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ole32: Implement the GetData function of the data cache to using the 

existing LoadData function and fix GetData to also return data that
has been set, rather than loaded.
This commit is contained in:
Rob Shearman 2006-12-04 15:51:20 +00:00 committed by Alexandre Julliard
parent 1b244baf48
commit 878d5e9cec
1 changed files with 21 additions and 89 deletions
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110
dlls/ole32/datacache.c
View File

@ -732,6 +732,20 @@ static HRESULT DataCacheEntry_SetData(DataCacheEntry *This,
&This->stgmedium, stgmedium);
}
static HRESULT DataCacheEntry_GetData(DataCacheEntry *This,
STGMEDIUM *stgmedium)
{
if (stgmedium->tymed == TYMED_NULL && This->storage)
{
HRESULT hr = DataCacheEntry_LoadData(This);
if (FAILED(hr))
return hr;
}
if (stgmedium->tymed == TYMED_NULL)
return OLE_E_BLANK;
return copy_stg_medium(This->data_cf, stgmedium, &This->stgmedium);
}
static inline HRESULT DataCacheEntry_DiscardData(DataCacheEntry *This)
{
ReleaseStgMedium(&This->stgmedium);
@ -921,104 +935,22 @@ static ULONG WINAPI DataCache_IDataObject_Release(
*
* Get Data from a source dataobject using format pformatetcIn->cfFormat
* See Windows documentation for more details on GetData.
* TODO: Currently only CF_METAFILEPICT is implemented
*/
static HRESULT WINAPI DataCache_GetData(
IDataObject* iface,
LPFORMATETC pformatetcIn,
STGMEDIUM* pmedium)
{
HRESULT hr = 0;
HRESULT hrRet = E_UNEXPECTED;
IPersistStorage *pPersistStorage = 0;
IStorage *pStorage = 0;
IStream *pStream = 0;
OLECHAR name[]={ 2, 'O', 'l', 'e', 'P', 'r', 'e', 's', '0', '0', '0', 0};
HGLOBAL hGlobalMF = 0;
void *mfBits = 0;
PresentationDataHeader pdh;
METAFILEPICT *mfPict;
HMETAFILE hMetaFile = 0;
DataCache *This = impl_from_IDataObject(iface);
DataCacheEntry *cache_entry;
if (pformatetcIn->cfFormat == CF_METAFILEPICT)
{
/* Get the Persist Storage */
memset(pmedium, 0, sizeof(*pmedium));
hr = IDataObject_QueryInterface(iface, &IID_IPersistStorage, (void**)&pPersistStorage);
cache_entry = DataCache_GetEntryForFormatEtc(This, pformatetcIn);
if (!cache_entry)
return OLE_E_BLANK;
if (hr != S_OK)
goto cleanup;
/* Create a doc file to copy the doc to a storage */
hr = StgCreateDocfile(NULL, STGM_CREATE | STGM_READWRITE | STGM_SHARE_EXCLUSIVE, 0, &pStorage);
if (hr != S_OK)
goto cleanup;
/* Save it to storage */
hr = OleSave(pPersistStorage, pStorage, FALSE);
if (hr != S_OK)
goto cleanup;
/* Open the Presentation data srteam */
hr = IStorage_OpenStream(pStorage, name, 0, STGM_CREATE|STGM_SHARE_EXCLUSIVE|STGM_READWRITE, 0, &pStream);
if (hr != S_OK)
goto cleanup;
/* Read the presentation header */
hr = IStream_Read(pStream, &pdh, sizeof(PresentationDataHeader), NULL);
if (hr != S_OK)
goto cleanup;
mfBits = HeapAlloc(GetProcessHeap(), 0, pdh.dwSize);
/* Read the Metafile bits */
hr = IStream_Read(pStream, mfBits, pdh.dwSize, NULL);
if (hr != S_OK)
goto cleanup;
/* Create the metafile and place it in the STGMEDIUM structure */
hMetaFile = SetMetaFileBitsEx(pdh.dwSize, mfBits);
hGlobalMF = GlobalAlloc(GMEM_SHARE|GMEM_MOVEABLE, sizeof(METAFILEPICT));
mfPict = (METAFILEPICT *)GlobalLock(hGlobalMF);
mfPict->hMF = hMetaFile;
GlobalUnlock(hGlobalMF);
pmedium->u.hGlobal = hGlobalMF;
pmedium->tymed = TYMED_MFPICT;
hrRet = S_OK;
cleanup:
HeapFree(GetProcessHeap(), 0, mfBits);
if (pStream)
IStream_Release(pStream);
if (pStorage)
IStorage_Release(pStorage);
if (pPersistStorage)
IPersistStorage_Release(pPersistStorage);
return hrRet;
}
/* TODO: Other formats are not implemented */
return E_NOTIMPL;
return DataCacheEntry_GetData(cache_entry, pmedium);
}
static HRESULT WINAPI DataCache_GetDataHere(