Exam (elaborations)
INF2611 EXAM PACK 2023
- Institution
- University Of South Africa (Unisa)
QUESTIONS AND ANSWERS
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INF2611EXAM
PACK 2023
QUESTIONS WITH
COMPLETE
ANSWERS
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INF2611-2017-Oct/Nov Memo Tutorials Campus www.tutorialscampus.co.za
Question 1)
1.1)
a)
Use LCD Number widget (QLCDNumber class) to display decimal,
Use QTimer class to perform repetitive timer class
b)
The value() method of the QLCDNumber class returns the numerical value displayed by the LCD
Number widget
c)
The setMode() is used change the base of the numbers (Hex, Dec, Oct, Bin)
self.lcdNumber.setMode(QLCDNumber.Dec)
1.2)
a)
Timers is used to perform a repetitive task; to use a timer you have to create an instance of QTimer
class
b)
setSingleShot(true): set the timer to generate a timeout() signal only once
singleShot(n): set the timer to generate a timeout() signal only once after n millisecond
1.3)
a)
The purpose of selectionChanged() signal is to call function dispdate when a calendar date is
changed
b)
The name of the function that retrieves the date selected by the user is selectedDate() of the
calenderWidget, and the widget that displays the output is the object of the QDateEdit (dateEdit)
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c)
self.ui.dateEdit.setDisplayFormat(‘d MMM yyyy’)
1.4)
Price = 0
If chosenoption == “VIP”:
Price = 200
If chosenoption == “Grand Stand”:
Price = 80
If chosenoption == “East Stand”:
Price = 60
If chosenoption == “Open Wing”:
Price = 40
Totalprice = Price * noOfPersons
Self.ui.PriceInfo.setText(‘Price for ’+ chosenoption+’ is R‘+str(Price)+’. Total for ‘+noOfPersons+’ is:
R’+str(Totalprice))
1.5)
a)
1) By creating an action in the Action Editor and dragging and dropping it into a menu
2) By typing text for menus and menu entries in the menu bar replacing the Type Here
placeholder
b) statusTip is use to make the status bar message to appear when the user hover over any menu
entry, set through the statusTip property
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Question 2)
2.1)
1) Set the focus to the next window in the list of the child windows
2) Set the keyboard focus to the previous window in the list of child windows
3) Close all the sub windows
4) Arranges the sub windows in cascade fashion
5) Arranges the sub windows in tile fashion
6) Set the view mode of the MDI area
2.2)
1) Horizontal Layout: This type of layout arranges widgets next to each other in row
2) Vertical Layout: the vertical layout arranges the selected widgets vertically, in a column one
below another
2.3)
IsCheckable(): This method returns true if the Group Box has checkbox in its title; otherwise it return
false
isChecked(): This method returns true if the Group Box is checked
Question 3)
3.1)
Create database clinic;
3.2.1)
Cursor.execute(“””
Create table patients (patient_id smallint NOT NULL, patient_name char(40), patient_balance
float )“””)
3.2.2)
Cursor(): Returns the cursor object from the connection. The cursor object is used to transverse the
record from the result set.
3.2.3)
Execute(): Used to execute the SQL statement
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