Question 1

The Graphics class does not include a method for drawing
A)lines
B)shapes
C)images
D)strings
E)None of the above

Accepted Answer

The Graphics class includes methods for drawing lines, shapes, images, and strings. Therefore, none of the options A, B, C, or D are correct.

Question 2

The System.Drawing namespace provides rectangle and point structures that can be used when drawing on a 2D plane.

Accepted Answer

The System.Drawing namespace provides both rectangle and point structures that can be used for drawing on a 2D plane. These structures are commonly used in graphics programming to represent shapes, images and other graphical objects.

Question 3

Visual Basic includes tools
A)for drawing 2-D shapes
B)for controlling colors and fonts
C)to support graphics that enable programmers to enhance their Windows apps visually
D)All of the above

Accepted Answer

Visual Basic includes tools for drawing 2-D shapes, controlling colors and fonts, and supporting graphics that enable programmers to enhance their Windows apps visually. Therefore, option D, "All of the above," is the best choice.

Question 4

You cannot create your own Paint event handler,rather you must rely on the default implementation provided.

Accepted Answer

you can implement your own Paint event handler to customize painting behavior.

Question 5

OnPaint is a method that cannot be overridden.

Accepted Answer

it is a Overridable method which is typically overridden in classes that inherit from class Control.

Question 6

You can call the Invalidate method to redraw the graphics in a window.

Accepted Answer

The Invalidate method is used in .NET framework to redraw the graphics in a window.

Question 7

Graphics method Invalidate __________.
A)checks to see if a form is valid
B)invalidates a form
C)clears a form
D)refreshes and updates a form

Accepted Answer

The Invalidate method in graphics programming is used to refresh and update a form or control, causing it to be redrawn.

Question 8

Screen coordinates are measured in:
A)inches
B)centimeters
C)pixels
D)millimeters

Accepted Answer

Screen coordinates are measured in pixels, which are the smallest unit of measurement on digital screens. While the other options (inches, centimeters, and millimeters) are units of measurement commonly used in the physical world, they are not used to measure digital screens.

Question 9

Visual Basic also includes namespaces for multimedia such as the Windows Media Player control.

Accepted Answer

Visual Basic does include namespaces for multimedia such as the Windows Media Player control. This allows developers to integrate multimedia features into their applications.

Question 10

You never call method OnPaint directly because
A)OnPaint is an abstract method.
B)drawing graphics is an event-driven process.
C)OnPaint is a GUI method only so it cannot be called.
D)OnPaint is a class not a method.

Accepted Answer

OnPaint is an event-driven method that is automatically called by the system when a control needs to be repainted. It is not intended to be called directly by the programmer. Drawing graphics is an event-driven process in Windows Forms programming.

Question 11

You'll explicitly call the OnPaint method often.

Accepted Answer

You'll quite seldom explicitly call the OnPaint method because drawing graphics is an event-driven process,usually occurring when a window is

Question 12

In Visual Basic's coordinates system (0,0)is located on the bottom-left of the plane.

Accepted Answer

(0,0)is located on the top-left side of the plane.

Question 13

Every app that derives from class System.Windows.Forms.Form inherits an Overridable method named ________ where most graphics operations are performed.
A)OnPaint
B)Paint
C)Draw
D)None of the above.

Accepted Answer

The OnPaint method is where most graphics operations are performed when deriving an app from System.Windows.Forms.Form. Therefore, the best choice would be A) OnPaint.

Question 14

The Graphics class has methods for:
A)creating pictures
B)drawing lines and shapes
C)drawing only lines
D)creating images

Accepted Answer

The Graphics class is used for drawing lines and shapes on a given component or image. It contains methods like drawLine(), drawRect(), drawOval(), drawPolygon(), fillRect(), fillOval() etc. which helps to draw different types of shapes and lines. While it can be used for creating images, its primary purpose is for drawing graphics.

Question 15

Instead of overriding the OnPaint method,you can add an event handler for the Paint event.

Accepted Answer

Adding an event handler for the Paint event is an alternative to overriding the OnPaint method in Windows Forms application development.

Question 16

To draw on a control using one of the Graphics drawing methods,you must pass a pen or brush object as the first argument to the method.

Accepted Answer

The first argument passed to a Graphics drawing method must be a Pen or Brush object to specify the color and style of the drawn object.

Question 17

What is the GDI+?
A)A specific type of program
B)An app programming interface that provides classes for graphical purposes
C)An acronym for Graphical Depiction Implementation Plus
D)All of the above

Accepted Answer

GDI+ is an app programming interface that provides classes for graphical purposes. Option A is incorrect as GDI+ is not a specific type of program. Option C is also incorrect as Graphical Depiction Implementation Plus is not the correct expansion of GDI+. Option D is incorrect as option A and C are wrong.

Question 18

Visual Basic includes many drawing methods that are inside the System.Drawing and System.Drawing.Drawing2D namespaces.

Accepted Answer

Visual Basic includes many drawing methods that are inside the System.Drawing and System.Drawing.Drawing2D namespaces.

Question 19

Graphics objects contain methods for drawing,font manipulation,color
manipulation,and other graphics-related actions.

Accepted Answer

Graphics objects in programming typically do contain methods for drawing, font manipulation, color manipulation, and other graphics-related actions.

Question 20

Namespaces like System.Drawing and System.Drawing.Drawing2D help make up:
A)GDI
B)GDI %
C)GDI+
D)GDI#

Accepted Answer

GDI+ is a graphics library that is part of the .NET Framework. It provides a set of classes that can be used to create and manipulate graphics objects. The System.Drawing and System.Drawing.Drawing2D namespaces contain the classes that are used to create and manipulate GDI+ objects.

Quiz 15: Graphics and Multimedia

The Graphics class does not include a method for drawing

The System.Drawing namespace provides rectangle and point structures that can be used when drawing on a 2D plane.

Visual Basic includes tools

You cannot create your own Paint event handler,rather you must rely on the default implementation provided.

OnPaint is a method that cannot be overridden.

You can call the Invalidate method to redraw the graphics in a window.

Graphics method Invalidate __________.

Screen coordinates are measured in:

Visual Basic also includes namespaces for multimedia such as the Windows Media Player control.

You never call method OnPaint directly because

You'll explicitly call the OnPaint method often.

In Visual Basic's coordinates system (0,0)is located on the bottom-left of the plane.

Every app that derives from class System.Windows.Forms.Form inherits an Overridable method named ________ where most graphics operations are performed.

The Graphics class has methods for:

Instead of overriding the OnPaint method,you can add an event handler for the Paint event.

To draw on a control using one of the Graphics drawing methods,you must pass a pen or brush object as the first argument to the method.

What is the GDI+?

Visual Basic includes many drawing methods that are inside the System.Drawing and System.Drawing.Drawing2D namespaces.

Graphics objects contain methods for drawing,font manipulation,color manipulation,and other graphics-related actions.

Namespaces like System.Drawing and System.Drawing.Drawing2D help make up: