1. Graphics and Multimedia In visual Studio. Net (C#)

2. Outline Introduction to Multimedia
Loading, Displaying and Scaling Images
Windows Media Player
Adding a Flash Movie
Microsoft Agent

3. Introduction to Multimedia
Visual studio offers many convenient ways to include images and animations in programs
Computing field decades ago mainly used computers to perform arithmetic calculations
We are beginning to realize the importance of computer’s data-manipulation capabilities
Multimedia programming presents many challenges
Multimedia applications demand extraordinary computing power

4. Loading, Displaying and Scrolling Images
C# multimedia capabilities
Graphics
Images
Animations
Video
Image manipulation

5. 1 // Fig. 16.23: DisplayLogoForm.Cs
2 // Displaying and resizing an image. 3
4 // Create class inherits from System.Windows.Forms.Form
4 Public Class DisplayLogoForm: System.Windows.Forms.Form
5 {
// Declaration for all controller
Private System.Windows.Forms.Form.Button SetButton;
…………………………………………….
// Declaration of image and graphicsObject variables
Private Image image = Image.FormFile(“images/Logo.gif”); // load image
Private Graphics graphicsObject; 17
// Sets member variables on constructor
Public DisplayLogoForm() {
InitializeComponent();
// create object graphicsObject
graphicsObject= this.CreateGraphics(); }
The Image method FromFile retrieves an image stored on disk and assigns it to image
Uses Form method CreateGraphics to create a Graphics object associated with the Form

6. Private void SetButton_Click((object sender, EventArgs e){
// get user input
int width = Convert.ToInt32(WidthTxtBox.Text);
Int height = Convert.ToInt32(HeightTextBox.Text);
// If specified dimensions are too large display problem
If (width > 375 || height > 225)
MessageBox.Show("Height or Width too large");
Return ;
44 }
// Clear Windows Form
graphicsObject.Clear(this.BackColor); 47
// Draw image
graphicsObject.DrawImage(image, 5, 5, width, height);
} // End Method SetButton_Click 51
52 } ' End Class DisplayLogoForm
If the parameters are valid, Graphics method Clear is called to paint the entire Form in the current background color
Graphics method DrawImage is called with the following parameters: the image to draw, the x-coordinate of the upper-left corner, y-coordinate of the upper-left corner, width of the image, and height of the image

8. Windows Media Player Windows Media player
Enables an application to play video and sound in many multimedia formats
Motion Pictures Experts Group (MPEG)
Audio-Video Interleave (AVI)
Windows wave-file format (WAV)
Musical Instrument Digital Interface (MIDI)
To use the Windows Media Player control, programmers must add the control to the Toolbox. This is accomplished as following:

9. Windows Media Player 1. Go to ToolBox  Choose Items...
2. Click on the COM Components
tab and scroll down near the
bottom of the List. Look for
Windows Media Player. 3. When you have found Windows
Media Player, check the box
beside it and click on Ok.

10. Windows Media Player 4. The windows media player control
should now be in your Toolbox
5. Drag the control over a form and size
it as needed.

14. Adding Flash Movie
In order to play the Flash movie in your C#.NET application, you should add Shockwave Flash component as COM reference in your project and use Shockwave control added in the Toolbox. The following steps shows you the way:
1. In Solution Explore, right click References and choose Add Reference. In COM tab, add Shockwave Flash.  
2. Right click Toolbox -> Click "Choose Items", in COM Components tab, choose Shockwave Flash Object, then you can see the control in the Toolbox.
3. Drag and drop the Shockwave control on the form, you may get "Failed to import the ActiveX control. Please ensure it is properly registered." error message. Click OK.
4. Right click the project name in Solution Explorer, choose "Rebuild". When the project rebuild successfully, you are able to add the Shockwave control on the form this time.

15. Example

16. Make sure that you have the latest version of Shockwave and Flash Player. (Shockwave) (Flash Player)

17. Microsoft Agent Microsoft Agent
Microsoft Agent is a technology used to add interactive animated characters to Windows applications or Web pages
Microsoft Agent control provides programmers with access to four predefined characters: Genie (a genie), Merlin (a wizard), Peedy (a parrot), and Robby (a robot).

18. Microsoft Agent
Microsoft provides basic information on Agent technology at its Web site:
This section introduces the basic capabilities of the Microsoft Agent control. For complete details on downloading this control, visit:
The following example, Peedy’s Pizza Palace, was developed by Microsoft to illustrate the capabilities of the Microsoft Agent control.
You can view this example at:

19. Fig. 16.28 Peedy introducing himself when the window opens.

20. Microsoft Agent To use MS Agent, you have to add to your ToolBox:
1. Go to ToolBox  Choose Items...
2. Click on the COM Components tab and scroll down near the
bottom of the List. Check MS Agent Control Drag it to your form
Before running any code, you first must download and install the control, speech recognition engine, text to speech engine and the character definitions from the Microsoft Agent Web site listed previously.

22. In addition to the Microsoft Agent object AxAgent1(of type AxAgent) that manages
all the characters, we also need an object (of type IAgentCtlCharacter) to represent
the current character. We create this object, named speaker,