本文整理汇总了C++中LPSTORAGE::CreateStream方法的典型用法代码示例。如果您正苦于以下问题：C++ LPSTORAGE::CreateStream方法的具体用法？C++ LPSTORAGE::CreateStream怎么用？C++ LPSTORAGE::CreateStream使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类LPSTORAGE的用法示例。
在下文中一共展示了LPSTORAGE::CreateStream方法的4个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Save
STDMETHODIMP VLCPersistStorage::Save(LPSTORAGE pStg, BOOL fSameAsLoad)
{
if( NULL == pStg )
return E_INVALIDARG;
if( fSameAsLoad && (S_FALSE == IsDirty()) )
return S_OK;
LPSTREAM pStm = NULL;
HRESULT result = pStg->CreateStream(L"VideoLAN ActiveX Plugin Data",
STGM_CREATE|STGM_READWRITE|STGM_SHARE_EXCLUSIVE, 0, 0, &pStm);
if( FAILED(result) )
return result;
LPPERSISTSTREAMINIT pPersistStreamInit;
if( SUCCEEDED(QueryInterface(IID_IPersistStreamInit, (void **)&pPersistStreamInit)) )
{
result = pPersistStreamInit->Save(pStm, fSameAsLoad);
pPersistStreamInit->Release();
}
pStm->Release();
return result;
};示例2: WriteToStorage
BOOL CSummInfo::WriteToStorage(LPSTORAGE lpRootStg)
{
if (lpRootStg != NULL)
{
LPSTREAM lpStream = NULL;
if (FAILED(lpRootStg->CreateStream(szSummInfo,
STGM_SHARE_EXCLUSIVE|STGM_CREATE|STGM_READWRITE,
0, 0, &lpStream)))
{
TRACE(_T("CreateStream failed\n"));
return FALSE;
}
else
{
if(!m_propSet.WriteToStream(lpStream))
{
TRACE(_T("WriteToStream failed\n"));
return FALSE;
}
lpRootStg->Commit(STGC_DEFAULT);
lpStream->Release();
return TRUE;
}
}
return FALSE;
}示例3: ReadDirectory
void ReadDirectory(const char* szPath, LPSTORAGE pStg)
{
// recursive function
USES_CONVERSION;
WIN32_FIND_DATA fData;
HANDLE h;
char szNewPath[MAX_PATH];
char szStorageName[100];
char szStreamName[100];
char szData[81];
char* pch = NULL;
LPSTORAGE pSubStg = NULL;
LPSTREAM pStream = NULL;
g_nIndent++;
strcpy(szNewPath, szPath);
strcat(szNewPath, "*.*");
h = ::FindFirstFile(szNewPath, &fData);
if (h == (HANDLE) 0xFFFFFFFF) return; // can't find directory
do {
if (!strcmp(fData.cFileName, "..") ||
!strcmp(fData.cFileName, ".") ) continue;
while((pch = strchr(fData.cFileName, '!')) != NULL) {
*pch = '|';
}
if (fData.dwFileAttributes & FILE_ATTRIBUTE_DIRECTORY) {
// It's a directory, so make a storage
strcpy(szNewPath, szPath);
strcat(szNewPath,fData.cFileName);
strcat(szNewPath, "\\");
strcpy(szStorageName, fData.cFileName);
szStorageName[31] = '\0'; // limit imposed by OLE
TRACE("%0.*sStorage = %s\n", (g_nIndent - 1) * 4,
g_szBlanks, szStorageName);
VERIFY(pStg->CreateStorage(T2COLE(szStorageName),
STGM_CREATE | STGM_READWRITE | STGM_SHARE_EXCLUSIVE,
0, 0, &pSubStg) == S_OK);
ASSERT(pSubStg != NULL);
ReadDirectory(szNewPath, pSubStg);
pSubStg->Release();
}
else {
if ((pch = strrchr(fData.cFileName, '.')) != NULL) {
if (!stricmp(pch, ".TXT")) {
// It's a text file, so make a stream
strcpy(szStreamName, fData.cFileName);
strcpy(szNewPath, szPath);
strcat(szNewPath, szStreamName);
