2012년 11월 18일 일요일에 Andreas Volz님이 작성: > Hello, > > I've just some problem to understand that event_info parameter in Evas > callbacks. e.g.: > > http://docs.enlightenment.org/auto/elementary/fileselector_example_c.html > > ... > /* 'selected' cb */ > static void > _fs_selected(void *data, > Evas_Object *obj, > void *event_info) > { > const char *selected = event_info; > /* event_info contains the full path of the selected file */ > > printf("There's been a selection: %s\n", selected); > } > ... > /* the 'done' cb is called when the user presses ok/cancel */ > evas_object_smart_callback_add(fs, "done", _fs_done, win); > ... > > In this example the event_info* is casted in sime magic way to a char*. > My problem is that event_info* could always be anything and I don't > know it without looking into the sources (here e.g. elm_fileselector). > It's not written anywhere in the documentation that event_info* is a > char*. (Or I didn't find it...) > > So is there any way to find out as API user the type of event_info* > which I should cast? > > In my special case (Eflxx C++ wrapper) have the problem to design a > type safe interface. I've really no idea to do it. But even using the C > interface I don't like it. Or did I miss understood the API? > > I would really prefer that event_info* would be some structure with a > data pointer and some magic identifiers. Then it would be possible to > find out the type of an event. > > What do you think? Am I alone with this problem? Any ideas for a better > event_info interface?
if event_info has a structure with magic number or type, magic number could be conflicted after widget customization by end user if widget customization is allowed. but I don't know customization is allowed or not now or for the future. > > regards > Andreas > > -- > Technical Blog <http://andreasvolz.wordpress.com/> > > > ------------------------------------------------------------------------------ > Monitor your physical, virtual and cloud infrastructure from a single > web console. Get in-depth insight into apps, servers, databases, vmware, > SAP, cloud infrastructure, etc. Download 30-day Free Trial. > Pricing starts from $795 for 25 servers or applications! > http://p.sf.net/sfu/zoho_dev2dev_nov > _______________________________________________ > enlightenment-devel mailing list > enlightenment-devel@lists.sourceforge.net <javascript:;> > https://lists.sourceforge.net/lists/listinfo/enlightenment-devel > -- BRs, Kim. ------------------------------------------------------------------------------ Monitor your physical, virtual and cloud infrastructure from a single web console. Get in-depth insight into apps, servers, databases, vmware, SAP, cloud infrastructure, etc. Download 30-day Free Trial. Pricing starts from $795 for 25 servers or applications! http://p.sf.net/sfu/zoho_dev2dev_nov _______________________________________________ enlightenment-devel mailing list enlightenment-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/enlightenment-devel
