1. Components Chris North cs3724: HCI

2. Presentations taylor mitchell chris henry Vote: UI Hall of Fame/Shame?

3. Quiz Fill in the blank: Users tasks are ___technology_____-free. Why do you need a repaint procedure? Window rearranging causes erasing Must be prepared to repaint at any time

4. Object-oriented vs. Component-oriented Code Customized by editing code Language dependent Compiled binary Often UI focused Customize by methods, properties Events Portable, language independent Market-able!

5. Technologies Microsoft dll OLE ActiveX / COM (component object model).Net Java JavaBeans

6. 2 Types of ActiveX Components ActiveX Controls Widgets that can go on a form *.ocx, *.oca ActiveX Executables / dll’s Independent programs that can be controlled “OLE Automation” *.exe, *.dll, *.tlb

7. Controls in VB Project | components | controls E.g. a webbrowser control

8. ActiveX Exe in VB Project | references E.g. controlling IE

9. Object Models

10. VB Object Browser

11. Creating controls VB: “user control” project

12. Databases Tables –Fields = Columns = attributes –Records = Rows = items –Values = Cells Queries

13. Database Components Microsoft: ODBC DAO (data access objects) Old style, more complete ADO (ActiveX data objects) New style, less complete

14. ADO Components Data connection “DSN=MS Access 97 Database; DBQ=c:\states.mdb;” Recordset Contains 1 row at a time Fields

15. ADO in VB Data connector Data widgets Accessing data

16. Next Project 1 due feb 7 (1 week) Presentations: Next Tues: john charonko, jaime spicciati Next Thurs: terrence witt, mohamed hassoun