Шаблон:CreateFileAsBinaryDataStorage example
Версия от 12:32, 14 августа 2019; Андрей Чусов (обсуждение | вклад)
char l_filename[] = "./somefile";
std::size_t cb_filename = sizeof(l_filename) - 1 /*term. 0*/;
IContiguousDataStorage* pIO = nullptr;
IDataStorage* pStorage = nullptr;
return_code_t err = CreateFileAsBinaryDataStorage(l_filename, cb_filename, FileRead | FileWrite, FileCreateAlways, &pStorage);
if (err < 0)
goto cleanup; //failure of CreateFileAsBinaryDataStorage
err = pStorage->IsInterfaceAvailable(ContiguousDataStorageType);
if (err < 0)
goto cleanup; //failure of IsInterfaceAvailable
err = pStorage->RepresentAs(ContiguousDataStorageType, (void**) &pIO);
if (err < 0)
goto cleanup; //failure of RepresentAs
//access the file via pIO...
cleanup:
if (pStorage)
pStrorage->Release();
if (pIO)
pIO->Release();