Window Programming(Computer ) Questions and answers for exam Preparation

Question 1. Window class, onEnable/1, defines

is executed when a window is becoming visible or is being hidden
when a window is being disabled or enabled this event is executed
this event is executed when the user switches to another window of the same application
when a window receives the keyboard focus this event is executed

Explanation:-

Answer: Option B. -> when a window is being disabled or enabled this event is executed
Answer: (b)

Question 2. Checkbox in window programming

displays text and can be clicked with the mouse or spacebar
a checkmark which the user can select
a list from which one item can be selected.
area in which text may be entered.

Explanation:-

Answer: Option B. -> a checkmark which the user can select
Answer: (b)

Question 3. Window class, onKeyUp/3, defines

a key on the keyboard is pressed
a key on the keyboard is released
a mouse button was double clicked
the user clicks on a window

Explanation:-

Answer: Option B. -> a key on the keyboard is released
Answer: (b)

Question 4. Combobox in window programming

displays text and can be clicked with the mouse or spacebar
a checkmark which the user can select
a list from which one item can be selected.
area in which text may be entered.

Explanation:-

Answer: Option C. -> a list from which one item can be selected.
Answer: (c)

Question 5. Memo in window programming

does nothing except draw a rectangle, it is used to visually group controls together
displays text
for input of multiple lines of text
none of these

Explanation:-

Answer: Option C. -> for input of multiple lines of text
Answer: (c)

Question 6. Window class, onChar/3, defines

during the processing of a key this event is executed with the ASCII value of the key pressed
a menu command was selected
a menu item is selected
a window was resized

Explanation:-

Answer: Option A. -> during the processing of a key this event is executed with the ASCII value of the key pressed
Answer: (a)

Question 7. Window class, onSetCursor/3, defines

the window wants to know what cursor it must display for the mouse pointer
the mouse is moved over a window
when a mouse button is pressed this event is executed
a mouse button is released

Explanation:-

Answer: Option A. -> the window wants to know what cursor it must display for the mouse pointer
Answer: (a)

Question 8. Window class, onMouseDoubleClick/5, defines

a mouse button was double clicked
the user clicks on a window
a key on the keyboard is pressed
a key on the keyboard is released

Explanation:-

Answer: Option A. -> a mouse button was double clicked
Answer: (a)

Question 9. All the classes necessary for Windows programming are in the module

win.txt
win.std
win.main
none of these

Explanation:-

Answer: Option A. -> win.txt
Answer: (a)

Question 10. Window class, onMouseUp/5 , defines

the window wants to know what cursor it must display for the mouse pointer
the mouse is moved over a window
when a mouse button is pressed this event is executed
a mouse button is released

Explanation:-

Answer: Option D. -> a mouse button is released
Answer: (d)