#include <assert.h>
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "objbase.h"
#include "ole2.h"
#include "winerror.h"
#include "winternl.h"
#include "wine/debug.h"

Include dependency graph for hglobalstream.c:

Classes
struct	handle_wrapper

struct	HGLOBALStreamImpl

Macros
#define	COBJMACROS

#define	NONAMELESSUNION

Functions
	WINE_DEFAULT_DEBUG_CHANNEL (hglobalstream)

static void	handle_addref (struct handle_wrapper *handle)

static void	handle_release (struct handle_wrapper *handle)

static ULONG	handle_read (struct handle_wrapper handle, ULONG pos, void *dest, ULONG len)

static ULONG	handle_write (struct handle_wrapper handle, ULONG pos, const void *source, ULONG len)

static HGLOBAL	handle_gethglobal (struct handle_wrapper *handle)

static HRESULT	handle_setsize (struct handle_wrapper *handle, ULONG size)

static ULONG	handle_getsize (struct handle_wrapper *handle)

static struct handle_wrapper *	handle_create (HGLOBAL hglobal, BOOL delete_on_release)

static HGLOBALStreamImpl *	impl_from_IStream (IStream *iface)

static HRESULT WINAPI	HGLOBALStreamImpl_QueryInterface (IStream iface, REFIID riid, void *ppvObject)

static ULONG WINAPI	HGLOBALStreamImpl_AddRef (IStream *iface)

static ULONG WINAPI	HGLOBALStreamImpl_Release (IStream *iface)

static HRESULT WINAPI	HGLOBALStreamImpl_Read (IStream iface, void pv, ULONG cb, ULONG *pcbRead)

static HRESULT WINAPI	HGLOBALStreamImpl_Write (IStream iface, const void pv, ULONG cb, ULONG *pcbWritten)

static HRESULT WINAPI	HGLOBALStreamImpl_Seek (IStream iface, LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER plibNewPosition)

static HRESULT WINAPI	HGLOBALStreamImpl_SetSize (IStream *iface, ULARGE_INTEGER libNewSize)

static HRESULT WINAPI	HGLOBALStreamImpl_CopyTo (IStream iface, IStream pstm, ULARGE_INTEGER cb, ULARGE_INTEGER pcbRead, ULARGE_INTEGER pcbWritten)

static HRESULT WINAPI	HGLOBALStreamImpl_Commit (IStream *iface, DWORD grfCommitFlags)

static HRESULT WINAPI	HGLOBALStreamImpl_Revert (IStream *iface)

static HRESULT WINAPI	HGLOBALStreamImpl_LockRegion (IStream *iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)

static HRESULT WINAPI	HGLOBALStreamImpl_UnlockRegion (IStream *iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType)

static HRESULT WINAPI	HGLOBALStreamImpl_Stat (IStream iface, STATSTG pstatstg, DWORD grfStatFlag)

static HGLOBALStreamImpl *	HGLOBALStreamImpl_Create (void)

static HRESULT WINAPI	HGLOBALStreamImpl_Clone (IStream iface, IStream *ppstm)

HRESULT WINAPI	CreateStreamOnHGlobal (HGLOBAL hGlobal, BOOL fDeleteOnRelease, LPSTREAM *ppstm)

HRESULT WINAPI	GetHGlobalFromStream (IStream pstm, HGLOBAL phglobal)

Variables
static const IStreamVtbl	HGLOBALStreamImplVtbl

Macro Definition Documentation

◆ COBJMACROS

#define COBJMACROS

Definition at line 31 of file hglobalstream.c.

◆ NONAMELESSUNION

#define NONAMELESSUNION

Definition at line 32 of file hglobalstream.c.

Function Documentation

◆ CreateStreamOnHGlobal()

HRESULT WINAPI CreateStreamOnHGlobal	(	HGLOBAL	hGlobal,
		BOOL	fDeleteOnRelease,
		LPSTREAM *	ppstm
	)

Definition at line 623 of file hglobalstream.c.

