TFieldDef Members

The following tables list the members exposed by TFieldDef.

	Name	Description
	AssignTo	Copies the properties of an object to a destination object.
	Changed	Updates the collection to reflect changes to the collection item.
	DefineProperties	Provides an interface for a method that reads and writes otherwise unpublished data.
	GetChildDefsClass	This is GetChildDefsClass, a member of class TFieldDef.
	GetDisplayName	Returns the name of the collection item as it appears in the collection editor.
	GetDisplayName	Returns the name of the collection item as it appears in the collection editor.
	GetOwner	Returns the collection to which this item belongs.
	GetOwner	Returns the owner of an object.
	SetCollection	Sets the value of the Collection property.
	SetDisplayName	Sets the name of the collection item as it appears in the collection editor.
	SetDisplayName	Sets the name of the collection item as it appears in the collection editor.
	SetIndex	Moves the collection item to a specified position in the parent collection.

Public Methods

	Name	Description
	AddChild	Adds a new TFieldDef object to the ChildDefs array.
	AfterConstruction	Responds after the last constructor has executed.
	Assign	Copies the properties of one field definition to another.
	BeforeDestruction	Responds before the first destructor executes.
	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.
	Create	Creates and initializes a TFieldDef instance.
	CreateField	Creates a TField component that matches the specifications of the TFieldDef object.
	DefaultHandler	Provides the interface for a method that processes message records.
	Destroy	Destroys the TFieldDef instance and frees its memory.
	Dispatch	Calls message-handling methods for the object, based on the contents of the Message parameter.
	Equals	Checks if the current instance and the parameter are equal.
	FieldAddress	This is the overview for the FieldAddress method overload.
	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.
	GetHashCode	Returns an integer containing the hash code.
	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.
	GetNamePath	Returns a string used by the Object Inspector.
	GetNamePath	Returns the name of the object as it appears in the Object Inspector.
	HasChildDefs	Indicates whether the field of the TFieldDef object has any child field definitions.
	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.
	InstanceSize	Returns the size in bytes of each instance of the object type.
	MethodAddress	This is the overview for the MethodAddress method overload.
	MethodName	Returns the name of a class method by address.
	NewInstance	Allocates memory for an instance of an object type and returns a pointer to that new instance.
	SafeCallException	Handles exceptions in methods declared using the safecall calling convention.
	ToString	Returns a string containing the class name.
	UnitName	Returns a string containing the unit name.

Public Properties

	Name	Description
	Collection	Specifies the TCollection instance to which the TCollectionItem belongs.
	DisplayName	The name displayed in the Collection editor.
	FieldClass	Determines the class of the field object that corresponds to this field definition object.
	FieldNo	Identifies the physical field number used to reference the field.
	ID	A unique, permanent index for the item.
	Index	Returns the item's position in the Items array of TCollection.
	InternalCalcField	Determines if the field is calculated by the underlying database.
	ParentDef	The ParentDef property references the parent field definition for the field definition, if it exists.
	Required	Indicates whether a value for the physical field in the underlying table is required.

Published Properties

	Name	Description
	Attributes	Identifies attributes of the field associated with the field def.
	ChildDefs	Specifies the TFieldDefs object that contains an array of child fields.
	DataType	Determines the type of a physical field.
	Name	Specifies the name of the database entity defined by the TNamedItem object.
	Precision	Specifies the number of digits of accuracy used to store the field value.
	Size	Reports the size associated with the field in the physical database table.

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