question 49

What scenario would be ideal for the use of a check button?

A) You require a GUI element that restricts a user to a single choice of items out of a group of items.
B) You require a GUI element to display an error message upon incorrect input.
C) You require a GUI element to prompt for a user's text input.
D) You require a GUI element that can be grouped with other elements that can be selected at the same time.

Question 50

When passing color values to the tkinter module in hexadecimal, what hex string represents the color red?

A) #ff0000
B) #00ff00
C) #0000ff
D) #ff00ff