{
  HGLOBALStreamImpl* This;
 
  if (!ppstm)
    return E_INVALIDARG;
 
  This = HGLOBALStreamImpl_Create();
  if (!This) return E_OUTOFMEMORY;
 
  /* allocate a handle if one is not supplied */
  if (!hGlobal)
    hGlobal = GlobalAlloc(GMEM_MOVEABLE|GMEM_NODISCARD|GMEM_SHARE, 0);
 
  This->handle = handle_create(hGlobal, fDeleteOnRelease);
 
  /* start at the beginning */
  This->currentPosition.u.HighPart = 0;
  This->currentPosition.u.LowPart = 0;
 
  *ppstm = &This->IStream_iface;
 
  return S_OK;
}

Referenced by apartment_hostobject_in_hostapt(), BindStatusCallback_OnStartBinding(), bsc_OnStartBinding(), CoMarshalInterThreadInterfaceInStream(), crash_couninitialize_proc(), create_decoder(), create_doc_with_string(), create_stream(), create_stream_from_map(), create_stream_from_string(), create_stream_on_data(), create_stream_on_file(), create_stream_on_mip_ro(), create_test_stream(), D3DXSaveSurfaceToFileInMemory(), DataObjectImpl_CreateComplex(), decode_base64(), decode_qp(), doc_load_string(), get_current_dataobject(), get_data_from_stream(), get_local_server_stream(), get_stgmed_for_stream(), get_travellog_stream(), HlinkClone(), init_memstream(), CTravelEntry::Invoke(), load_image(), load_string(), LresultFromObject(), marshal_stgmed(), marshal_WdtpInterfacePointer(), METAFILE_CreateCompressedImageStream(), MimeOleCreateVirtualStream(), BrowserNavigator::navigated(), ObjectFromLresult(), OLEClipbrd_Initialize(), RECORD_StreamFromFile(), RegisterDragDrop(), RPC_GetLocalClassObject(), RunningObjectTableImpl_Register(), StdGlobalInterfaceTable_RegisterInterfaceInGlobal(), test_apm(), test_bad_marshal_stream(), test_bom(), test_bsc_marshaling(), test_bufferrawformat(), test_call_from_message(), test_channel_hook(), test_client_security(), test_CoGetStandardMarshal(), test_CoMarshalInterface(), test_componentinfo(), test_copyto(), test_CoRegisterPSClsid(), test_CoUnmarshalInterface(), test_CoWaitForMultipleHandles_thread(), test_createfromstream(), test_data_cache_save(), test_decode_1bpp(), test_decode_24bpp(), test_decode_4bpp(), test_decode_adobe_cmyk(), test_decode_rle4(), test_decode_rle8(), test_DfMarshal_custom_marshaling(), test_disconnect_stub(), test_empty_image(), test_empty_image_2(), test_enhmetafile(), test_external_connection(), test_file_moniker(), test_freed_hglobal(), test_freethreadedmarshaler(), test_GdipLoadImageFromStream(), test_getdatahere(), test_GetDataHere_Proxy(), test_handler_marshaling(), test_hresult_marshaling(), test_implicit_mta(), test_InternetSecurityMarshalling(), test_interthread_marshal_and_unmarshal(), test_Invoke(), test_IPersistStream(), test_IStream_Clone(), test_load_save_bmp(), test_load_save_emf(), test_load_save_empty_picture(), test_load_save_icon(), test_loadwmf(), test_lock_object_external(), test_marshal(), test_marshal_and_unmarshal_invalid(), test_marshal_channel_buffer(), test_marshal_dispinterface(), test_marshal_proxy_apartment_shutdown(), test_marshal_proxy_mta_apartment_shutdown(), test_marshal_stub_apartment_shutdown(), test_message_filter(), test_metafile(), test_moniker(), test_multi_encoder(), test_multiframegif(), test_mxwriter_encoding(), test_mxwriter_flush(), test_mxwriter_stream(), test_no_couninitialize_client(), test_no_couninitialize_server(), test_no_marshaler(), test_normal_marshal_and_release(), test_normal_marshal_and_unmarshal(), test_normal_marshal_and_unmarshal_twice(), test_OleDoAutoConvert(), test_persist_save_data(), test_persiststreaminit(), test_pic(), test_pointer_moniker(), test_proxy_interfaces(), test_proxy_marshal_and_unmarshal(), test_proxy_marshal_and_unmarshal2(), test_proxy_marshal_and_unmarshal_strong(), test_proxy_marshal_and_unmarshal_weak(), test_proxy_used_in_wrong_thread(), test_ReadClassStm(), test_readerinput(), test_same_apartment_unmarshal_failure(), test_save(), test_save_history(), test_save_load_filemoniker(), test_StdMarshal_custom_marshaling(), test_streamonhglobal(), test_StreamOnIStream(), test_StreamOnStreamRange(), test_supported_encoders(), test_tablestrong_marshal_and_unmarshal_twice(), test_tableweak_and_normal_marshal_and_releasedata(), test_tableweak_and_normal_marshal_and_unmarshal(), test_tableweak_marshal_and_unmarshal_twice(), test_tableweak_marshal_releasedata1(), test_tableweak_marshal_releasedata2(), test_two_tableweak_marshal_and_releasedata(), test_typelibmarshal(), test_writeroutput(), test_writestartdocument(), test_xsltemplate(), union_tests(), unmarshal_stgmed(), CTravelEntry::Update(), WdtpInterfacePointer_UserMarshal(), WdtpInterfacePointer_UserUnmarshal(), window_proc(), writer_set_output(), and xslprocessor_transform().

