TNullStream class

Declaration

Inheritance

1. TNullStream
2. THandleStream
3. TStream
4. TObject

Description

TNullStream discards any data written to it (but keeps a virtual size) and returns 0 bytes when read from. It emulates a TMemoryStream: When writing to the stream, the size is increased as needed. When reading, the maximum number of returned bytes is limited to the size of the stream.

See also

• Read
• Write
• Size

Methods

GetSize	protected	Return the size of the stream.
SetSize	protected
GetPosition	protected
InvalidSeek	protected
Read	public	Read null bytes from the stream.
Write	public	Write to stream.
Seek	public	Set current position in the stream.
Create	public	Create a new instance.

Inherited

From THandleStream (1)

Handle

From TObject (41)

AfterConstruction BeforeDestruction CheckDisposed ClassInfo ClassName ClassNameIs ClassParent ClassType CleanupInstance DefaultHandler DefaultHandlerStr Destroy Dispatch DispatchStr Disposed DisposeOf Equals FieldAddress Free FreeInstance GetDisposed GetHashCode GetInterface GetInterfaceByStr GetInterfaceEntry GetInterfaceEntryByStr GetInterfaceTable GetInterfaceWeak GetLastCastErrorInfo InheritsFrom InitInstance InstanceSize MethodAddress MethodName newinstance QualifiedClassName SafeCallException StringMessageTable SystemHasExtendedRTTI ToString UnitName