I've read this tutorial: http://www.bsalsa.com/ewb_on_get_ext.html

I'm using it to create custom javascript functions to be handled by
Delphi. Actually, I've managed to do everything except... setting a
non integer return value for the javascript function in the OnInvoke
handler.

PVariant(VarResult)^ := 'foo';

Just causes my application to freeze!

Sorry for bugging you, but I used to be a Windows API programmer in
C++, now we're talking COM in Delphi. I'm a bit confused.

Thank you
Giacomo