◆ GetHGlobalFromStream()

HRESULT WINAPI GetHGlobalFromStream	(	IStream *	pstm,
		HGLOBAL *	phglobal
	)

Definition at line 654 of file hglobalstream.c.

{
  HGLOBALStreamImpl* pStream;
 
  if (!pstm || !phglobal)
    return E_INVALIDARG;
 
  pStream = impl_from_IStream(pstm);
 
  /*
   * Verify that the stream object was created with CreateStreamOnHGlobal.
   */
  if (pStream->IStream_iface.lpVtbl == &HGLOBALStreamImplVtbl)
    *phglobal = handle_gethglobal(pStream->handle);
  else
  {
    *phglobal = 0;
    return E_INVALIDARG;
  }
 
  return S_OK;
}

Referenced by bsc_OnStopBinding(), check_iml_data(), check_output(), check_output_raw(), create_map_from_stream(), D3DXSaveSurfaceToFileInMemory(), expose_marshalled_dataobject(), RunningObjectTableImpl_Register(), stream_info(), test_bom(), test_freethreadedmarshaldata(), test_IStream_Clone(), test_moniker(), test_mxwriter_encoding(), test_omitxmldeclaration(), test_persist_save_data(), test_save(), test_writeenddocument(), test_XMLHTTP(), CTravelEntry::Update(), and xslprocessor_transform().

◆ handle_addref()

static void handle_addref ( struct handle_wrapper * handle )

static

Definition at line 55 of file hglobalstream.c.

{
    InterlockedIncrement(&handle->ref);
}

Referenced by HGLOBALStreamImpl_Clone().

◆ handle_create()

static struct handle_wrapper * handle_create	(	HGLOBAL	hglobal,
		BOOL	delete_on_release
	)

static

Definition at line 180 of file hglobalstream.c.

{
    struct handle_wrapper *handle;
 
    handle = HeapAlloc(GetProcessHeap(), 0, sizeof(*handle));
    if (handle)
    {
        handle->ref = 1;
        handle->hglobal = hglobal;
        handle->size = GlobalSize(hglobal);
        handle->delete_on_release = delete_on_release;
        InitializeCriticalSection(&handle->lock);
        handle->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": handle_wrapper.lock");
    }
    return handle;
}

Referenced by CreateStreamOnHGlobal().

◆ handle_gethglobal()

static HGLOBAL handle_gethglobal ( struct handle_wrapper * handle )

static

Definition at line 148 of file hglobalstream.c.

{
    return handle->hglobal;
}

Referenced by GetHGlobalFromStream().

◆ handle_getsize()

static ULONG handle_getsize ( struct handle_wrapper * handle )

static

Definition at line 175 of file hglobalstream.c.

{
    return handle->size;
}

Referenced by HGLOBALStreamImpl_Seek(), and HGLOBALStreamImpl_Stat().

◆ handle_read()

static ULONG handle_read	(	struct handle_wrapper *	handle,
		ULONG *	pos,
		void *	dest,
		ULONG	len
	)

static

Definition at line 78 of file hglobalstream.c.

{
    void *source;
 
    EnterCriticalSection(&handle->lock);
 
    if (*pos < handle->size)
        len = min(handle->size - *pos, len);
    else
        len = 0;
 
    source = GlobalLock(handle->hglobal);
    if (source)
    {
        memcpy(dest, (char *)source + *pos, len);
        *pos += len;
        GlobalUnlock(handle->hglobal);
    }
    else
    {
        WARN("read from invalid hglobal %p\n", handle->hglobal);
        len = 0;
    }
 
    LeaveCriticalSection(&handle->lock);
    return len;
}

Referenced by HGLOBALStreamImpl_Read().

