>I'm looking at and trying to understand someone else's code.
>
>The situation:
>
>- An SCX form based on a form class frmAllBase
>- On that SCX form there's a Command Button (cmdXLS), based on a hierarchy of command button classes
>
>Most of cmdXLS's methods inherit from one of its parent command button classes (as expected). But some of them appear to inherit from frmAllBase (see attached image).
>
>frmAllBase is a Form class (with its own inheritance hierarchy) and is no way based on any of cmdXLS's parent command button classes.
>
>Can anyone explain what's going on? Is this multiple inheritance of some kind, and if so how was it set up?

There is a class frmAllBase and it has the cmdppzBase on it. So if the dev puts code in the click of the button on the form, you see that, frmallbase, and then on down the button's hierarchy.

Does that sound right?