LockRegion method

Project: Stream Extension Classes

Unit: PJIStreams

Classes: TPJIStreamWrapper, TPJHandleIStreamWrapper, TPJFileIStream

Applies to: ~>3.0

function LockRegion(libOffset: Largeint; cb: Largeint;
  dwLockType: Longint): HResult; virtual; stdcall;

Description

Method not supported.

This method may restrict access to a specified range of bytes in the stream. It is optional whether support is provided for this method – this implementation does not do so. A stub is provided in accordance with the Microsoft documentation.

Parameters:

• libOffset – Byte offset of the beginning of the range to be restricted. Ignored.
• cb – Length of the range to be restricted in bytes. Ignored.
• dwLockType – Restrictions being requested on accessing the range. Valid values are from the LOCKTYPE. Ignored.

Returns:

• STG_E_INVALIDFUNCTION in all cases.