catching exceptions in Javascript thrown from ActiveX control written in C++ -

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i've written activex control in c++ throws (c++) exceptions out when error conditions occur within control. javascript code invokes object representing instance of control surrounded try - catch block:

try {     var controlinstance = window.controlinstance;      ... perform operations on controlinstance ... } catch (e) {     alert("something bad happened"); }

now, when run code under ie8 (or 7 or 6) visual studio (2008) debugger attached it, works expected - whether control compiled or without debug on. however, when running browser without debugger attached, ie crashes (really) when exception crosses boundary between control , jscript.

does have suggestions around how solve problem? realize can change control's interface pass exception argument rather not make such change.

any appreciated.

you need atlreporterror. throws javascript exception description string:

stdmethodimp cmyctrl::mymethod() {    ...    if (bsucceeded)       return s_ok;    else       // hres set disp_e_exception       return atlreporterror (getobjectclsid(), "my error message"); }

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