Error handling design advice plz

Hi all,

I'm looking for your advice on error handling strategy; best practice kind of.

My application is a QWizard inheritor. All kinds of errors will eventually need be logged, categorized presumably. A subset of errors will additionally redirect the wizard to an error page and display there.

I'm undecided about how to implement this: Is interception by qInstallMessageHandler() a good idea? Or should I drop this idea and implement something myself? Any technical reasons at all? Or just a matter of style?