Deck 14: GUI With Windows Forms: Part 1

Question 1

Event handlers are methods that process events and perform tasks based on those events.

Answer 1

True

Question 2

Events can be:

A) generated within the code of the program
B) started with a click on a button, or other control
C) generated by keyboard input
D) All of the above

Answer 2

D

Question 3

How are event handlers generated

A) by double-clicking on components
B) explicitly writing the code for the event
C) using the Properties window
D) All of the above

Answer 3

D

Question 4

Events occur,for example,when the user clicks the mouse or types on the keyboard and interacts with controls.

Question 5

ListBoxes and ComboBoxes are the same other than the fact that ComboB
oxes have a drop-down list.

Question 6

An example of a component would be:

A) a button
B) a timer
C) a form
D) All of the above

Question 7

By looking up ControlName class and clicking the events section,you can find out all the events and the parameters a control has.

Question 8

An example of software with a GUI is:

A) Windows
B) Internet Explorer
C) Visual Studio
D) All of the above

Question 9

Multicast event delegates must reference methods:

A) with the same name, but a different signature
B) that should all be raised by the same event
C) defined earlier in the program
D) with different names and different signatures

Question 10

All of the controls and components can be found in the tool box.

Question 11

Event delegates act as a go-between for objects raising events and the methods that are handling them.

Question 12

A Panel is used to:

A) group or store components
B) display text
C) create a border around components
D) add style to a form

Question 13

Delegates act as:

A) ways of sorting events
B) a go-between for objects raising events and the methods that handle the events
C) masks for methods that handle events
D) a way to call many methods at once

Question 14

In order to add or remove an event from a delegate,you would use:

A) the Add and Remove methods
B) the Add and Subtract methods
C) the += and the -= operators
D) events can only be added with the += and not removed from a delegate

Question 15

In order to create an event you must click on the event icon in the properties window.

Question 16

A ComboBox can display info and also have the user input info.

Question 17

Many of the components used for Windows apps are defined in namespace:

A) System
B) System.Windows.Forms
C) System.Windows.UI
D) System.Web.UI

Question 18

A Label allows input to be typed into it.

Question 19

Event delegates can contain any method.

Question 20

A GUI allows the user to interact with the program visually.

Question 21

You can use the Tab property to determine the order in which tab
bing will occur.

Question 22

In order to insert a control into a Panel or GroupBox in Design mode one must:
a) manually create the control inside the Panel or GroupBox
b) create a control and then drag it into the Panel or GroupBox
c) create a control and then set it as inside the Panel or GroupBox
d) group several controls and set their MainControl property to the Panel or GroupBox

Question 23

RadioButtons can be used interchangeably with CheckBoxes.

Question 24

All buttons,including checkboxes and radiobuttons,are derived from class Button.

Question 25

What does the method InitializeComponent contain
a) code provided by the user which sets the properties of controls that were added
b) code provided by Visual Studio which sets the properties of controls that were added
c) a and b
d) None of the above

Question 26

Visual Studio provides snap lines to help align controls.

Question 27

The major difference between a CheckBox and a RadioButton is that:

A) RadioButtons are generally grouped to allow choices
B) CheckBoxes usually represent options that allow more than one to be used
C) Only one RadioButton per group can be selected at once
D) b and c

Question 28

Textboxes can enable the Password property,meaning that the user needs a password to use them.

Question 29

The Enabled property does not allow the control to perform actions when it's set to false.

Question 30

An active control is one that:

A) can move about the screen.
B) is most commonly clicked by the user
C) has the focus
D) one that changes, whether it is color or another property, on an event.

Question 31

A difference between textboxes and labels is:

A) textboxes have a drop-down feature
B) labels cannot be changed during runtime
C) textboxes allow the user to enter information into them
D) nothing

Question 32

Property Anchor allows the programmer to prevent form alterations by the user.

Question 33

Using the CheckState property you can determine whether the CheckBox is checked.

Question 34

The Margin property specifies the distance between the docked control and the Form edges.

