int CManageGroupChat::Init(const QString &szId)
{
int nRet = 0;
nRet = LoadFromStorage(szId);
return nRet;
}
BOOL COleDocument::OnOpenDocument(LPCTSTR lpszPathName)
{
ASSERT(lpszPathName == NULL || AfxIsValidString(lpszPathName));
// just use default implementation if 'docfile' not enabled
if (!m_bCompoundFile && m_lpRootStg == NULL)
{
ASSERT(lpszPathName != NULL);
return CDocument::OnOpenDocument(lpszPathName);
}
if (IsModified())
TRACE(traceOle, 0, "Warning: OnOpenDocument replaces an unsaved document.\n");
// abort changes to current docfile
if (lpszPathName != NULL)
{
DeleteContents();
RELEASE(m_lpRootStg);
}
SetModifiedFlag(); // dirty during de-serialize
BOOL bResult = FALSE;
TRY
{
if (m_lpRootStg == NULL)
{
const CStringW strPathName(lpszPathName);
LPCOLESTR lpsz = lpszPathName ? strPathName.GetString() : NULL;
// use STGM_CONVERT if necessary
SCODE sc;
LPSTORAGE lpStorage = NULL;
if (StgIsStorageFile(lpsz) == S_FALSE)
{
// convert existing storage file
sc = StgCreateDocfile(lpsz, STGM_READWRITE|
STGM_TRANSACTED|STGM_SHARE_DENY_WRITE|STGM_CONVERT,
0, &lpStorage);
}
else
{
// open new storage file
sc = StgOpenStorage(lpsz, NULL,
STGM_READWRITE|STGM_TRANSACTED|STGM_SHARE_DENY_WRITE,
0, 0, &lpStorage);
if (FAILED(sc) || lpStorage == NULL)
sc = StgOpenStorage(lpsz, NULL,
STGM_READ|STGM_TRANSACTED, 0, 0, &lpStorage);
}
if (FAILED(sc))
AfxThrowOleException(sc);
ASSERT(lpStorage != NULL);
m_lpRootStg = lpStorage;
}
// use helper to read document from storage
LoadFromStorage();
SetModifiedFlag(FALSE); // start off with unmodified
bResult = TRUE;
}
CATCH_ALL(e)
{
DeleteContents(); // removed failed contents
RELEASE(m_lpRootStg);
// if not file-based load, return exceptions to the caller
if (lpszPathName == NULL)
{
THROW_LAST();
}
TRY
{
ReportSaveLoadException(lpszPathName, e,
FALSE, AFX_IDP_FAILED_TO_OPEN_DOC);
}
END_TRY
DELETE_EXCEPTION(e);
}
END_CATCH_ALL
return bResult;
}
