TParameter Members

The following tables list the members exposed by TParameter.

	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	DefineProperties	Provides an interface for a method that reads and writes otherwise unpublished data.
	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.
	IsEqual	This is IsEqual, a member of class TParameter.
	SetCollection	Sets the value of the Collection property.
	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
	AfterConstruction	Responds after the last constructor has executed.
	AppendChunk	Adds data to a parameter.
	Assign	Copies the properties and value of one TParameter object 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 TCollectionItem instance.
	Create	Constructs an object and initializes its data before the object is first used.
	DefaultHandler	Provides the interface for a method that processes message records.
	Destroy	Destroys the TCollectionItem instance and frees its memory.
	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.
	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.
	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.
	LoadFromFile	Loads the value of a parameter from a file.
	LoadFromStream	Loads the value of a parameter from a memory stream.
	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.
	ID	A unique, permanent index for the item.
	Index	Returns the item's position in the Items array of TCollection.
	ParameterObject	Provides direct access to the ADO Parameter object.
	Parameters	Provides a reference to the TParameters container.
	Properties	Provides read-only access to the Properties property of the ADO Parameter object.

Published Properties

	Name	Description
	Attributes	Specifies the attributes of a parameter.
	DataType	Indicates the type of value the parameter represents.
	Direction	Indicates the type of parameter.
	Name	Identifies the TParameter object.
	NumericScale	Specifies the number of decimal places for the parameter.
	Precision	Specifies the number of digits allowed for a numeric parameter.
	Size	Specifies the size of a string type parameter.
	Value	Represents the value of the parameter as a Variant.

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