TFieldDefs Members

The following tables list the members exposed by TFieldDefs.

	Name	Description
	OnUpdate	This is OnUpdate, a member of class TDefCollection.

Protected Methods

	Name	Description
	Added	Responds when items are added to the collection.
	AssignTo	Copies the properties of an object to a destination object.
	Changed	Responds when the collection or any of its items changes.
	ChildDefUpdate	This is ChildDefUpdate, a member of class TFieldDefs.
	DefineProperties	Provides an interface for a method that reads and writes otherwise unpublished data.
	Deleting	Responds when items are deleted from the collection.
	DoUpdate	This is DoUpdate, a member of class TDefCollection.
	FieldDefUpdate	This is FieldDefUpdate, a member of class TFieldDefs.
	GetAttr	Returns the name of a custom attribute that can be retrieved using the GetItemAttr method.
	GetAttrCount	Returns the number of custom attributes associated with items in the collection.
	GetItem	Returns a specified item in the collection.
	GetItemAttr	Returns the value of a custom attribute assigned to one of the collection's items.
	GetOwner	Returns the owner of an object.
	GetOwner	Returns the owner of an object.
	Notify	Responds when items are added to or removed from the collection.
	SetItem	Copies the properties of another item to a specified item in the collection.
	SetItemName	Initializes the name of a newly inserted collection item.
	UpdateDefs	This is UpdateDefs, a member of class TDefCollection.

Protected Properties

	Name	Description
	NextID	Specifies a unique ID that can be assigned to the next added collection item.
	PropName	Specifies the name of the property that the collection implements.
	UpdateCount	Counts the number of times BeginUpdate was called without a corresponding call to EndUpdate.

Public Methods

	Name	Description
	Add	Creates a new field definition object and adds it to the Items property.
	AddFieldDef	Creates a new field definition object and adds it to the Items property of this TFieldDefs object.
	AfterConstruction	Responds after the last constructor has executed.
	Assign	Copies the contents of another collection to the object where the method is executed.
	Assign	Copies the contents of another, similar object.
	BeforeDestruction	Responds before the first destructor executes.
	BeginUpdate	Suspends screen repainting.
	ClassInfo	Returns a pointer to the runtime type information (RTTI) table for the object type.
	ClassName	Returns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
	ClassNameIs	Determines whether an object is of a specific type.
	ClassParent	Returns the type of the immediate ancestor of a class.
	ClassType	Returns the class reference for the object's class.
	CleanupInstance	Performs finalization on long strings, variants, and interface variables within a class.
	Clear	Deletes all items from the collection.
	Create	Creates an instance of TFieldDefs.
	DefaultHandler	Provides the interface for a method that processes message records.
	Delete	Deletes a single item from the collection.
	Destroy	Destroys the collection and each item in it.
	Destroy	Destroys the TPersistent instance and frees its memory.
	Destroy	Disposes of an object instance.
	Dispatch	Calls message-handling methods for the object, based on the contents of the Message parameter.
	EndUpdate	Re-enables screen repainting.
	FieldAddress	Returns the address of a published object field.
	Find	Returns a field definition, given the name of the field.
	FindItemID	Returns the item with the specified ID.
	Free	Destroys an object and frees its associated memory, if necessary.
	FreeInstance	Deallocates memory allocated by a previous call to the System::TObject::NewInstance method.
	GetEnumerator	Returns a TCollection enumerator.
	GetInterface	Retrieves a specified interface.
	GetInterfaceEntry	Returns the entry for a specific interface implemented in a class.
	GetInterfaceTable	Returns a pointer to a structure containing all of the interfaces implemented by a given class.
	GetItemNames	This is the overview for the GetItemNames method overload.
	GetNamePath	Returns a string used by the Object Inspector.
	GetNamePath	Returns the name of the object as it appears in the Object Inspector.
	IndexOf	Finds the index number of a definition in the Items array from its name.
	InheritsFrom	Determines the relationship of two object types.
	InitInstance	Initializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.
	Insert	Creates a new TCollectionItem instance and adds it to the Items array.
	InstanceSize	Returns the size in bytes of each instance of the object type.
	MethodAddress	This is MethodAddress, a member of class TObject.
	MethodName	This is MethodName, a member of class TObject.
	NewInstance	Allocates memory for an instance of an object type and returns a pointer to that new instance.
	Owner	Returns the Owner of the collection.
	SafeCallException	Handles exceptions in methods declared using the safecall calling convention.
	Update	Refreshes the field definitions in the Items property array to reflect the current state of the physical fields underlying the dataset.

Public Properties

	Name	Description
	Capacity	Provides access to the internal TList Capacity property.
	Count	Returns the number of items in the collection.
	DataSet	Indicates the dataset that uses the TDefCollection object to manage its definition objects.
	HiddenFields	Determines whether to show the extra hidden columns that may be included to ensure unique records.
	ItemClass	Indicates the class to which the collection's items belong.
	Items	Lists the field definitions that describe each physical field in the dataset.
	ParentDef	References the field definition of the parent field, if there is one.
	Updated	Indicates whether the definition objects in the Items array match the corresponding instantiated objects in the dataset.

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