[Quantlib-dev] How to output into Excel cell an error message directly from qlxl function call?

[a.p. <an...@gm...>]

Hello.
I try to return an error message directly from any OPER* function. Usually,
in any catch section (at the end of XLL_DEC function description) error
message are logged by logError() function. So return value is 0, or #NUM in
Excel cell. Is there any way to return an error message during function
call, instead of usage retrieveError function (like in QLXL framework by
"Display error" option)? I tried to create a local XLOPER variable in catch
section, such as:

catch (const std::exception &e) {
    XLOPER returnValue;
    const std::string str = e.what();
    ObjectHandler::scalarToOper(str, returnValue);
    return &returnValue;
} 
but of course it doesn't work cause the returnValue variable is local.
Thanks.
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