bool
wxIDataObject::HasSystemData(wxDataFormat format) const
{
for ( SystemData::const_iterator it = m_systemData.begin();
it != m_systemData.end();
++it )
{
FORMATETC* formatEtc = (*it)->pformatetc;
if ( formatEtc->cfFormat == format )
return true;
}
return false;
}
bool
wxIDataObject::GetSystemData(wxDataFormat format, STGMEDIUM *pmedium) const
{
for ( SystemData::const_iterator it = m_systemData.begin();
it != m_systemData.end();
++it )
{
FORMATETC* formatEtc = (*it)->pformatetc;
if ( formatEtc->cfFormat == format )
{
wxCopyStgMedium((*it)->pmedium, pmedium);
return true;
}
}
return false;
}
// save system data
HRESULT
wxIDataObject::SaveSystemData(FORMATETC *pformatetc,
STGMEDIUM *pmedium,
BOOL fRelease)
{
if ( pformatetc == NULL || pmedium == NULL )
return E_INVALIDARG;
// remove entry if already available
for ( SystemData::iterator it = m_systemData.begin();
it != m_systemData.end();
++it )
{
if ( pformatetc->tymed & (*it)->pformatetc->tymed &&
pformatetc->dwAspect == (*it)->pformatetc->dwAspect &&
pformatetc->cfFormat == (*it)->pformatetc->cfFormat )
{
delete (*it);
m_systemData.erase(it);
break;
}
}
// create new format/medium
FORMATETC* pnewformatEtc = new FORMATETC;
STGMEDIUM* pnewmedium = new STGMEDIUM;
wxZeroMemory(*pnewformatEtc);
wxZeroMemory(*pnewmedium);
// copy format
*pnewformatEtc = *pformatetc;
// copy or take ownerschip of medium
if ( fRelease )
*pnewmedium = *pmedium;
else
wxCopyStgMedium(pmedium, pnewmedium);
// save entry
m_systemData.push_back(new SystemDataEntry(pnewformatEtc, pnewmedium));
return S_OK;
}