◆ handle_release()

static void handle_release ( struct handle_wrapper * handle )

static

Definition at line 60 of file hglobalstream.c.

{
    ULONG ref = InterlockedDecrement(&handle->ref);
 
    if (!ref)
    {
        if (handle->delete_on_release)
        {
            GlobalFree(handle->hglobal);
            handle->hglobal = NULL;
        }
 
        handle->lock.DebugInfo->Spare[0] = 0;
        DeleteCriticalSection(&handle->lock);
        HeapFree(GetProcessHeap(), 0, handle);
    }
}

Referenced by HGLOBALStreamImpl_Release().

◆ handle_setsize()

static HRESULT handle_setsize	(	struct handle_wrapper *	handle,
		ULONG	size
	)

static

Definition at line 153 of file hglobalstream.c.

{
    HRESULT hr = S_OK;
 
    EnterCriticalSection(&handle->lock);
 
    if (handle->size != size)
    {
        HGLOBAL hglobal = GlobalReAlloc(handle->hglobal, size, GMEM_MOVEABLE);
        if (hglobal)
        {
            handle->hglobal = hglobal;
            handle->size = size;
        }
        else
            hr = E_OUTOFMEMORY;
    }
 
    LeaveCriticalSection(&handle->lock);
    return hr;
}

Referenced by HGLOBALStreamImpl_SetSize().

◆ handle_write()

static ULONG handle_write	(	struct handle_wrapper *	handle,
		ULONG *	pos,
		const void *	source,
		ULONG	len
	)

static

Definition at line 106 of file hglobalstream.c.

{
    void *dest;
 
    if (!len)
        return 0;
 
    EnterCriticalSection(&handle->lock);
 
    if (*pos + len > handle->size)
    {
        HGLOBAL hglobal = GlobalReAlloc(handle->hglobal, *pos + len, GMEM_MOVEABLE);
        if (hglobal)
        {
            handle->hglobal = hglobal;
            handle->size = *pos + len;
        }
        else
        {
            len = 0;
            goto done;
        }
    }
 
    dest = GlobalLock(handle->hglobal);
    if (dest)
    {
        memcpy((char *)dest + *pos, source, len);
        *pos += len;
        GlobalUnlock(handle->hglobal);
    }
    else
    {
        WARN("write to invalid hglobal %p\n", handle->hglobal);
        /* len = 0; */
    }
 
done:
    LeaveCriticalSection(&handle->lock);
    return len;
}

Referenced by HGLOBALStreamImpl_Write().

◆ HGLOBALStreamImpl_AddRef()

static ULONG WINAPI HGLOBALStreamImpl_AddRef ( IStream * iface )

static

Definition at line 246 of file hglobalstream.c.

{
  HGLOBALStreamImpl* This = impl_from_IStream(iface);
  return InterlockedIncrement(&This->ref);
}

◆ HGLOBALStreamImpl_Clone()

static HRESULT WINAPI HGLOBALStreamImpl_Clone	(	IStream *	iface,
		IStream **	ppstm
	)

static

Definition at line 574 of file hglobalstream.c.

{
  HGLOBALStreamImpl* This = impl_from_IStream(iface);
  HGLOBALStreamImpl* clone;
  ULARGE_INTEGER dummy;
  LARGE_INTEGER offset;
 
  if (!ppstm) return E_INVALIDARG;
 
  *ppstm = NULL;
 
  TRACE(" Cloning %p (seek position=%d)\n", iface, This->currentPosition.u.LowPart);
 
  clone = HGLOBALStreamImpl_Create();
  if (!clone) return E_OUTOFMEMORY;
 
  *ppstm = &clone->IStream_iface;
 
  handle_addref(This->handle);
  clone->handle = This->handle;
 
  offset.QuadPart = (LONGLONG)This->currentPosition.QuadPart;
  IStream_Seek(*ppstm, offset, STREAM_SEEK_SET, &dummy);
  return S_OK;
}

◆ HGLOBALStreamImpl_Commit()

static HRESULT WINAPI HGLOBALStreamImpl_Commit	(	IStream *	iface,
		DWORD	grfCommitFlags
	)

static

Definition at line 480 of file hglobalstream.c.

