WINDOWS PROGRAMMING MODEL

Ø Event driven programming mechanism.

Ø It responds to messages by processing messages send by OS.

Ø Events may be keystrokes, mouse click etc.

Ø WinMain() is the entry point to windows program. It creates the window and retrieves and dispatch the messages to appropriate window procedure.

Features:

Ø Message Processing:Every Window Prog. Must have WinMain() whose main task is to create the applications main window. MS-DOS based prog. Calls OS to get User input, but windows based prog processes user input via msg from OS. Common messages are WM_CREATE, WM_LBUTTONDOWN, WM_COMMAND(in response of user menu choice). 

Ø GDI Support:

Ø Resource Based Programming:Resource files can include bitmaps, icons, menu definition, dialog box layouts etc. Linker combines these binary resource files with the c++ compiler’s output to generate executable prog. Resource editor & Resource compiler are used for programming.

Ø Memory Management:

Ø DLL Support:

Ø Win32 API:

Ø Plug and Play Facility:

Ø GUI Support:

Ø Support Distributed Processing:

Ø Remote Access Through Multithreading