1. When the exception is referred to the user for processing, the exception handling method Veh-〉seh-〉vch is called in the following order.
2. When veh indicates that an exception was handled, it is not passed to SEH, but the exception is passed to VCH.
3. When the veh is not processed, it is passed to Seh.
4. When all the exception handlers for SEH are not able to handle the exception, the default Seh (that is, Ueh, only the SEH) handler function is invoked.
5. When SEH handles an exception and starts execution from except, the exception is no longer passed to VCH.
6. When Seh returns to the exception generation execution, VCH is called before returning.
Attention!!! In *unix, the signal is used to deal with it. So if you want to be compatible (like the compiler must implement two ways).
Relationships between Veh, SEH, Ueh, VCH in Windows exception handling
