CSI 101Elements of ComputingSpring 2009Lecture #12 – Using Visual Basic Developer StudioMonday, March 23rd

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Visual Studio

Development environment for Visual Basic Makes creation of VB applications easier Provides toolbars to assist developer Packages application in desired form

ExecutableDLL

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Opening Screen

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Development Area Workarea Can see forms, code, and available toolbars Project Window

Shows all forms in Project/Application Properties Window

Shows properties of current objectCurrent object is the one highlighted in the

workarea

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PropertiesWindow

ProjectWindow

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Menu Bar File: saving the Project’s data Edit View : change open Windows Project : Add items to Project Build : Compile your Project Debug : Test your application Ignore the others for now

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File options

View options

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Debug options

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Adding objects to Form

Click on icon in toolbox Click on one corner where you want it Holding down mouse button, roll mouse to

ending pointObject will automatically be added It becomes current object, with Properties

window updating

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Form Properties (Name) : Name of form as seen in Project

window Back Color : background color Caption : Title as appears on Title bar Icon : Picture that appears on Windows

application bar

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Text Box Properties

(Name) : Name of object as referenced in code

Alignment : Text aligns with what?Left – begins to left of boxRight – stops at right edgeCenter – Centered in box

Font : Font style Fore Color : Font color

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Text Box Properties, cont Locked : Can user change value in box? Visible : Seen on screen

This property can be changed in procedure code

Often changed to “suddenly” make a text box apper

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Command Button Properties

(Name) Caption : Text that appears on button Enabled : Button can be clicked

Often changed to make a button available only with certain text values

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Object Event Code

Open Code window by double clicking on an object in the Work area

If no code previously, will create event procedure for most common eventForm_LoadCommandButton_ClickTextBox_Change

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Common Events

Command ButtonClick : Occurs when button is “clicked”

Text BoxChange : Value is changed or addedGotFocus : cursor arrives in text boxLostFocus : cursor leaves text box