{
  return S_OK;
}

◆ HGLOBALStreamImpl_CopyTo()

static HRESULT WINAPI HGLOBALStreamImpl_CopyTo	(	IStream *	iface,
		IStream *	pstm,
		ULARGE_INTEGER	cb,
		ULARGE_INTEGER *	pcbRead,
		ULARGE_INTEGER *	pcbWritten
	)

static

Definition at line 416 of file hglobalstream.c.

{
  HRESULT        hr = S_OK;
  BYTE           tmpBuffer[128];
  ULONG          bytesRead, bytesWritten, copySize;
  ULARGE_INTEGER totalBytesRead;
  ULARGE_INTEGER totalBytesWritten;
 
  TRACE("(%p, %p, %d, %p, %p)\n", iface, pstm,
    cb.u.LowPart, pcbRead, pcbWritten);
 
  if ( pstm == 0 )
    return STG_E_INVALIDPOINTER;
 
  totalBytesRead.QuadPart = 0;
  totalBytesWritten.QuadPart = 0;
 
  while ( cb.QuadPart > 0 )
  {
    if ( cb.QuadPart >= sizeof(tmpBuffer) )
      copySize = sizeof(tmpBuffer);
    else
      copySize = cb.u.LowPart;
 
    hr = IStream_Read(iface, tmpBuffer, copySize, &bytesRead);
    if (FAILED(hr))
        break;
 
    totalBytesRead.QuadPart += bytesRead;
 
    if (bytesRead)
    {
        hr = IStream_Write(pstm, tmpBuffer, bytesRead, &bytesWritten);
        if (FAILED(hr))
            break;
 
        totalBytesWritten.QuadPart += bytesWritten;
    }
 
    if (bytesRead!=copySize)
      cb.QuadPart = 0;
    else
      cb.QuadPart -= bytesRead;
  }
 
  if (pcbRead) pcbRead->QuadPart = totalBytesRead.QuadPart;
  if (pcbWritten) pcbWritten->QuadPart = totalBytesWritten.QuadPart;
 
  return hr;
}

◆ HGLOBALStreamImpl_Create()

static HGLOBALStreamImpl * HGLOBALStreamImpl_Create ( void )

static

Definition at line 561 of file hglobalstream.c.

{
    HGLOBALStreamImpl *This;
 
    This = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
    if (This)
    {
        This->IStream_iface.lpVtbl = &HGLOBALStreamImplVtbl;
        This->ref = 1;
    }
    return This;
}

Referenced by CreateStreamOnHGlobal(), and HGLOBALStreamImpl_Clone().

◆ HGLOBALStreamImpl_LockRegion()

static HRESULT WINAPI HGLOBALStreamImpl_LockRegion	(	IStream *	iface,
		ULARGE_INTEGER	libOffset,
		ULARGE_INTEGER	cb,
		DWORD	dwLockType
	)

static

Definition at line 509 of file hglobalstream.c.

{
  return STG_E_INVALIDFUNCTION;
}

◆ HGLOBALStreamImpl_QueryInterface()

static HRESULT WINAPI HGLOBALStreamImpl_QueryInterface	(	IStream *	iface,
		REFIID	riid,
		void **	ppvObject
	)

static

Definition at line 219 of file hglobalstream.c.

{
  HGLOBALStreamImpl* This = impl_from_IStream(iface);
 
  if (ppvObject==0)
    return E_INVALIDARG;
 
  *ppvObject = 0;
 
  if (IsEqualIID(&IID_IUnknown, riid) ||
      IsEqualIID(&IID_ISequentialStream, riid) ||
      IsEqualIID(&IID_IStream, riid))
  {
    *ppvObject = &This->IStream_iface;
  }
 
  if ((*ppvObject)==0)
    return E_NOINTERFACE;
 
  IStream_AddRef(iface);
 
  return S_OK;
}

◆ HGLOBALStreamImpl_Read()

static HRESULT WINAPI HGLOBALStreamImpl_Read	(	IStream *	iface,
		void *	pv,
		ULONG	cb,
		ULONG *	pcbRead
	)

static

Definition at line 276 of file hglobalstream.c.

