The document discusses scrollbars, their properties, events, and how to use them in programs. Scrollbars have minimum, maximum, and current value properties and fire change and scroll events. They allow users to select a numeric value by dragging an indicator or clicking arrows. The document also mentions textboxes, which allow displaying and editing text, and provides an example code to convert between Celsius and Fahrenheit temperatures.

1. The scrollbars
controls

2. The scrollbar control whichconsist of
horizontaland vertical controls can
also be described as value controls
or arrow controls or arrow controls.

4. 3 PROPERTIES OF A
SCROLL BAR
MIN–Controls the minimum value of the
value property.
MAX- Controls the maximumvalue ofthe
value property.
VALUE–Retrievesor sets the current
numeric value.

5. 2 scrollbars event
Change event – It is an event generated when
the users clickan arrow or the scrollbar itself.
Scroll Event –it is an event similar tothe
change event exceptthat when the user drags
the scrollbar indicator.

6. TEXTBOXES

7. -Textbox seems to be the simplest
control.
-The textbox allows you to display text
and provides an easy way for the users
to and edit text for the program to
retrieve information that was entered.

8. Codes for converting
temperature
Private Sub convert_Click ()
Dim c As double, F as double
C= txtCentigrade.text
F= (c * 1.8) + 32
Txtfahrenheit.text = f
End sub