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Event Driven Programming

Chr
number to
other bases
Format. L Case. U Case
Number to
string
Data Serial. Data Value
One data
type to
Hex. Oct
another
Data to day.
Format, Str
month,
weekday, or
CBool, CByte, CCur, CDate, CDbl, CDec, CInt, CIug, CSug,
year
C Str, CVar, CVErr, Fix Iut
Time to
hour
Day, Month, Week, year
minute, or
second
string to
ASCII value Hour, Minute, Second

String to Ass
number Val
Time to
serial Time Serial, Time Value
number

Note that you can cast variables from one type to another in Visual Basic using
the functions CBool(), CByte(), and so on.

4.3.4 Setting Variable Scope
You have just finished creating a new dialog box in your greeting card program, and it is a
beauty. However, you realize there is a problem: the user enters the new number of balloons
to display the greeting card in TextBox1 of the dialog box, but how do you read that value in
the rest of the program when the user closes the dialog box?
It is tempting to set up a global variable, intNumberBalloons, which you fill in the dialog box
when the user clicks on the OK button. That way, you will be able to use that variable in the
rest of the program when the dialog box is closed. But in this case, you should resist the

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