{
  HGLOBALStreamImpl* This = impl_from_IStream(iface);
  ULONG num_bytes;
 
  TRACE("(%p, %p, %d, %p)\n", iface, pv, cb, pcbRead);
 
  num_bytes = handle_read(This->handle, &This->currentPosition.u.LowPart, pv, cb);
  if (pcbRead) *pcbRead = num_bytes;
 
  return S_OK;
}

◆ HGLOBALStreamImpl_Release()

static ULONG WINAPI HGLOBALStreamImpl_Release ( IStream * iface )

static

Definition at line 252 of file hglobalstream.c.

{
  HGLOBALStreamImpl* This= impl_from_IStream(iface);
  ULONG ref = InterlockedDecrement(&This->ref);
 
  if (!ref)
  {
    handle_release(This->handle);
    HeapFree(GetProcessHeap(), 0, This);
  }
 
  return ref;
}

◆ HGLOBALStreamImpl_Revert()

static HRESULT WINAPI HGLOBALStreamImpl_Revert ( IStream * iface )

static

Definition at line 495 of file hglobalstream.c.

{
  return S_OK;
}

◆ HGLOBALStreamImpl_Seek()

static HRESULT WINAPI HGLOBALStreamImpl_Seek	(	IStream *	iface,
		LARGE_INTEGER	dlibMove,
		DWORD	dwOrigin,
		ULARGE_INTEGER *	plibNewPosition
	)

static

Definition at line 328 of file hglobalstream.c.

{
  HGLOBALStreamImpl* This = impl_from_IStream(iface);
 
  ULARGE_INTEGER newPosition = This->currentPosition;
  HRESULT hr = S_OK;
 
  TRACE("(%p, %x%08x, %d, %p)\n", iface, dlibMove.u.HighPart,
    dlibMove.u.LowPart, dwOrigin, plibNewPosition);
 
  /*
   * The file pointer is moved depending on the given "function"
   * parameter.
   */
  switch (dwOrigin)
  {
    case STREAM_SEEK_SET:
      newPosition.u.HighPart = 0;
      newPosition.u.LowPart = 0;
      break;
    case STREAM_SEEK_CUR:
      break;
    case STREAM_SEEK_END:
      newPosition.QuadPart = handle_getsize(This->handle);
      break;
    default:
      hr = STG_E_SEEKERROR;
      goto end;
  }
 
  /*
   * Move the actual file pointer
   * If the file pointer ends-up after the end of the stream, the next Write operation will
   * make the file larger. This is how it is documented.
   */
  newPosition.u.HighPart = 0;
  newPosition.u.LowPart += dlibMove.QuadPart;
 
  if (dlibMove.u.LowPart >= 0x80000000 &&
      newPosition.u.LowPart >= dlibMove.u.LowPart)
  {
    /* We tried to seek backwards and went past the start. */
    hr = STG_E_SEEKERROR;
    goto end;
  }
 
  This->currentPosition = newPosition;
 
end:
  if (plibNewPosition) *plibNewPosition = This->currentPosition;
 
  return hr;
}

◆ HGLOBALStreamImpl_SetSize()

static HRESULT WINAPI HGLOBALStreamImpl_SetSize	(	IStream *	iface,
		ULARGE_INTEGER	libNewSize
	)

static

Definition at line 395 of file hglobalstream.c.

{
  HGLOBALStreamImpl* This = impl_from_IStream(iface);
 
  TRACE("(%p, %d)\n", iface, libNewSize.u.LowPart);
 
  /*
   * HighPart is ignored as shown in tests
   */
  return handle_setsize(This->handle, libNewSize.u.LowPart);
}

◆ HGLOBALStreamImpl_Stat()

static HRESULT WINAPI HGLOBALStreamImpl_Stat	(	IStream *	iface,
		STATSTG *	pstatstg,
		DWORD	grfStatFlag
	)

static

Definition at line 543 of file hglobalstream.c.

{
  HGLOBALStreamImpl* This = impl_from_IStream(iface);
 
  memset(pstatstg, 0, sizeof(STATSTG));
 
  pstatstg->pwcsName = NULL;
  pstatstg->type     = STGTY_STREAM;
  pstatstg->cbSize.QuadPart = handle_getsize(This->handle);
 
  return S_OK;
}

◆ HGLOBALStreamImpl_UnlockRegion()

static HRESULT WINAPI HGLOBALStreamImpl_UnlockRegion	(	IStream *	iface,
		ULARGE_INTEGER	libOffset,
		ULARGE_INTEGER	cb,
		DWORD	dwLockType
	)

static

Definition at line 526 of file hglobalstream.c.