Question 35

The AutoScroll property will cause a Panel to scroll to the bottom if the controls displayed are too large.

Question 36

GroupBoxes can display captions and do not include scrollbars,whereas Panels can include scrollbars and do no include a caption.

Question 37

GroupBoxes and Panels are used to:

A) bundle a bunch of controls into one package
B) allow more than one RadioButton to be true at the same time if the radio buttons are on different GroupBoxes or Panels
C) organize the form in a more orderly fashion
D) All of the above

Question 38

Panels have the ability to have scrollbars should their contents get too big.

Question 39

Docking and anchoring are easy ways to:

A) allow a form to change size without altering the form too much.
B) prevent users from changing the layout of the window.
C) prevent a user from resizing the form.
D) All of the above

Question 40

GroupBoxes have a text display and can have scrollbars inserted into them.

Question 41

When adding a ToolTip component from the Toolbox,it appears on the arbitrary location on the Form.

Question 42

The Directory class can be used to find specific images on the computer.

Question 43

The GetCurrentDirectory is used to return the location of the current working directory (the location from which the program is running).

Question 44

Only one RadioButton can be checked per form on the screen.

Question 45

Mouse interaction with the GUI is limited to click,press,and move.

Question 46

What does the InitialDelay property of the ToolTip determine

A)The amount of time that the tool tip appears while the mouse is over a control.
B)The amount of time that a mouse must hover over a control before a tool tip appears.
C) The amount of time between which two different tool tips appear.

Question 47

When a ToolTip is being displayed,its appearance remains the same.

Question 48

When obtaining the coordinates of the mouse,they are

A) always taken from the main form of the program
B) relative to the control that caused the event
C) taken from the center of the form
D) start from wherever the mouse is at that second

Question 49

MouseUp and MouseDown events are used when the mouse moves up or down.

Question 50

The Directory class is found within the System namespace.

Question 51

What control should you use to restrict a user's choice to a specific range of numeric values,

A)NumericUpDown
B)TextBox
C)NumberBox
D)None of the above

Question 52

When using mouse coordinates,(0,0)is located in the:

A) bottom left
B) bottom right
C) top left
D) top right

Question 53

What is a tool tip useful for

A)tip of the mouse is blinks while hovering over an item in a GUI
B)the tip of the mouse is highlighted while hovering over an item in a GUI
C)displays helpful text under the mouse while hovering over an item in a GUI
D)All of the above

Question 54

In order to find out which key the user is pressing you should use the:

A) KeyChar property to return the pressed key
B) Key property to return the pressed key
C) KeyPress property to return the pressed key
D) GetKey property to return the pressed key

Question 55

The StretchImage property is used to:

A) change the size of the image to fit the PictureBox
B) change the size of the PictureBox to fit the image
C) find a medium between the PictureBox and the image
D) make the picture as large as possible while still maintaining quality

Question 56

The AutoSize property is used to:

A) change the size of the image to fit the PictureBox
B) change the size of the PictureBox to fit the image
C) find a medium between the PictureBox and the actual picture
D) make the picture as large as possible while still maintaining quality

Question 57

What does the ReadOnly property indicate

A)the number of the control cannot change
B)the user cannot click the buttons to select a number into the control
C)the user cannot type data into the control
D) all of the above

Question 58

PictureBoxes can be used with ·gif,·jpg,bitmaps,icons and metafiles.

Question 59

CheckBoxes and RadioButtons have a CheckedChanged event that's raised whenever the state of that control is altered.

Question 60

The Clicks property of class MouseEventArgs is used to determine the number of times a Button was clicked.

Question 61

In order to use modifier keys you should:

A) use the ModifierKey event.
B) use the KeyData property.
C) use the ModifierKeyHandler.
D) modifier keys have to be dealt with manually.

Question 62

Pressing Enter to make a Button become depressed is not a key event;it's set in the control's properties.

Question 63

KeyPress events cannot deal with modifier keys.

Question 64

Key events are more important to the program than other events.