TCustomVariantType Members

The following tables list the members exposed by TCustomVariantType.

	Name	Description
	_AddRef	Increments the reference count for this interface.
	_Release	Decrements the reference count for this interface.
	DispInvoke	Invokes a method call when the Variant supports such operations.
	LeftPromotion	Indicates whether the left argument to a binary operation should be coerced to a different type.
	OlePromotion	Indicates the type to which a Variant value must be cast to make it Automation-compatible.
	QueryInterface	Returns a reference to a specified interface if the object supports that interface.
	RaiseCastError	Generates a system error that indicates an invalid cast.
	RaiseDispError	Generates a system error indicating an invalid dispatch attempt.
	RaiseInvalidOp	Generates a system error indicating an invalid operation.
	RightPromotion	Indicates whether the right argument to a binary operation should be coerced to a different type.
	SimplisticClear	Clears a TVarData record by re-initializing it.
	SimplisticCopy	Performs a simple block copy of one TVarData record to another.
	VarDataCast	Performs a cast from one Variant type to another.
	VarDataCastTo	This is the overview for the VarDataCastTo method overload.
	VarDataCastToOleStr	Performs a cast to a Variant type of varOleStr.
	VarDataClear	Clears the data from a built-in Variant type.
	VarDataCopy	Copies the data from one built-in Variant type to another.
	VarDataCopyNoInd	Copies the data from one built-in Variant type to another.
	VarDataFromOleStr	Creates a TVarData record to represent a Unicode string.
	VarDataFromStr	Creates a TVarData record to represent a string.
	VarDataInit	Initializes a TVarData record.
	VarDataIsArray	Indicates whether a TVarData record represents the data from a Variant array.
	VarDataIsByRef	Indicates whether a TVarData record stores its data indirectly.
	VarDataIsEmptyParam	Indicates whether a TVarData record represents an unassigned optional parameter.
	VarDataIsFloat	Indicates whether a TVarData record represents a floating-point value.
	VarDataIsNumeric	Indicates whether a TVarData record represents a numeric value.
	VarDataIsOrdinal	Indicates whether a TVarData record represents a ordinal value.
	VarDataIsStr	Indicates whether a TVarData record represents a string (normal or Unicode).
	VarDataToStr	Returns a string that represents the value from a TVarData record.

Public Methods

	Name	Description
	AfterConstruction	Responds after the last constructor has executed.
	BeforeDestruction	Responds before the first destructor executes.
	BinaryOp	Implements any binary operations of which the custom Variant type is capable.
	Cast	Converts the data from another Variant type so that it represents this custom type's data format.
	CastTo	This is CastTo, a member of class TCustomVariantType.
	CastToOle	This is CastToOle, a member of class TCustomVariantType.
	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	Sets the data for this custom Variant type to a blank or unassigned value.
	Compare	Implements comparisons that involve the custom Variant type.
	CompareOp	Implements any comparison operations of which the custom Variant type is capable.
	Copy	Copies the data from a Variant of this custom type.
	Create	This is the overview for the Create constructor overload.
	DefaultHandler	Provides the interface for a method that processes message records.
	Destroy	Frees an instance of TCustomVariantType.
	Dispatch	Calls message-handling methods for the object, based on the contents of the Message parameter.
	FieldAddress	Returns the address of a published object field.
	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.
	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.
	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.
	IsClear	Indicates whether the data from a custom Variant represents a blank or unassigned value.
	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.
	SafeCallException	Handles exceptions in methods declared using the safecall calling convention.
	UnaryOp	Implements any unary operations of which the custom Variant type is capable.

Public Properties

	Name	Description
	VarType	Indicates the Variant type code for the custom Variant type.

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