Date: Mon, 09 May 2005 16:40:26 -0500 (CDT)
   From: Mark Jacobson <jacobson@math-cs.cns.uni.edu>
     To: 810-030-01@uni.edu
Subject: URL for Visual Basic web page...

Hi Visual Basic students,

     Here is the URL:
                      http://www.cns.uni.edu/~jacobson/

     which easily links to:

                      http://www.cns.uni.edu/~jacobson/c030.html

     We got a fast start today, and tommorrow's lecture portion of the
class will review everything that we did in the lab.

     Vertical Scroll Bars have 5 relevant properties:

                      Min,  Max,  LargeChange,  SmallChange and  Value

     Min = 50, Max = 2000, LargeChange = 200, SmallChange = 50
                         and Value = 1000 (milliseconds for Timer1.Interval
                                           will be 1000 to start, but can
                                           go as fast as 50 for 1/20th
                                           second or as slow as 2000 for
                                           a full 2 seconds.

     Timers have two relevant properties:           Interval and Enabled

     The Timer1 object had a Timer event we added some Visual Basic
     code (statements) to.
                             Private Sub Timer1_Timer()
                                 Form1.Backcolor = QBColor(theColor)

                                 theColor = theColor + 1

                                 If theColor > 15 Then
                                    theColor = 0
                                 End If
                             End Sub

     The Vertical Scroll Bar we gave the name vsbSpeed and then
     we programmed its Change event to the following:

                 Private Sub vsbSpeed_Change()
                    Timer1.Interval = vsbSpeed.Value
                 End Sub

     We'll go over all this code and these Visual Basic assignment
and IF statements in class on Tuesday.

     We will review the Properties and Methods and Events for these
and other controls tommorrow.  Try to read over the PowerPoint
presentation linked to from the c030.html page, if you get a chance.

     And start reading over Hour 1, Hour 2 and Hour 3 of the Visual Basic
textbook.  The textbook is broken into 24 small chapters, but unless you
have some experience, you are likely to spent more than an HOUR on at 
least some of them, until we cover that material in class or lab.  So 
don't worry if everything does not make sense until AFTER a class presents 
it and a lab tries it!

     If you install Visual Basic from the CD-ROM on your computer, you 
should be able to easily start playing around with examples after 
tommorrow's 2nd class and lab.  Its overwhelming the first time or two, 
but after that its like riding a bike, easy once you know how to keep your 
balance!

     Mark