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CSI 101 Elements of Computing

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  1. CSI 101Elements of Computing Spring 2009 Lecture #12 – Using Visual Basic Developer Studio Monday, March 23rd

  2. Visual Studio • Development environment for Visual Basic • Makes creation of VB applications easier • Provides toolbars to assist developer • Packages application in desired form • Executable • DLL

  3. Opening Screen

  4. Development Area • Workarea • Can see forms, code, and available toolbars • Project Window • Shows all forms in Project/Application • Properties Window • Shows properties of current object • Current object is the one highlighted in the workarea

  5. Project Window Properties Window

  6. 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

  7. File options

  8. View options

  9. Debug options

  10. 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 point • Object will automatically be added • It becomes current object, with Properties window updating

  11. 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

  12. Text Box Properties • (Name) : Name of object as referenced in code • Alignment : Text aligns with what? • Left – begins to left of box • Right – stops at right edge • Center – Centered in box • Font : Font style • Fore Color : Font color

  13. 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

  14. 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

  15. 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 event • Form_Load • CommandButton_Click • TextBox_Change

  16. Common Events • Command Button • Click : Occurs when button is “clicked” • Text Box • Change : Value is changed or added • GotFocus : cursor arrives in text box • LostFocus : cursor leaves text box

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