The other day we all learned how to disable the close button
with GetSystemMenu and RemoveMenu. They will allow you to
disable (grey-out) the shutdown X in the control box. But
this will still leave ALT+F4 as a means to shut down your app.

Is there any way to intercept this keypress sequence to force
the user into using a command button to quit the app? Or a
way to disable ALT+F4 from closing your app?