Any idea to get a more prowerful try - catch ?

[tonnot]

I have implemented a try catch with

catch (exception & e)
{ Q_debug()<< "Standard exception: "<< e.what()";
}

catch (exception & e)
{ Q_debug()<< "Standard exception: "<< e.what()";
}

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But my program crash and I have not reach the catch line...
(Only I can detect some simple errors, but in example when save a stl::vector with less information that expected, my app simply chrash)
Any idea ?
Is there any more I can write to have more control on errors ?
The errors I want to control are mainly related with c++ code, not on QT objects
Thanks