Visual Programming MCQs with Answers
Practice important Visual Programming MCQs with answers and explanations.
Multiple Choice Questions
Q441: What is the purpose of the aboutdialog_mouserightbuttondown method in the aboutdialog class?
- A: To display event information and toggle border of control
- B: To handle button click events
- C: To initialize the window
- D: To handle listbox selection changes
View Answer
A
Q442: In the aboutdialog class, what type of event does listbox_selectionchanged handle?
- A: Mouse button events
- B: Keyboard events
- C: Listbox selection changes
- D: Button click events
View Answer
C
Q443: What does base.OnKeyDown(e); do in the OnKeyDown method?
- A: Calls the base class method to handle key down event
- B: Sets a keyboard focus to the element
- C: Initializes the key event
- D: Raises a key event
View Answer
A
Q444: What does the Button_Click method in the aboutdialog class display?
- A: The source of a button click event
- B: The current mouse position
- C: The selected item in a listbox
- D: The title of the window
View Answer
A
Q445: What is the purpose of KeyboardDevice.IsKeyDown method?
- A: To check if a specific key is pressed
- B: To get the state of all keys
- C: To set the keyboard focus
- D: To handle key events
View Answer
A
Q446: What does e.KeyboardDevice.Modifiers & ModifierKeys.Alt check for?
- A: Whether the Alt key is pressed
- B: Whether the Ctrl key is pressed
- C: Whether the Shift key is pressed
- D: Whether the Windows key is pressed
View Answer
A
Q447: Which of the following events is NOT a mouse event?
- A: MouseEnter
- B: MouseLeave
- C: MouseWheel
- D: TouchDown
View Answer
D
Q448: What is the function of Mouse.Capture in WPF?
- A: Captures the mouse input for an element
- B: Releases the mouse capture from an element
- C: Sets the mouse position to a specific element
- D: Initializes mouse event handling
View Answer
A
Q449: How does a ListBox handle selection changes if the listbox_selectionchanged event is defined?
- A: It will not handle selection changes
- B: It displays a message about the selected item
- C: It changes the background color of selected items
- D: It toggles the visibility of the ListBox
View Answer
B
Q450: What does the PreviewMouseMove event do?
- A: It handles the mouse movement event before it bubbles up
- B: It handles the mouse movement event after it bubbles up
- C: It captures the mouse movement event
- D: It handles the mouse movement event directly on the source
View Answer
A