1. Windows Development
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2. Dynadata Software Development with MFC Library
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3. Windows environment (SDK) I
USER - KERNEL -GDI
The Device Independent Graphics Interface (GDI philosophy)
The window class
The window creation
The window styles
The extended window style
The client & non client area
The message loop
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4. Windows environment (SDK) II
The windows procedure
Subclassing
The messages WM_CREATE, WM_PAINT & WM_DESTROY
Sending & posting messages
Intercepting messages
Single Document Interface & Multiple Document Interface
Fixed & moveable segments
System resources
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5. Windows 98 Core System Components
User
Interface
tools
Applications
Registry
32 – bit shell
Windows 98 core
VMM
IFS
manager
Configuration
manager
WDM driver manager
Windows 98 core
Device drivers
VMM - Virtual Memory Manager. Windows NT provides an independent, 2 gigabyte (GB) user address space for each application (process) in the system.
IFS -The Installable File System Manager arbitrates access to file system devices, and other file system device components.
CM -The Configuration Manager ensures that each device on the computer can use an interrupt request (IRQ), I/O port addresses, and other resources without conflict with other devices.
WDM - The Win32 Driver Model defines a device-driver architecture that provides a common set of I/O services understood by both Windows 98 and future versions of Windows NT.
USER
GDI
Kernel
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6. USER
USER.EXE: The USER component manages input from the keyboard, mouse, and other input devices and output to the user interface (windows, icons, menus, and so on).
It also manages interaction with the sound driver, timer, and communications ports. Windows 95 permits up to 16,364 window handles and 16,364 menu handles. Although these limits are less than under Windows NT, they are significantly greater than the limits imposed by Windows 3.1.
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7. KERNEL
KERNEL.EXE: The KERNEL provides base operating system functionality, including file I/O services, virtual memory management, and task scheduling.
When a user wants to start an application, the Kernel loads the EXE and DLL files for the application.
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8. GDI
GDI.EXE (graphics device interface). Graphics device interface (GDI) provides functions and related structures that your applications can use to generate graphical output for displays, printers, and other devices.
Using GDI functions, you can draw lines, curves, closed figures, paths, text, and bitmapped images.
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9. The Device Independent Graphics Interface (GDI philosophy)
GDI is the intermediary support between a Windows graphics driver and applications.
Applications call Win32 GDI functions to make graphics output requests. These requests are routed to GDI. GDI then sends these requests to the appropriate graphics driver, such as a display driver or printer driver. GDI communicates with the graphics driver through a set of DDI functions.
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10. Graphics Driver and GDI Interaction
Application
Graphics requests
GDI32
User Mode
Kernel Mode
Graphics Engine
( GDI )
DDI calls
GDI calls
Graphics Driver
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