1. Introduction to the Visual Basic Language and Environment
What is Visual Basic?
Visual Basic is a tool that allows you to develop Windows
(Graphic User Interface - GUI) applications. The applications
have a familiar appearance to the user.
Visual Basic is event-driven, meaning code remains idle
until called upon to respond to some event (button pressing, menu
selection, ...). Visual Basic is governed by an event processor.
Nothing happens until an event is detected. Once an event is detected,
the code corresponding to that event (event procedure) is executed.
Program control is then returned to the event processor.
Some Features of Visual Basic
Full set of objects - you 'draw' the application
Lots of icons and pictures for your use
Response to mouse and keyboard actions
Clipboard and printer access
Full array of mathematical, string handling, and graphics functions
Can handle fixed and dynamic variable and control arrays
Sequential and random access file support
Useful debugger and error-handling facilities
Powerful database access tools
ActiveX support
Package & Deployment Wizard makes distributing your applications
simple
