做为linux下图形用户界面支持系统之一的MicroWindows采用C++设计

				//
				// Micro Windows Implementation
				// object.h: the base class of all other classes
				//
				// $DESC$
				// This is the revised "root" for the Micro Windows class hierarchy.
				// Object class was renamed to MWObject, while you can still use the
				// originally if _MW_OBJECTCLASS is defined (default is yes.)
				//
				// This revision allows you working with other class hierarchies,
				// such as Borland OWL or Microsoft Foundation class.
				// $ENDDESC$
				// $CHNDESC$
				// Object class, 所有其他的 class 皆繼承自此 class.
				// 值得注意的是這裡用到了 virtual destructor .
				// $ENDDESC$
				//
				// $Revision: 1.2 $
				// $Source: P:/MWINDOWS/INCLUDE/rcs/object.h $
				// $Date: 1994/01/08 18:09:37 $
				//
				
				#ifndef __object_h
				#define __object_h
				
				#ifndef __stdhead_h
				#   include "stdhead.h"
				#endif
				
				
				#define _MW_OBJECTCLASS
				
				#ifndef _MW_OBJECTROOT
				#   define _MW_OBJECTBASE
				#else
				#   define _MW_OBJECTBASE  : public _MW_OBJECTROOT
				#endif     
				
				class MWObject  _MW_OBJECTBASE
				{               
				public:
				    virtual ~MWObject ()  {}
				};
				
				#ifdef _MW_OBJECTCLASS
				    typedef MWObject    Object;
				#endif
				
				#ifdef _MW_OBJECTDEBUG
				    void *operator new (size_t s);
				    void operator delete (void *ptr);
				#endif
				
				#endif