Hi Elias,
The name of a Symbol uniquely identifies a symbol within one Workspace
(and there is only one Workspace).
The only cases where the pointer changes is when a new workspace with
the same symbol name
is loaded or when the symbol is explicitly )ERASEd or ?EXed.
I all these cases you should get an SEV_ERASED event via the callback
function.
After that event the pointer is no longer valid and should be discarded. You
should never ignore an SEV_ERASED event.
/// Jürgen
On 02/16/2014 05:03 PM, Elias Mårtenson wrote:
Hello Jürgen,
In my work to implement the variable viewer, I need some information
from you, if you are willing to share.
When the user closes the last trace window for a symbol, the system
needs to unregister the listener for this symbol. This means I need to
know what I can use to uniquely identify a symbol.
Since there can be multiple symbols with the same name in different
workspaces, I clearly can't use the name as identifier.
The easiest thing to use would of course be the pointer to the Symbol
instance itself. However, I don't know if I can rely on this never
changing. Can this instance ever be changed? I.e. can I use &symbol as
a key into a std::map that tracks all active listeners?
Regards,
Elias
