Thanks a lot for the info Christof, IOhannes and Miller. Everything is starting to make sense :)

Is there any kind of document containing development guidelines or an explanation of the inner workings of PD?

The closest i could find is the ChangeLog.txt (which contained precious information that really helped me get started) in the "original source notes" section . https://github.com/pure-data/pure-data/blob/master/src/CHANGELOG.txt#L135

Cheers, Henri.

________________________________ De: Christof Ressi christof.ressi@gmx.at Enviado: terça-feira, 20 de novembro de 2018 15:29 Para: Henri Augusto Bisognini Cc: pd-dev@lists.iem.at Assunto: Aw: [PD-dev] why some structs are defined in m_obj.c? + what are vinlets and voutlets?

Hi,

you can actually use obj_starttraverseoutlet() to traverse the outlets like this:

// x is your object t_outlet *outlet; int nout = obj_noutlets(x); for (int i = 0; i < nout; ++i){ obj_starttraverseoutlet(x, &outlet, i); // do something with outlet }

obj_starttraverseoutlet returns the connections from this outlet to other ojects (which you can traverse with obj_nexttraverseoutlet), but it also gives you the outlet via the second parameter (a t_outlet** so it can change your t_outlet* to point to the right outlet).

note that those functions are not part of the public API, so use with caution.

Christof

Gesendet: Dienstag, 20. November 2018 um 17:37 Uhr Von: "Henri Augusto Bisognini" msndohenri@hotmail.com An: "pd-dev@lists.iem.at" pd-dev@lists.iem.at Betreff: [PD-dev] why some structs are defined in m_obj.c? + what are vinlets and voutlets?

Hi.

I'm starting to dwelve into pd's C side of things. I'm having a really hard time figuring stuff out. (i have mainly experience with more high-level languages like Java, etc)

I'm trying to experiment with some editor features and i've been wandering:

why the _inlet and _outlet structures are defined in m_obj.c instead of m_pd.h ?

This way i can't access the structure members. I'm trying to traverse an t_object's t_outlets linked list but

t_outlet *o = selected_object->te_outlet; o = o->o_next; but this throws me an "dereferencing incomplete type" error since there is no definition for t_outlet inside m_pd.

The same goes for accessing members of t_outconnect for example, but there are two methods that allows you to traverse the connections linked list obj_starttraverseoutlet() (m_imp.h)(m_obj.c) obj_nexttraverseoutlet() (m_imp.h)(m_obj.c)

But i couldn't find any method to traverse an t_object's linked list of t_outlets. The only three methods that seems to return t_outlets pointers are

t_outlet *outlet_new(t_object *owner, t_symbol *s) (m_obj.c) t_outlet *canvas_addoutlet(t_canvas *x, t_pd *who, t_symbol *s) (g_graph.c) and t_outlet *voutlet_getit(t_pd *x) (g_io.c) which i currently do not understand but doesn't seem to be what i'm looking for.

How could i traverse from, lets say the g_editor.c file, all the t_inlets and t_outlets of an t_object?

Btw, on a second question, what exactly are vinlets and voutlets?

Cheers, Henri._______________________________________________ Pd-dev mailing list Pd-dev@lists.iem.at https://lists.puredata.info/listinfo/pd-dev