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This is a series of VBScript statements enclosed through the Function & End Function statements. A Function procedure is same to a Sub procedure, however can also return a value. This can take arguments (variables, constants or expressions which are passed to it by a calling process). If a Function procedure has no arguments, its Function statement has to comprise an empty set of parentheses (). A Function returns a value through assigning a value to its name in one or more statements of the process. The return type of a Function is always a Variant.
In the given example, the Celsius function calculates degrees Celsius from degrees Fahrenheit. While the function is called from the ConvertTemp Sub procedure, a variable having the argument value is passed to the function. The result of calculation is returned to the calling process and displayed in a message box.
Sub ConvertTemp()
temp = InputBox("Please enter the temperature in degrees F.", 1)
MsgBox "The temperature is " & Celsius(temp) & " degrees C."
End Sub
Function Celsius(fDegrees)
Celsius = (fDegrees - 32) * 5 / 9
End Function
Files in a SDI and MDI Application: Both the SDI and MDI projects have 4 implementation files (.cpp extension). These are the files equivalent to the Document Class, View Clas
DIALOG BOXES IN VB The two dialog boxes, namely, the message box and the input box are usually used in the Visual Basic. The message box is used for displaying the messages to
The scope of a variable is finding out by where you declare it. While you declare a variable in a procedure, only code in that procedure can access or alter the value of that varia
A variable is convenient placeholder which refers to a computer memory location where you can store program information which may change when your script is running. For instance,
In VBScript, the While...Wend statement is provided for those who are familiar along its usage. However, due to the lack of flexibility in While...Wend, it is suggested that you us
This section will discuss the fundamentals of VBScript and define concepts such as datatypes, loops and others. VBScript Data Types VBScript contain only one data type called
Record Set: The record set presents the records in a base table or the records retrieved due to the query. The record set falls into 3 classes. These are table type record set
INTRODUCTION TO VB: The Windows programming is an event driven programming. The VB uses the Hungarian Notation for naming the variables. It deals with new data types like HWND,
Variable Length Strings: The Strings can be declared using As or $ as shown in the code below; the msg and msg1 are the two strings and they are assigned the values using '='.
MESSAGES The Windows-based applications do not make explicit function calls to acquire input. They wait for the system to pass the input to them. The system passes input to the
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