[Lazarus] Add notification to callstack change.

[Sven Barth]

Am 08.02.2012 16:47, schrieb Everton Vieira:
> Yes, is some like it i`m already doing. But this mean to put a lot of DumpStacks in the code witch is not nice.
>
> How can the debugger know that a specific line is about to be executed. Must be some listening/event for.

A debugger uses the debug API provided by the operating system together 
with some debug information to know which instructions map to which 
source lines. And no, it won't work if you try to debug an application 
from within that same application...

Regards,
Sven