HRESULT OpenPropSeqStorage (DWORD dwMode, IStorage **ppStorage)
{
WStorage StgRoot;
WStorage Stg;
if (!DEX_GetProjectStorage(*StgRoot.ppv()))
return E_UNEXPECTED;
HRESULT hr = OpenStorage (g_cbPropertySequences, dwMode, StgRoot, Stg.ppi());
if (FAILED(hr)) {
if (!(STGM_WRITE & dwMode) && !(STGM_READWRITE & dwMode))
return hr;
RETURN_FAILED_HRESULT(StgRoot -> CreateStorage (g_cbPropertySequences, STGM_READWRITE | STGM_SHARE_EXCLUSIVE | STGM_TRANSACTED | STGM_CREATE, 0L, 0L, Stg.ppi()));
RETURN_FAILED_HRESULT(Stg -> SetClass (CLSID_PropertyActionSequence));
}
*ppStorage = Stg.detach();
return S_OK;
}
// Öffnen des PropertySequenceSubStorages
static HRESULT GetSubPropSeqStorage (IStorage **ppIStg)
{
if (NULL == ppIStg) return E_POINTER;
WStorage IRootStg;
if (!DEX_GetProjectStorage(*IRootStg.ppv()))
return E_FAIL;
USES_CONVERSION;
WStorage IStg;
HRESULT hr = IRootStg -> OpenStorage (A2OLE(g_cbPropertyChoices), NULL,
STGM_READWRITE|STGM_SHARE_EXCLUSIVE|STGM_TRANSACTED,
NULL, 0L, IStg.ppi());
if (FAILED(hr)) {
// mit Schreibschutz versuchen
hr = IRootStg -> OpenStorage (A2OLE(g_cbPropertyChoices), NULL,
STGM_READ|STGM_SHARE_EXCLUSIVE|STGM_TRANSACTED,
NULL, 0L, IStg.ppi());
if (FAILED(hr)) return hr;
}
CLSID clsId;
hr = ReadClassStg (IStg, &clsId);
if (FAILED(hr)) return hr;
if (!IsEqualCLSID (clsId, CLSID_PropertyChoice))
return E_FAIL;
*ppIStg = IStg.detach();
return hr;
}
// Öffnen des PropertySequenceSubStorages
static HRESULT GetSubPropSeqStorage (IStorage **ppIStg, bool fCreate = false)
{
if (NULL == ppIStg) return E_POINTER;
WStorage IRootStg;
if (!DEX_GetProjectStorage(*IRootStg.ppv()))
return E_FAIL;
USES_CONVERSION;
WStorage IStg;
HRESULT hr = E_FAIL;
{
bool fRO = false;
hr = IRootStg -> OpenStorage (A2OLE(g_cbPropertySequences), NULL,
STGM_READWRITE|STGM_SHARE_EXCLUSIVE|STGM_TRANSACTED,
NULL, 0L, IStg.ppi());
if (FAILED(hr)) {
if (STG_E_FILENOTFOUND == GetScode(hr) && fCreate) {
// existiert nicht, evtl. neu erzeugen
hr = IRootStg -> CreateStorage (A2OLE(g_cbPropertySequences),
STGM_READWRITE|STGM_SHARE_EXCLUSIVE|STGM_TRANSACTED|STGM_CREATE,
0L, 0L, IStg.ppi());
if (SUCCEEDED(hr))
hr = WriteClassStg (IStg, CLSID_PropertyActionSequence);
} else if (STG_E_ACCESSDENIED == GetScode(hr)) {
// mit Schreibschutz versuchen
hr = IRootStg -> OpenStorage (A2OLE(g_cbPropertySequences), NULL,
STGM_READ|STGM_SHARE_EXCLUSIVE|STGM_TRANSACTED,
NULL, 0L, IStg.ppi());
fRO = true;
} else
return hr;
}
if (SUCCEEDED(hr)) {
CLSID clsId;
hr = ReadClassStg (IStg, &clsId);
if (FAILED(hr)) return hr;
if (!IsEqualCLSID(clsId, CLSID_PropertyActionSequence) &&
!IsEqualCLSID(clsId, CLSID_NULL))
{
return E_FAIL;
}
if (IsEqualCLSID(clsId, CLSID_NULL) && !fRO)
hr = WriteClassStg (IStg, CLSID_PropertyActionSequence);
}
}
if (FAILED(hr)) return hr;
*ppIStg = IStg.detach();
return hr;
}
