Is it possible to find out of what type a pointer is, something like typeid (c++) or instanceof (java)?

Currently I'm saving pointers into a container. Later on I get them back as void* ... now I'd like to cast them back to their original type.

Any ideas?

Regards,
Pegamode.

Nope. This is C, not C++. You can keep track of the types by adding the items in question into a list, manually coupled on the structure's name. If only the stringify macro would work, then this could be done automatically.