2.1 Creating Your First Application
In this section, we will not go into the technical aspects of Visual Basic programming yet, what you need to do is just try out the examples below to see how does in VB program look like:
Example 2.1.1 is a simple program. First of all, you have to launch Microsoft Visual Basic 6. Normally, a default form with the name Form1 will be available for you to start your new project. Now, double click on Form1, the source code window for Form1 as shown in figure 2.1 will appear. The top of the source code window consists of a list of objects and their associated events or procedures. In figure 2.1, the object displayed is Form and the associated procedure is Load.
Figure 2.1 Source Code Window
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When you click on the object box, the drop-down list will display a list of objects you have inserted into your form as shown in figure 2.2. Here, you can see a form with the name Form1, a command button with the name Command1, a Label with the name Label1 and a Picture Box with the name Picture1. Similarly, when you click on the procedure box, a list of procedures associated with the object will be displayed as shown in figure 2.3. Some of the procedures associated with the object Form1 are Activate, Click, DblClick (which means Double-Click) , DragDrop, keyPress and more. Each object has its own set of procedures. You can always select an object and write codes for any of its procedure in order to perform certain tasks.
When you click on the object box, the drop-down list will display a list of objects you have inserted into your form as shown in figure 2.2. Here, you can see a form with the name Form1, a command button with the name Command1, a Label with the name Label1 and a Picture Box with the name Picture1. Similarly, when you click on the procedure box, a list of procedures associated with the object will be displayed as shown in figure 2.3. Some of the procedures associated with the object Form1 are Activate, Click, DblClick (which means Double-Click) , DragDrop, keyPress and more. Each object has its own set of procedures. You can always select an object and write codes for any of its procedure in order to perform certain tasks.
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Figure 2.4 : The output of example 2.1.1 |
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Figure 2.3: List of Procedures |
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Figure 2.2: List of Objects |
Example 2.1.1
Private Sub Form_Load ( ) Form1.show Print “Welcome to Visual Basic tutorial” End Sub Figure 2.4 : The output of example 2.1.1
Example 2.1.2
Private Sub Form_Activate ( ) Print 20 + 10
Print 20 - 10
Print 20 * 10
Print 20 / 10 End Sub
Figure 2.5: The output of example 2.1.2 
You can also use the + or the & operator to join two or more texts (string) together like in example 2.1.4 (a) and (b)
Example 2.1.4(a)
Private Sub A = Tom
B = “likes"
C = “to"
D = “eat"
E = “burger"
Print A + B + C + D + E
End Sub
Example 2.1.4(b)
Private Sub A = Tom
B = “likes"
C = “to"
D = “eat"
E = “burger"
Print A & B & C & D & E
End Sub
The Output of Example 2.1.4(a) &(b) is as shown in Figure 2.7. 
Example 2.1.1
Private Sub Form_Load ( )
Form1.show
Print “Welcome to Visual Basic tutorial”
End Sub
Figure 2.4 : The output of example 2.1.1
Example 2.1.2
Private Sub Form_Activate ( )
Print 20 + 10
Print 20 - 10
Print 20 * 10
Print 20 / 10
Print 20 - 10
Print 20 * 10
Print 20 / 10
End Sub
Figure 2.5: The output of example 2.1.2
Example 2.1.4(a)
Private SubA = Tom
B = “likes"
C = “to"
D = “eat"
E = “burger"
Print A + B + C + D + EEnd Sub
Example 2.1.4(b)
Private SubA = Tom
B = “likes"
C = “to"
D = “eat"
E = “burger"
Print A & B & C & D & EEnd Sub
The Output of Example 2.1.4(a) &(b) is as shown in Figure 2.7.
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