CObject Class

Artikel
04/28/2015

The principal base class for the Microsoft Foundation Class Library.

class AFX_NOVTABLE CObject

Members

Protected Constructors

Name	Description
CObject::CObject	Default constructor.

Public Methods

Name	Description
CObject::AssertValid	Validates this object's integrity.
CObject::Dump	Produces a diagnostic dump of this object.
CObject::GetRuntimeClass	Returns the CRuntimeClass structure corresponding to this object's class.
CObject::IsKindOf	Tests this object's relationship to a given class.
CObject::IsSerializable	Tests to see whether this object can be serialized.
CObject::Serialize	Loads or stores an object from/to an archive.

Public Operators

Name	Description
CObject::operator delete	Special delete operator.
CObject::operator new	Special new operator.

Remarks

It serves as the root not only for library classes such as CFile and CObList, but also for the classes that you write. CObject provides basic services, including

Serialization support
Run-time class information
Object diagnostic output
Compatibility with collection classes

Note that CObject does not support multiple inheritance. Your derived classes can have only one CObject base class, and that CObject must be leftmost in the hierarchy. It is permissible, however, to have structures and non-CObject-derived classes in right-hand multiple-inheritance branches.

You will realize major benefits from CObject derivation if you use some of the optional macros in your class implementation and declarations.

The first-level macros, DECLARE_DYNAMIC and IMPLEMENT_DYNAMIC, permit run-time access to the class name and its position in the hierarchy. This, in turn, allows meaningful diagnostic dumping.

The second-level macros, DECLARE_SERIAL and IMPLEMENT_SERIAL, include all the functionality of the first-level macros, and they enable an object to be "serialized" to and from an "archive."

For information about deriving Microsoft Foundation classes and C++ classes in general and using CObject, see Using CObject and Serialization.

Inheritance Hierarchy

CObject

Requirements

Header: afx.h

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