Visual Basic.NET How to Program (PDF)

Chapter 16 Graphics and Multimedia 735
Radio buttons
corresponding
to different pizza
styles
Text box
indicates that
Peedy is waiting
for user input
Fig. 16.32 Peedy waiting for speech input.
If a user chooses speech input, a box appears below Peedy displaying the words that
Peedy "heard" (i.e., the words translated to the program by the speech-recognition
engine). Once he recognizes the user input, Peedy gives the user a description of the
selected pizza. Figure 16.33 shows what happens when the user chooses Seattle as the
pizza style.
Peedy then asks the user to choose additional toppings. Again, the user can either
speak or use the mouse to make a selection. Check boxes corresponding to toppings that
come with the selected pizza style are checked for the user. Figure 16.34 shows what happens
when a user chooses anchovies as an additional topping. Peedy makes a wisecrack
about the user’s choice.
The user can submit the order either by pressing the Place My Order button or by
speaking, “Place order” into the microphone. Peedy recounts the order while writing
down the order items on his notepad (Fig. 16.35). He then calculates the figures on his
calculator and reports the total to the user (Fig. 16.36).