Homework

Provide a brief definition of the following terms (in the interface programming context):

• IDE
• Class
• Form
• Control (actually this one has at least two meanings in this context)
• Property
• Event

If you use a source (book or web site), cite your source. (The sites http://whatis.techtarget.com/ and http://www.webopedia.com/ are decent sources for technical definitions.)

Write a program that displays a welcome message in four different languages as shown below.

Challenge: Have the buttons display the accents in Espanol and Francais.

Due: Sept. 3

• Monday

  
  Syllabus
  Hello World in Visual Basic (slideshow)
  
  

• Wednesday

  
  SimpleAdditionZip.zip
  
  

• Thursday

  
  Part 1. Marx Brother Rollover.
  

  The zip file MarxBrosZip.zip contains an exe and some jpeg files. Make a program that behaves like the exe, that is, when the user rolls over the picture the name of the person appears in a label below and clears out when the mouse leaves the picture area. The pictures use the PictureBox control, specifically its Image property.

  Program 2. Math Oddity
  Make a program that behaves like prjMathOddity.exe. The program has the user enter a three-digit number. Then there is a button that concatenates the number with itself (i.e. 123 becomes 123123). The next button divides the concatenated number by 7. Another button divides that result by 11. And the final button divides that by 13. This should bring back the original three-digit number.
  
  

• Friday

  
  MathOddity2Zip.zip. We revisited the program from Thursday's lab with the goal of controlling the user's interaction with the interface. We changed the Buttons' Enabled property and the Textbox's ReadOnly property. We also cleared the context of Textboxes. Finally we introduced the If-Then-Else control structure to determine whether the user's entry was three characters long. (We still don't know if it is a number.)