okclose


    May 03 2011 | 4:57 pm
    Hi.
    I want an external to display a text editor, and - when the editor gets closed - behave more or less like coll.
    I had a look at the coll source file, in the 4.5.5 SDK, and found there is an "okclose". I'd love to have more info about it:
    - how does the "result" argument behave?
    - In the example, the otherwise undocumented advise() function is called (prototyped in ext_proto.h). A quick search in the Max 5.1.7 framework shows two other seemingly related functions: advise_explain() (also in ext_proto.h) and wind_advise() (in ext_wind.h). Which one should I use in a "new style" object? Would advise_explain() (my favorite one, with custom text for the buttons) be ok?
    Thank you very much! aa

    • May 08 2011 | 8:24 pm
      Here's the code which calls it, which should be self explanatory.
      Have fun!
      -Joshua
      sprintf(msg, "Save changes to "%s" before closing?", filename->s_name);
      // give our owner a chance to take control
      okclose = zgetfn(p->v_owner, gensym("okclose"));
      if (okclose) {
      	short result = 0;	// changed from long to short to fix ppc bug
      	object_method(p->v_owner, gensym("okclose"), msg, &result);
      	switch (result) {
      		case 0:		/* normal thing */
      		case 1:		/* they changed the string */
      			break;
      		case 2:		/* don't put up a dialog, clear dirty bit */
      			object_attr_setchar(p->v_owner, ps_dirty, 0);
      		case 3:		/* don't put up a dialog */
      			goto skipalert;
      		case 4:		/* act as though user "cancelled" */
      			return (void*) -1;
      		default:
      			break;
      	}
      }
      res = wind_advise((t_object*) p, msg);
      switch (res) {
      	case ADVISE_SAVE:
      		if (jwind_save(p))
      			return (void*) -1;		// error saving, treat as cancel
      		break;
      	case ADVISE_CANCEL:
      		return (void*) -1;
      	case ADVISE_DISCARD:
      		object_attr_setchar(p->v_owner, ps_dirty, 0);
      		break;
      }
      
    • May 09 2011 | 7:34 am
      thank you Joshua! aa