Learning about Events
Visual Basic is "Event Driven" language.
What does it mean?
Everything that happening, launch an event.
You've moved the mouse? The "MouseMove" event has been launched.
You've pressed a key? The "KeyPress" event has been launched.
You can program the events.
When the mouse moves, you can change the Form's color (for example),
and when a key is pressed, You can play a MP3 file.
To start programming the events, double click on the form.
You will see the "Code Window" (Figure 20).
The Code Window opened with the Form_Load event.
The Form_Load event occurs when the form is loaded, and this happening
when you start the program.
So the code that you will enter to the Form_Load event will be launched
when the program is being started.
The code that belongs to the Form_Load event should be placed
between Private Sub Form_Load() and End Sub
The Form_Load event should look like this:
Private Sub Form_Load() (The beginning of the Form_Load event)
This is the code that belongs to the Form_Load event
End Sub (The end of the Form_Load event)
Popular Posts
-
Now I will show you how to retrieve the data posted from a HTML file in a JSP page. Consider an html page that prompts the user to enter his...
-
Accessing the Standard CGI Variables: To build the successful web application, you often need to know a lot about the environment in which ...
-
INTRODUCTION TO 'C': C is a programming language developed at AT & T's Bell laboratories of USA in 1972.it was designed by d...
-
SQL aliases can be used with database tables and with database table columns, depending on task you are performing. SQL column aliases are u...
-
Learning about Events (Continue) Lets program the Form_Load event. "MsgBox" is Visual Basic command that launch a message box. for...
-
Steps to follow: 1. Write Person.java as shown below in Code-11.3.a under polypackage directory. (You are welcome to do this work using eit...
-
The Command Button's KeyPress, KeyDown and KeyUp Events The events that will be mentioned in the following pages are commonly used, and ...
-
The SQL AVG aggregate function selects the average value for certain table column. Have a look at the SQL AVG syntax: SELECT AVG(Column1) FR...
-
package interfaceexercise; // Define an interface with three abstract methods. // Any class that implements this interface has to // impleme...
-
We will use the Customers table to illustrate the SQL LIKE clause usage: FirstName LastName Email DOB Phone John Smith John.Smith@yaho...
No comments:
Post a Comment