The Visual Basic Integrated Development Environment

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The Visual Basic Integrated Development
Environment
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Visual Basic Startup Screen

• Main window
• Form window
• Project window (Project Explorer)
• Properties window
• Form layout window
• Toolbox

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Visual Basic Objects

• All of the controls in the toolbox are objects.
  The form is also an object.
• Visual Basic Objects have
• properties
• events
• methods

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Object Properties

• A property is a named attribute of an object.
• used to change the behavior and appearance of an
  object
• can be set at design time or with code at run
  time
• frmFirst.BackColor vbBlue

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Object Events

• action taken by the object in response to an
  event such as a mouse click or key press
• an event procedure tells an object how to respond
  to an event
• Example
• Private Sub Form_Click()
• lblNew.Caption You clicked the form!
• End Sub

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Object Methods

• code held by the object that operate on the
  objects data
• methods in Visual Basic are predefined procedures
• frmFirst.PrintForm

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The Code Window
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Projects

• Every Visual Basic application is defined and
  saved as a project.
• Each project contains a collection of files such
  as forms or modules.
• Save all forms and modules individually within
  the project.
• Save the project (.vbp extention)