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Windows Programming: Overview, Paradigms, and Borland C++ Builder

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  1. Chapter 0 Overview Windows Programming, C.-S. Shieh, KUAS EC, 2005

  2. Computer Programming • What is programming? • Computers are quick, reliable, and flexible. • The flexibility of computers is a result of the idea "stored-program control". • We instruct computer to perform tasks via programming - the writing of computer control programs. • Windows programming is the writing of computer programs running within Windows environments. Windows Programming, C.-S. Shieh, KUAS EC, 2005

  3. Computer Programming (cont) • Programming paradigms • Hardwired control, in contrast to flexible stored-program control • Machine code • Assembly language • High-level language • Macro of packages, extensions to designed functionality to fit customer's need • Script of operating systems, such as batch files, shell script, ... • Script of virtual machines, such as Netscape Navigator and Microsoft Internet Explorer are virtual machine for JavaScript. Windows Programming, C.-S. Shieh, KUAS EC, 2005

  4. Computer Programming (cont) • Language translators • Assembler • Compiler • Interpreter • Virtual machines Windows Programming, C.-S. Shieh, KUAS EC, 2005

  5. Computer Programming (cont) • High-level programming languages • Procedural • FOrmula TRANslator (FORTRAN) • Beginner's All-purpose Symbolic Instruction Code (BASIC) • COmmon Business Oriented Language (COBOL) • Pascal • C • Functional • PROgramming in LOGic (PROLOG) • Object-oriented • Object Pascal • C++ • … Windows Programming, C.-S. Shieh, KUAS EC, 2005

  6. Object-Oriented Programming • Encapsulation of data and related operators class rectangular { public: int width; int height; int area() { return width*height; } }; int main() { rectangular x; x.width=5; x.height=6; printf("%d",x.area()); } Windows Programming, C.-S. Shieh, KUAS EC, 2005

  7. Object-Oriented Programming (cont) • Inheritance class rectangular { public: int width; int height; int area() { return width*height; } }; class block: public rectangular { public: int depth; int volume() { return width*height*depth; } }; int main(int argc, char **argv) { block x; x.width=5; x.height=6; x.depth=2; printf("%d",x.volume()); } Windows Programming, C.-S. Shieh, KUAS EC, 2005

  8. Windows Programming • Why Windows? • PCs make computers more affordable. • Graphic User Interface (GUI) of Windows make computers more user-friendly. Windows Programming, C.-S. Shieh, KUAS EC, 2005

  9. Windows Programming (cont) • Paradigms for Windows programming • Windows Application Programming Interface ( ~ machine code) • A huge collection of C functions for drawing graphic user interfaces and tracking Windows messages. • Application Framework ( ~ assembly language) • Hierarchical class library and hidden message-handling mechanism to reduce the burden of programmers. • Microsoft's Microsoft Foundation Class (MFC) • Borland's Object Windows Library (OWL) • Rapid Application Development (RAD) / Visual Programming ( ~ high-level language) • Visual components greatly simply the GUI deign. • Adopt the concept of software IC. • Microsoft's Visual BASIC in BASIC • Borland's Delphi in Object Pascal • Borland's C++ Builder in C++ Windows Programming, C.-S. Shieh, KUAS EC, 2005

  10. Windows Programming (cont) • Program execution from programmer's viewpoint • DOS programs are procedural with console I/O: Program starts execution with main(), functions (procedures) are called in turn at the will of programmers. • Windows programs are event-driven with GUI: Graphic user interface is presented, and then functions are called in response to user's action. Windows Programming, C.-S. Shieh, KUAS EC, 2005

  11. Windows Programming (cont) • Program design from programmer's viewpoint • DOS programming • declare required variables • implement procedural algorithms • Windows programming • graphic user interface design • choose visual components • set up their prosperities • implement event handlers Windows Programming, C.-S. Shieh, KUAS EC, 2005

  12. Borland C++ Builder • Borland Software Corporation at http://www.borland.com • GUI design is greatly simplified with visual drag-and-drop of components. • An excellent implementation of the idea of software IC. • Each software component has • Properties: can be set at design time or modified by code at run time to change its behavior or appearance. • Methods: callable functions for performing certain functions • Responsive events: where we implement our algorithms • Intensive on-line will help you to get acquainted with those components. • Wide variety of third-party components are available from third party, even free on the Internet. Windows Programming, C.-S. Shieh, KUAS EC, 2005

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