PCPP1 Graphical User Interface Programming Practice Test 3 — 15 Questions

Question 1

Which widget is most suitable for displaying multi-line, editable text?

Accepted Answer

tk.Text(). tk.Text is the Tkinter widget designed for multi-line, editable text input, supporting scrolling, indexing, tags, and embedded windows/images. It is the correct choice when users need to enter or edit paragraphs of text. Entry and Label are single-line or read-only, and Listbox is for selecting items from a list.

Answer

tk.Listbox()

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tk.Entry()

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tk.Label()

Question 2

When using the grid layout manager, which option allows a column to grow when the window is resized?

Accepted Answer

root.columnconfigure(0, weight=1). The columnconfigure() method is used to set the weight of a column, allowing it to expand.

Answer

root.grid_grow(column=0, weight=1)

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root.grid_column(0, resizable=True)

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root.set_grid(0, expand=True)

Question 3

You have a list of options and want the user to select one using a dropdown menu. Which widget should you use?

Accepted Answer

tk.OptionMenu(). tk.OptionMenu() is the correct widget because it is specifically designed to present a fixed set of options as a dropdown menu in Tkinter. It is a subclass of Menubutton that displays the currently selected option and, when clicked, reveals a menu of choices. The user can select exactly one option, and the widget automatically updates the displayed text to reflect the selection.

Answer

tk.ComboBox()

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tk.Select()

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tk.Dropdown()

Question 4

You wish to group several widgets together within a frame. Which widget acts as a container for this purpose?

Accepted Answer

tk.Frame(). The Frame widget is specifically designed as a container to group other widgets.

Answer

tk.Group()

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tk.Box()

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tk.Container()

Question 5

How do you set a specific font for a widget?

Accepted Answer

widget.config(font=('Arial', 12)). The 'font' parameter accepts a tuple or string defining font family, size, and style.

Answer

widget.set_font('Arial', 12)

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widget.style('Arial', 12)

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widget.font = 'Arial 12'

Question 6

Which attribute of a Button widget controls the text displayed on it?

Accepted Answer

text. The 'text' parameter defines the display label of the button.

Answer

value

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caption

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label

Question 7

You need a color chooser dialog in your application. Which module contains this functionality?

Accepted Answer

tkinter.colorchooser. The 'tkinter.colorchooser' module provides the askcolor() function.

Answer

tkinter.dialogs

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tkinter.colors

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tkinter.widgets

Question 8

What is the primary function of the 'bg' parameter in a widget configuration?

Accepted Answer

Sets the background color.. In widget configuration (as used in Python GUI frameworks such as Tkinter and similar toolkits), the 'bg' parameter is the standard abbreviation for 'background', and it sets the background colour of the widget. It accepts colour names (e.g., 'red', 'blue') or hexadecimal colour codes (e.g., '#FF0000').

Answer

Sets the button group.

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Sets the border group.

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Sets the base grid.

Question 9

Which widget is most appropriate for displaying a list of selectable items?

Accepted Answer

tk.Listbox(). The Listbox widget is intended for displaying a list of strings that the user can select.

Answer

tk.Checkbutton()

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tk.OptionMenu()

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tk.Menu()

Question 10

When using the place() geometry manager, what is the purpose of 'relx' and 'rely'?

Accepted Answer

Relative position as a float from 0 to 1.. In Tkinter's place() geometry manager, relx and rely specify the widget's position as a fraction of the parent's width and height, expressed as a float between 0.0 and 1.0. For example, relx=0.5 centers the widget horizontally regardless of the window's actual pixel size. This makes layouts resolution-independent, unlike absolute x/y coordinates.

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Relative font size.

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Relative pixel coordinates.

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Relative Z-index for layering.

Question 11

How do you access the value of a StringVar associated with an Entry widget?

Accepted Answer

var.get(). The get() method is used on the StringVar object to retrieve its current value.

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var.retrieve()

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var.content()

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var.value

Question 12

Which TWO of the following are valid geometry managers in Tkinter?

Accepted Answer

pack. Option A, pack, is a valid Tkinter geometry manager that organizes widgets by packing them against the edges of their parent container in the order they are added. Option E, grid, is also a valid Tkinter geometry manager that places widgets in a two-dimensional table of rows and columns using row and column indices. The other options do not belong: block, align, and flow are not Tkinter geometry managers; Tkinter's third standard geometry manager is place, which is not listed here.

Answer

block

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align

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flow

Question 13

Which THREE of the following are valid ways to configure a widget's appearance after it has been created?

Accepted Answer

widget['bg'] = 'blue'. Option A, widget['bg'] = 'blue', is correct because Tkinter widgets implement the mapping protocol for configuration, so assigning to a widget's option key via item assignment updates that option just like a configuration call. Option B, widget.config(bg='blue'), is correct because config() is the standard Tkinter method for changing one or more widget options after creation, and bg is a valid option name. Option C, widget.configure(bg='blue'), is correct because configure() is simply the full-name alias of config() and performs the identical option-setting operation. Option D is not a valid Tkinter API, since there is no set_bg() method on widgets, and option E is incorrect because style is not a generic widget option that accepts a color string; styling is handled through ttk styles or specific options like bg.

Answer

widget.set_bg('blue')

Answer

widget.style = 'blue'

Question 14

Which TWO of the following events are commonly bound in Tkinter for mouse interaction?

Accepted Answer

. In Tkinter, (option A) is a standard event that fires when the mouse pointer enters a widget, making it a common mouse-interaction binding. (option B) is also standard and fires when the left mouse button is pressed over a widget, so it is directly a mouse interaction event. By contrast, (option C) is not a Tkinter event at all; quitting is typically handled via protocols like WM_DELETE_WINDOW or a command callback. (option D) is a valid Tkinter event but it is a keyboard event, not a mouse event. (option E) is not a valid Tkinter event name; mouse motion is bound using (or for motion while the left button is held).

Answer

<Quit>

Answer

Answer

Question 15

Which THREE of the following are valid parameters for the pack() layout manager?

Accepted Answer

expand. The pack() geometry manager accepts the expand option (B), a Boolean that tells pack to allocate extra space in the parent container to the widget, letting it grow when the window is resized. It also accepts the side option (D), which specifies the edge against which the widget is packed — values are TOP (default), BOTTOM, LEFT, and RIGHT. The fill option (E) is valid as well, controlling whether the widget stretches to fill its allocated parcel; its values are NONE, X, Y, or BOTH. Options A (row) and C (column) are not pack() parameters — they belong to the grid() geometry manager, where row and column specify the cell coordinates for a widget.

Answer

row

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column