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3.9 to 3.15.  Also refer to as Program  Contains set of instructions that tells the computer how to perform specific task.  Each line of code is referred.

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Presentation on theme: "3.9 to 3.15.  Also refer to as Program  Contains set of instructions that tells the computer how to perform specific task.  Each line of code is referred."— Presentation transcript:

1 3.9 to 3.15

2  Also refer to as Program  Contains set of instructions that tells the computer how to perform specific task.  Each line of code is referred to as a statement.

3  Is a block of code that executes in response to an event.  Event (User Event) – is a way in which the user can interact with an object, such as clicking a button.  Specific actions will be taken when the user clicks on the button.

4  Container for program code.  Code Editor – is the area displaying the form module View Code buttonView Object button

5  Display by double-clicking on the form.  Display by clicking on the View Code Button in the Project Explorer.  Clicking the button beside the view code button returns you back to the form.

6  Removes a form from memory and ends the application.  Unload statement requires a form name to be unloaded.  If the form to be unloaded is the current form, then you could use Me

7

8  Select object name from Object list and then a corresponding event is selected from the Event name.

9  Indicates that the procedure cannot be accessed outside of the form module.  Sub declares the procedures  End Sub – ends the Sub statement.  Body is between Sub and End Sub statements.

10  The interface and program code of an application are printed by selecting the print command from the file menu  CTRL + P

11  File menu – Select the Remove Project command.

12  Assignment – is used to change the value of an object property at run time.  Assignment Statement changes property values using the equal sign.  Each Object property can only be assigned a valid property values.

13  Is displayed when typing an object’s name and a dot notation mark.

14  Name – Cannot be change during run time by an assignment statement  Caption – Text in double Quote lblMessage.Caption = “Adios”  Font – has several Subproperties Size – 0 – 2048  Example: lblMessage.Font.Size = 10 Bold & Italic are True or False  Example: lblMessage.Font.Bold = True Name – enclosed in double quote  lblMessage.Font.Name = “Arial”  Alignment – 0-left, 1 – right, 2 – center

15  Name – can not be changed during run-time through the assignment statement.  Caption – Can assigned text using double quotes. Example: cmdCancelorDone.Caption = “Done”.

16  Name – can not be changed during run-time through the assignment statement.  Caption – Can be assigned text using double quotes. Example: frmUserApp.Caption = “My Application”

17  Event procedures can also be written for form events.  The Form_Load event procedure is executed when the form is loaded into memory.(Application is started)  Examples Private Sub Form_Load() lblSample.Caption = “This text is centered.” lblSample.Alignment = 2 End Sub

18  Changing object property values in the Form_Load event procedure is alternative to setting property values in the Properties window.  Initializing the form – Setting object properties through the Form_Load event.

19  Comments – are used to explain and clarify program code for a human reader.  No effect on how the application runs.  Single quotation mark (‘) begins a comment  Mark code that is ambiguous or misleading.  Example: lblSample.Alignment = 0 ‘left justify

20  File menu – Open Project  CTRL + O  Open Project Button on the Tool Bar


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