[PD] finding out if an abstraction instance exists

[Jonathan Wilkes]

I can think of two ways:
1) something like canvas_find method -- walk through every toplevel looking for a canvas_class of the relevant filename/binbuf/whatever
2) take the abstraction's name, add "pd-" to the front, create a t_symbol* from it and go spelunking in the symbol's s_thing for receivers.  But this isn't foolproof, as someone can easily create a receiver with the same name as an abstraction.
I encapsulated #1 in the pd-l2ork introspection objects [pdinfo] and [canvasinfo].
-Jonathan
 

    On Monday, January 11, 2016 1:47 PM, IOhannes m zmölnig <zmoelnig at iem.at> wrote:
 

 On 01/11/2016 07:07 PM, Dan Wilcox wrote:
> Is there a pd messages / C api call to query whether any instance of a abstraction exists? I mainly need to know if a specific object is alive somewhere and without any global variable messaging etc as I don’t want to modify the abstraction itself.

"exists" as in "instantiated" or "lives on the filesystem" (either in
Pd's search path or outside it?)?



gfsmrda
IOhannes

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