about visual basic visual basic 6.0 v/s other version visual basic programming form in visual basic objects in visual basic important controls visual basic statement loop statement conditional loop do until loop

2.  Visual basic is a tool that allows you to develop
windows(graphical user interface GUI) applications.
 Visual basic is even-driven, meaning code remains idle until
called upon to respond to some event()button pressing, menu
selection,…)
Event processor
Event
procedures
Event?
Basic
Code
Basic
Code
Basic
Code

3.  The original visual basic for DOS and visual basic for
windows were introduced in 1991.
 Visual basic 3.0 was released in 1993.
 Visual basic 4.0 released in late 1995(added 32 bits
application support).
 Visual basic 5.0 released in late 1996. new environment,
support creation of active X controls, deleted 16 bit
application support.
 And, now visual basic 6.0(faster complier active X control
object).

4.  Visual basic is a programming languages that allows you to
program in a windows environment.
 You create a “ from ” with several “object”.
 You set the properties of object.
 You write event handler to response to user’s input.

5. VB programming
Project
Form1 Form2 Form3
object
object
text
box
butto
n
Picture
box
Button
Text box

6.  You create a form that is your graphical user interface.
 Has places to input values.
 Has button to click.
 Has other user inter face elements, example: menu, scroll
bar..

7.  Everything in visual basic is object, forms, button,…
 Three elements of object:
 Properties
 Methods
 Event handlers. Properties(si
ze, caption)
Methods(prin
t..)
Event
handler(com
mand1_click(
))

8.  Text box's  area where you enter text
 Command button you click on them to do something
 Picture box’s output your result.
text1
Push me now

9.  In visual basic program(code there are four basic
parts)
◦ Declarations of variables and constants
◦ Inputting variables
◦ Operators for variables
◦ Outputting variables

10. Visual basic support statement to perform loops. The loops
statement cloud have different structure as follow:-
1)counter loop
2)conditional loop
Counter loop:-
loop apply programming statement for fixed number of times
using counter(
for...next)statement.

11. Conditional loop
loop repeat programming statements according to
specific condition. There are two type of conditional
loop:-
1)do while
2)do until
Do while loop:
In this loop the statement will be implement and
repeated when ever the condition satisfied.

12. Do until loop:
 In this loop the statement will be implement and
repeated when ever the condition not satisfied, (i. e)
the loop will be stopped when the condition satisfied.
general format:-
Do until condition
statement
loop