BlitzMax/Language/Exceptions

BlitzMax provides a mechanism for handling runtime errors known as exception handling

An exception is actually just an object. You can throw and catch exceptions using the Throw command and a Try / Catch block. Here is a simple example:

Function ExTest Throw "Bingo!" End Function

Try ExTest Catch ex:Object Print ex.ToString End Try

Throwing an exception causes the program to jump to the most recent Catch block. You can provide multiple catch blocks for catching exceptions of different types. If there is no appropriate Catch block for the exception, then the program jumps to the next most recent Catch block. If no catch block can be found to deal with the exception, the program will end.

BlitzMax has several built-in exception types, all of which extend type TBlitzException. These are: