void FPDFAPI_FlatPageAttr(CPDF_Dictionary* pPageDict, FX_BSTR name)
{
    if (pPageDict->KeyExist(name)) {
        return;
    }
    CPDF_Object* pObj = FPDFAPI_GetPageAttr(pPageDict, name);
    if (pObj) {
        pPageDict->SetAt(name, pObj->Clone());
    }
}
CPDF_Object* CPDF_Page::GetPageAttr(const CFX_ByteStringC& name) const
{
    return FPDFAPI_GetPageAttr(m_pFormDict, name);
}
CPDF_Object* CPDF_Page::GetPageAttr(FX_BSTR name) const
{
    return FPDFAPI_GetPageAttr(m_pFormDict, name);
}