Microsoft Visual Basic

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Microsoft Visual Basic

• Microsoft Visual Basic or simply VB is an
  incarnation of the old BASIC language. It gives
  you a complete and powerful Windows application
  development system in one package. VB gives you a
  wide array of software tools to create diverse
  applications like database systems, games, and
  mathematical programs.

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Topics

• Basic of Visual Basic
• Forms, Labels, and Shapes
• Interactivity using TextBoxes and CommandButtons
• Data Types, Arithmetic Operators Precedence,
  and Common Functions
• Logical Structures

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• Loop Structures
• MsgBox() and InputBox()
• Frames and OptionButtons
• CheckBox
• ListBox and ComboBox
• Horizontal and Vertical Scrollbars
• FileListBox, DirectoryListBox, and DriveListBox
• ImageBox and PictureBox
• Timer

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Topic One Basic of Visual Basic

• It is a little known fact that you can write a
  VB program from scratch using nothing more than a
  simple text editor, such as the Edit or Notepad
  applications that come with Windows. In fact, the
  Visual Basic project files are exactly that -
  text files. However, writing a project from
  scratch would involve a lot of tedious, detailed
  manual entries.

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• To simplify the task, Microsoft has built in to
  VB a software program to help you write your VB
  projects. That software, known as the Integrated
  Development Environment (IDE for short) is what
  comes to the screen when you start VB.

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Topic Two Forms, Labels, and Shapes

• Forms are the windows that you see at runtime.
  They serve as containers of controls such as
  Labels and CommandButtons.
• Labels hold text that appears on the Form.
  Labels cannot be edited directly. You use a
  Label, as its name obviously implies, to label a
  control, to provide instructions, etc.

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• The Shape control provides you with basic shape
  objects such as Rectangles, Squares, Ovals, and
  Circles.

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Topic Three TextBoxes and CommandButtons

• TextBoxes accepts text input such as the users
  name or address.
• CommandButton is a control that you press to tell
  a VB application to perform a particular task.

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Topic Four Data Types, Arithmetic Operators, and
Common Functions

• Data types control the internal storage of data
  in Visual Basic.
• Arithmetic operators manipulates data in Visual
  Basic.
• Common functions converts data in Visual
  Basic(e.g. val(), Str(), and IsNumeric()).

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Topic Five Logical Structures

• Logical structures allow nesting in the program
  flow. You might want to do a particular routine
  if a certain condition is true, and do another
  routine if it isnt.

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Topic Six Loop Structures

• Loop Structures are statements that execute
  instructions repeatedly. A common practical
  application is when you need to compute 36.
  This expression is evaluated by multiplying
  itself 6 times.

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Topic Seven MsgBox() and InputBox()

• MsgBox() and InputBox() ask the user questions
  or display error messages and advise the user.

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Topic Eight Frames and OptionButtons

• Frames group the buttons in sets.
• OptionButtons give users an array of choices. By
  clicking an OptionButton, the user selects or
  deselects an OptionButton.

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Topic Nine CheckBox

• CheckBoxes work just like the OptionButton, with
  two differences a selected CheckBox shows the
  selection with a checkmark and are never mutually
  exclusive. Therefore, the user can select one or
  more CheckBoxes even if those boxes reside in the
  same Frame or on the same Form.

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Topic Ten ListBox and ComboBox

• ListBox gives the user a choice of several
  values. The user selects an option instead of
  typing a value into a Textbox.
• ComboBoxes work much like ListBoxes except that
  these may allow the user to add items to a
  ComboBox at runtime through a built-in TextBox.

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Topic Eleven Horizontal and Vertical Scrollbars

• Scrollbars let users control value changes.
  Rather than type specific values, the user can
  move the scrollbar with the mouse to specify
  relative positions within a range of values.

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Topic Twelve File, Directory, and Drive ListBox

• A FileListBox is a list of files in a specified
  directory.
• A DirListBox displays the directory structure of
  a specified drive.
• DriveListBox lists the drive structure of the
  users computer.

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Topic Thirteen ImageBox and PictureBox

• Imaginative use of graphics and animation can
  greatly enhance an application. There is a wide
  room in VB for creativity when it comes to
  devising ways of acquiring, manipulating and
  using images. Two controls serve this purpose
  the ImageBox and PictureBox controls.

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Topic Fourteen Timer

• The Timer control works in the background you
  do not see it on the Form at runtime. The
  primary purpose of a Timer is to trigger an event
  at a certain interval.
• About me!

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My info

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