vxstream.idl

vxworks操作系统的源代码 供研究学习

/* Stream.idl - definition of IStream etc. */

/* Copyright (c) 2000, Wind River Systems, Inc. */

/*
modification history
--------------------
01b,20jun01,nel  Change WindTypes.h to comCoreTypes.h
01a,10feb00,dbs  created from vxidl.idl
*/

import "comCoreTypes.idl";

[
    local,
    object,
    uuid(0c733a30-2a1c-11ce-ade5-00aa0044773d),
    pointer_default(unique)
]
interface ISequentialStream : IUnknown
    {
    HRESULT Read
	(
        [out, size_is(cb), length_is(*pcbRead)] void *pv,
        [in] ULONG cb,
        [out] ULONG *pcbRead
	);

    HRESULT Write
	(
        [in, size_is(cb)] const void *pv,
        [in] ULONG cb,
        [out] ULONG *pcbWritten
	);
    }


[
    local,
    object,
    uuid(0000000c-0000-0000-C000-000000000046),
    pointer_default(unique)
]

interface IStream : ISequentialStream
    {

    typedef [unique] IStream *LPSTREAM;

    typedef struct tagSTATSTG
	{
        LPOLESTR pwcsName;
        DWORD type;
        ULARGE_INTEGER cbSize;
        FILETIME mtime;
        FILETIME ctime;
        FILETIME atime;
        DWORD grfMode;
        DWORD grfLocksSupported;
        CLSID clsid;
        DWORD grfStateBits;
        DWORD reserved;
	} STATSTG;

    typedef enum tagSTGTY
	{
	STGTY_STORAGE   = 1,
        STGTY_STREAM    = 2,
        STGTY_LOCKBYTES = 3,
        STGTY_PROPERTY  = 4
	} STGTY;

    typedef enum tagSTREAM_SEEK
	{
        STREAM_SEEK_SET = 0,
        STREAM_SEEK_CUR = 1,
        STREAM_SEEK_END = 2
	} STREAM_SEEK;

    typedef enum tagLOCKTYPE
	{
        LOCK_WRITE      = 1,
        LOCK_EXCLUSIVE  = 2,
        LOCK_ONLYONCE   = 4
	} LOCKTYPE;

    HRESULT Seek
	(
        [in] LARGE_INTEGER dlibMove,
        [in] DWORD dwOrigin,
        [out] ULARGE_INTEGER *plibNewPosition
	);

    HRESULT SetSize ([in] ULARGE_INTEGER libNewSize);

    HRESULT CopyTo
	(
        [in, unique] IStream *pstm,
        [in] ULARGE_INTEGER cb,
        [out] ULARGE_INTEGER *pcbRead,
        [out] ULARGE_INTEGER *pcbWritten
	);

    HRESULT Commit ([in] DWORD grfCommitFlags);

    HRESULT Revert ();

    HRESULT LockRegion
	(
        [in] ULARGE_INTEGER libOffset,
        [in] ULARGE_INTEGER cb,
        [in] DWORD dwLockType
	);

    HRESULT UnlockRegion
	(
        [in] ULARGE_INTEGER libOffset,
        [in] ULARGE_INTEGER cb,
        [in] DWORD dwLockType
	);

    HRESULT Stat
	(
        [out] STATSTG *pstatstg,
        [in] DWORD grfStatFlag
	);

    HRESULT Clone([out] IStream **ppstm);

    }