HVAC Control in the New Millennium.pdf - HVAC.Amickracing

PC-based Control, Software and Bus Trends32-bit, Windows-based applications. Another programming interfaceavailable to Win32 and Microsoft Visual C++ programmers is the MicrosoftFoundation Class library (MFC). MFC provides higher-level encapsulationsfor much of the Win32 API.MFC supplies C++ classes to represent Windows user interfaceobjects such as windows, dialog boxes, brushes, pens, and fonts. MFCclass member functions make calls to the Win32 API functions. Theprogrammer using Win32 can program using C or C++ and the Win32API, or using C++ and MFC.Windows CEWindows CE is not just a reduced-feature-set version of Windows.It was developed as a small-footprint OS for embedded applications. Itskernel borrows from other Microsoft 32-bit OSs and eliminates or replacesthose OS characteristics that typical CE-based applications do notrequire. See Figure 5-1.Windows CE applications, like Windows NT applications, run in aFigure 5-1. Windows CE architecture with an OEM abstraction layer(OAL) for device-dependent code and device power management.©2001 by The Fairmont Press, Inc. All rights reserved.