System.Variants.TCustomVariantType Methods

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InheritedProtected

_AddRef	protected
_Release	protected
AfterConstruction	public	Responds after the last constructor has executed.
BeforeDestruction	public	Responds before the first destructor executes.
BinaryOp	public	Implements any binary operations of which the custom Variant type is capable.
Cast	public	Converts the data from another Variant type so that it represents this custom type's data format.
CastTo	public	Converts data in the format of this TCustomVariantType to the format of another Variant type.
CastToOle	public	Converts data in the format of this custom Variant type to a format that can be used by COM Variants.
CheckDisposed	protected	This method is deprecated.
ClassInfo	public	Returns a pointer to the run-time type information (RTTI) table for the object type.
ClassName	public	Returns a string indicating the type of the object instance (as opposed to the type of the variable passed as an argument).
ClassNameIs	public	Determines whether an object is of a specific type.
ClassParent	public	Returns the type of the immediate ancestor of a class.
ClassType	public	Returns the class reference for the object's class.
CleanupInstance	public	Performs finalization on long strings, variants, and interface variables within a class.
Clear	public	Sets the data for this custom Variant type to a blank or unassigned value.
Compare	public	Implements comparisons that involve the custom Variant type.
CompareOp	public	Implements any comparison operations of which the custom Variant type is capable.
Copy	public	Copies the data from a Variant of this custom type.
Create	public	Creates an instance of TCustomVariantType.
DefaultHandler	public	Provides the interface for a method that processes message records.
Destroy	public	Frees an instance of TCustomVariantType.
Dispatch	public	Calls message-handling methods for the object, based on the contents of the Message parameter.
DispInvoke	protected	Invokes a method call when the Variant supports such operations.
DisposeOf (deprecated)	public	DisposeOf forces the execution of the destructor code in an object.
Equals	public	Checks whether the current instance and the Obj parameter are equal.
FieldAddress	public	Returns the address of a published object field.
Free	public	Destroys an object and frees its associated memory, if necessary.
FreeInstance	public	Deallocates memory allocated by a previous call to the NewInstance method.
GetDisposed	protected	Getter for the Disposed property.
GetHashCode	public	Returns an integer containing the hash code.
GetInterface	public	Retrieves a specified interface.
GetInterfaceEntry	public	Returns the entry for a specific interface implemented in a class.
GetInterfaceTable	public	Returns a pointer to a structure containing all of the interfaces implemented by a given class.
InheritsFrom	public	Determines the relationship of two object types.
InitInstance	public	Initializes a newly allocated object instance to all zeros and initializes the instance's virtual method table pointer.
InstanceSize	public	Returns the size in bytes of each instance of the object type.
IsClear	public	Indicates whether the data from a custom Variant represents a blank or unassigned value.
LeftPromotion	protected	Indicates whether the left argument to a binary operation should be coerced to a different type.
MethodAddress	public	Returns the address of a class method by name.
MethodName	public	Returns the name of a class method by address.
NewInstance	public	Allocates memory for an instance of an object type and returns a pointer to that new instance.
OlePromotion	protected	Indicates the type to which a Variant value must be cast to make it Automation-compatible.
operator ()	public
QualifiedClassName	public	Returns the qualified name of the class.
QueryInterface	protected
RaiseCastError	protected	Generates a system error that indicates an invalid cast.
RaiseDispError	protected	Generates a system error indicating an invalid dispatch attempt.
RaiseInvalidOp	protected	Generates a system error indicating an invalid operation.
RightPromotion	protected	Indicates whether the right argument to a binary operation should be coerced to a different type.
SafeCallException	public	Handles exceptions in methods declared using the safecall calling convention.
SimplisticClear	protected	Clears a TVarData record by re-initializing it.
SimplisticCopy	protected	Performs a simple block copy of one TVarData record to another.
ToString	public	Returns a string containing the class name.
UnaryOp	public	Implements any unary operations of which the custom Variant type is capable.
UnitName	public	Returns the name of the unit where the class is defined.
UnitScope	public	Returns the class's unit scope.
VarDataCast	protected	Performs a cast from one Variant type to another.
VarDataCastTo	protected	Performs a cast from one Variant type to another.
VarDataCastToOleStr	protected	Performs a cast to a Variant type of varOleStr.
VarDataClear	protected	Clears the data from a built-in Variant type.
VarDataCopy	protected	Copies the data from one built-in Variant type to another.
VarDataCopyNoInd	protected	Copies the data from one built-in Variant type to another.
VarDataFromLStr	protected
VarDataFromOleStr	protected	Creates a TVarData record to represent a WideString.
VarDataFromStr	protected	Creates a TVarData record to represent a string.
VarDataInit	protected	Initializes a TVarData record.
VarDataIsArray	protected	Indicates whether a TVarData record represents the data from a Variant array.
VarDataIsByRef	protected	Indicates whether a TVarData record stores its data indirectly.
VarDataIsEmptyParam	protected	Indicates whether a TVarData record represents an unassigned optional parameter.
VarDataIsFloat	protected	Indicates whether a TVarData record represents a floating-point value.
VarDataIsNumeric	protected	Indicates whether a TVarData record represents a numeric value.
VarDataIsOrdinal	protected	Indicates whether a TVarData record represents a ordinal value.
VarDataIsStr	protected	Indicates whether a TVarData record represents a string (normal or Unicode).
VarDataToStr	protected	Returns a string that represents the value from a TVarData record.