Hungarian notation for interface controls
Name:
Date:
Class:
A
Quick Questions
Shade in the A or B circle for each question.
1. Which name follows Hungarian notation for a button that submits a form?
2. Which prefix is normally used for a textbox control that accepts a student's name?
3. True or false: the prefix in lblResult tells you the control is a label.
4. Which control name describes what the control does, as well as its type?
5. Which name is a good choice for a listbox that shows a list of products?
B
Match the Pairs
Draw a line connecting each item on the left to its match on the right.
| Left column | Right column | |
|---|---|---|
| 1txtFirstName | AcboYearLevel | |
| 2lblResult | BbtnSave | |
| 3A button control that saves the entered data, named with the correct type prefix and purpose | CThe name has no type prefix and does not describe its purpose. It should be something like btnSubmit. | |
| 4A combobox control for choosing a year level, named with the combobox prefix | DA label control used to display a result to the user | |
| 5button1 = Button(window, text="Submit") | EThe prefix lst means a list, but an Entry is a textbox. The name should use txt, such as txtName. | |
| 6lstNames = Entry(window) | FA textbox control that collects the user's first name |
C
Definitions
btnSubmit
D
Fill in the Blanks
Complete each line of code by filling in the missing parts.
1.
___Submit = Button(window, text="Submit")
2.
___Name = Entry(window)
name = txtName.get()
3.
___Result = Label(window, text="")
lblResult.pack()
4.
___Students = Listbox(window)
lstStudents.pack()
5.
___House = Combobox(window)
print(cboHouse.get())
E
Spot the Error
Shade in the letter of the line that contains an error.
Question 1
A
txtName = Entry(root)
B
lblResult = Label(root)
C
txtSubmit = Button(root)
Question 2
A
btnNames = Listbox(root)
B
btnAdd = Button(root)
C
lblTotal = Label(root)
Question 3
A
cboHouse = Combobox(root)
B
lblPoints = Entry(root)
C
btnSave = Button(root)
Question 4
A
txtAge = Entry(root)
B
lblAge = Label(root)
C
btnCheck = Button(root)
D
result = Label(root)
Question 5
A
cboYear = Combobox(root)
B
btnEnter = Button(root)
C
lbl1 = Label(root)
Answer Key
Hungarian notation for interface controls
Section A: Quick Questions
Q1
A — btnSubmit
Q2
B — txtName
Q3
A — True
Q4
A — btnCalculateTotal
Q5
B — lstProducts
Section B: Match the Pairs
Q1
txtFirstName → A textbox control that collects the user's first name
Q2
lblResult → A label control used to display a result to the user
Q3
A button control that saves the entered data, named with the correct type prefix and purpose → btnSave
Q4
A combobox control for choosing a year level, named with the combobox prefix → cboYearLevel
Q5
button1 = Button(window, text="Submit") → The name has no type prefix and does not describe its purpose. It should be something like btnSubmit.
Q6
lstNames = Entry(window) → The prefix lst means a list, but an Entry is a textbox. The name should use txt, such as txtName.
Section C: Definitions
Q1
btnSubmit — Hungarian notation for a control: a type prefix (btn button, txt textbox, lbl label, lst list, cbo combobox) plus a purpose, so btnSubmit is clearly a button.Section D: Fill in the Blanks
Q1
btnSubmit = Button(window, text="Submit")Q2
txtName = Entry(window)
name = txtName.get()Q3
lblResult = Label(window, text="")
lblResult.pack()Q4
lstStudents = Listbox(window)
lstStudents.pack()Q5
cboHouse = Combobox(window)
print(cboHouse.get())Section E: Spot the Error
Q1
C — A Button control should use the btn prefix, not txt. txtSubmit makes it look like a textbox. It should be btnSubmit.
Q2
A — A Listbox should use the lst prefix. btnNames suggests a button. It should be lstNames.
Q3
B — An Entry is a textbox, so it needs the txt prefix, not lbl. A label only displays text. It should be txtPoints.
Q4
D — The name has no type prefix, so you cannot tell it is a label. The control should be named lblResult.
Q5
C — The prefix is right, but the name 1 does not say what the control does. A control should be named for its purpose, such as lblError.