szStreamName[32] = '\0'; // OLE max length
TRACE("%0.*sStream = %s\n", (g_nIndent - 1) * 4,
g_szBlanks, szNewPath);
CStdioFile file(szNewPath, CFile::modeRead);
// Ignore zero-length files
if(file.ReadString(szData, 80)) {
TRACE("%s\n", szData);
VERIFY(pStg->CreateStream(T2COLE(szStreamName),
STGM_CREATE | STGM_READWRITE |
STGM_SHARE_EXCLUSIVE,
0, 0, &pStream) == S_OK);
ASSERT(pStream != NULL);
// Include the null terminator in the stream
pStream->Write(szData, strlen(szData) + 1, NULL);
pStream->Release();
}
}
}
}
} while (::FindNextFile(h, &fData));
g_nIndent--;
}示例4: GetPropsetData
BOOL COleControl::GetPropsetData(LPFORMATETC lpFormatEtc,
LPSTGMEDIUM lpStgMedium, REFCLSID fmtid)
{
ASSERT_VALID(this);
ASSERT(AfxIsValidAddress(lpFormatEtc, sizeof(FORMATETC), FALSE));
ASSERT(AfxIsValidAddress(lpStgMedium, sizeof(STGMEDIUM)));
BOOL bGetDataHere = (lpStgMedium->tymed != TYMED_NULL);
// Allow IStream or IStorage as the storage medium.
if (!(lpFormatEtc->tymed & (TYMED_ISTREAM|TYMED_ISTORAGE)))
{
TRACE0("Propset only supported for stream or storage.\n");
return FALSE;
}
LPSTORAGE lpStorage = NULL;
LPSTREAM lpStream = NULL;
if (lpFormatEtc->tymed & TYMED_ISTORAGE)
{
// Caller wants propset data in a storage object.
if (bGetDataHere)
{
// Use the caller-supplied storage object.
lpStorage = lpStgMedium->pstg;
}
else
{
// Create a storage object on a memory ILockBytes implementation.
LPLOCKBYTES lpLockBytes = NULL;
if (FAILED(CreateILockBytesOnHGlobal(NULL, TRUE, &lpLockBytes)))
{
TRACE0("CreateILockBytesOnHGlobal failed.\n");
return FALSE;
}
ASSERT_POINTER(lpLockBytes, ILockBytes);
if (FAILED(StgCreateDocfileOnILockBytes(lpLockBytes,
STGM_SHARE_EXCLUSIVE|STGM_CREATE|STGM_READWRITE, 0,
&lpStorage)))
{
TRACE0("StgCreateDocfileOnILockBytes failed.\n");
lpLockBytes->Release();
return FALSE;
}
// Docfile now has reference to ILockBytes, so release ours.
lpLockBytes->Release();
}
ASSERT_POINTER(lpStorage, IStorage);
// Create a stream within the storage.
if (FAILED(lpStorage->CreateStream(OLESTR("Contents"),
STGM_SHARE_EXCLUSIVE|STGM_CREATE|STGM_READWRITE, 0, 0,
&lpStream)))
{
TRACE0("IStorage::CreateStream failed.\n");
if (!bGetDataHere)
lpStorage->Release();
return FALSE;
}
}
else
{
// Caller wants propset data in a stream object.
if (bGetDataHere)
{
// Use the caller-supplied stream object
lpStream = lpStgMedium->pstm;
}
else
{
lpStream = _AfxCreateMemoryStream();
if (lpStream == NULL)
return FALSE;
}
}
ASSERT_POINTER(lpStream, IStream);
// Create the property set.
CLSID clsid;
GetClassID(&clsid);
CPropertySet pset(clsid);
pset.SetOSVersion(MAKELONG(LOWORD(GetVersion()), OSTYPE));
CPropertySection* ppsec = pset.AddSection(fmtid);
if (ppsec == NULL)
{
TRACE0("CPropertySet::AddSection failed.\n");
lpStream->Release();
lpStorage->Release();
return FALSE;
//.........这里部分代码省略.........