{
  return S_OK;
}

◆ HGLOBALStreamImpl_Write()

static HRESULT WINAPI HGLOBALStreamImpl_Write	(	IStream *	iface,
		const void *	pv,
		ULONG	cb,
		ULONG *	pcbWritten
	)

static

Definition at line 303 of file hglobalstream.c.

{
  HGLOBALStreamImpl* This = impl_from_IStream(iface);
  ULONG num_bytes;
 
  TRACE("(%p, %p, %d, %p)\n", iface, pv, cb, pcbWritten);
 
  num_bytes = handle_write(This->handle, &This->currentPosition.u.LowPart, pv, cb);
  if (pcbWritten) *pcbWritten = num_bytes;
 
  return (num_bytes < cb) ? E_OUTOFMEMORY : S_OK;
}

◆ impl_from_IStream()

static HGLOBALStreamImpl * impl_from_IStream ( IStream * iface )

inlinestatic

Definition at line 214 of file hglobalstream.c.

{
  return CONTAINING_RECORD(iface, HGLOBALStreamImpl, IStream_iface);
}

Referenced by GetHGlobalFromStream(), HGLOBALStreamImpl_AddRef(), HGLOBALStreamImpl_Clone(), HGLOBALStreamImpl_QueryInterface(), HGLOBALStreamImpl_Read(), HGLOBALStreamImpl_Release(), HGLOBALStreamImpl_Seek(), HGLOBALStreamImpl_SetSize(), HGLOBALStreamImpl_Stat(), and HGLOBALStreamImpl_Write().

◆ WINE_DEFAULT_DEBUG_CHANNEL()

WINE_DEFAULT_DEBUG_CHANNEL ( hglobalstream )

Variable Documentation

◆ HGLOBALStreamImplVtbl

static const IStreamVtbl HGLOBALStreamImplVtbl

static

Initial value:

=
{
    HGLOBALStreamImpl_QueryInterface,
    HGLOBALStreamImpl_AddRef,
    HGLOBALStreamImpl_Release,
    HGLOBALStreamImpl_Read,
    HGLOBALStreamImpl_Write,
    HGLOBALStreamImpl_Seek,
    HGLOBALStreamImpl_SetSize,
    HGLOBALStreamImpl_CopyTo,
    HGLOBALStreamImpl_Commit,
    HGLOBALStreamImpl_Revert,
    HGLOBALStreamImpl_LockRegion,
    HGLOBALStreamImpl_UnlockRegion,
    HGLOBALStreamImpl_Stat,
    HGLOBALStreamImpl_Clone
}

Definition at line 559 of file hglobalstream.c.

Referenced by GetHGlobalFromStream(), and HGLOBALStreamImpl_Create().

Classes

Macros

Functions

Variables

Macro Definition Documentation

◆ COBJMACROS

◆ NONAMELESSUNION

Function Documentation

◆ CreateStreamOnHGlobal()

◆ GetHGlobalFromStream()

◆ handle_addref()

◆ handle_create()

◆ handle_gethglobal()

◆ handle_getsize()

◆ handle_read()

◆ handle_release()

◆ handle_setsize()

◆ handle_write()

◆ HGLOBALStreamImpl_AddRef()

◆ HGLOBALStreamImpl_Clone()

◆ HGLOBALStreamImpl_Commit()

◆ HGLOBALStreamImpl_CopyTo()

◆ HGLOBALStreamImpl_Create()

◆ HGLOBALStreamImpl_LockRegion()

◆ HGLOBALStreamImpl_QueryInterface()

◆ HGLOBALStreamImpl_Read()

◆ HGLOBALStreamImpl_Release()

◆ HGLOBALStreamImpl_Revert()

◆ HGLOBALStreamImpl_Seek()

◆ HGLOBALStreamImpl_SetSize()

◆ HGLOBALStreamImpl_Stat()

◆ HGLOBALStreamImpl_UnlockRegion()

◆ HGLOBALStreamImpl_Write()

◆ impl_from_IStream()

◆ WINE_DEFAULT_DEBUG_CHANNEL()

Variable Documentation

◆ HGLOBALStreamImplVtbl