C++ (Cpp) SystemData::push_back Examples

Example #1

File: dataobj.cpp Project: hazeeq090576/wxWidgets

// 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;
}