OLEStream object

The OLEStream object acts as a proxy for an OLE stream.

You can customize your own version of the OLEStream object
by defining a class user object inherited from the built-in OLEStream
object.

For more information about creating a custom OLEStream object,
see the chapter on user objects in the PowerBuilder Users
Guide.

For more information about using the OLEStream
object in an application, see Application Techniques.

OLEStream property	Datatype	Description
ClassDefinition	PowerObject	An object of type PowerObject containing information about the class definition of the object or control.
Name	String	Specifies the member name of the stream within its parent storage.
Storage	OMStorage	(Read-only) Specifies the storage containing the stream. Streams are always opened from within an OLEStorage object.

OLEStream event	Occurs
Constructor	When the user object is created.
Destructor	When the user object is destroyed.

OLEStream function	Datatype returned	Description
ClassName	String	Returns the name assigned to the user object.
Close	Integer	Releases any stream previously opened.
GetContextService	Integer	Creates a reference to a context-specific instance of the specified service.
GetParent	PowerObject	Returns a reference to the name of the parent object.
Length	Integer	Obtains the length of the open stream.
Open	Integer	Opens the specified stream from the storage.
PostEvent	Boolean	Adds an event to the end of the message queue of the user object.
Read	Integer	Reads from the stream.
Seek	Integer	Moves within the stream.
TriggerEvent	Integer	Sends an event to the user object and executes the script associated with the event.
TypeOf	Object	Returns the type of the user object.
Write	Long	Writes to the stream.

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Powerbuilder Documentation 12.5

August 9, 2023

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