Course visual basic : functions
Course visual basic : functions
Course visual basic : functions
Functions are similar to normal procedures
but the main purpose of the functions is to accept certain inputs and pass them
on to the main program to finish the execution. They are two types of function,
the built-in functions(or internal functions) and the functions created by the
programmers.
The general format of a function is
functionName(arguments)
where arguments are values that are passed on
to the functions.
In this lesson, we are going to learn two
very basic but useful internal functions, the MsgBox( ) and InputBox ( )
functions.
MsgBox ( ) Function
The objective of MsgBox is to produce a
pop-up message box and prompt the user to click on a command button before he
/she can continues. This message box format is as follows:
yourMsg=MsgBox(Prompt,
Style Value, Title)
The first argument, Prompt, will display
the message in the message box. The Style Value will determine what type of
command buttons appear on the message box, please refer Table 10.1 for types of
command button displayed. The Title argument will display the title of the
message board.
The InputBox( ) Function
An InputBox( ) function will display a
message box where the user can enter a value or a message in the form of text.
The format is
myMessage=InputBox(Prompt, Title,
default_text, x-position, y-position)
Prompt - The message displayed normally as a
question asked.
Title - The title of the Input Box.
default-text - The default text
that appears in the input field where users can use it as his intended input or
he may change to the message he wish to key in.
x-position and y-position - the position or the coordinate of the input box.
The procedure for the 3rd button......
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