[maemo-developers] calendar-backend API: CCalendar's entries empty

[From: Nicolai Hess]

2010/11/5 Filip-M. Brinkmann <filip.brinkmann at gmail.com>

> Hi all,
>
> I'd like to code a small Todo-list widget, which shows all due to-dos on
> the desktop.
> I started today, but I cannot access the to-dos because the CCalendar
> instances don't return any entries.
> I have 2 Calendars on my N900 and I get two calendar instances back,
> which is fine. They return the correct names and attributes, but are
> otherwise unresponsive. ;)
> so, for instance the following code returns 0 as to-do count:
>
> ...
>
> QString output;
> int count=0;
> int error;
>
> CMulticalendar* mcal = CMulticalendar::MCInstance();
> vector<CCalendar*> cals = mcal->getListCalFromMc();
> for(std::vector<CCalendar*>::iterator it = cals.begin(); it != cals.end();
> ++it){
> // here, I get those 2 calendars correctly
>
> // next line sums up to 0 all the time
> count += (dynamic_cast<CCalendar*>(*it))->getTodos(error).size();
>
> // next line shows the calendar names
> cerr << (dynamic_cast<CCalendar*>(*it))->getCalendarName();
> }
>
> output= QString("Found %1 todos.").arg(count);
> // count is 0 here, although I have like 20 todos in one calendar
> return output;
>
> --
> Same behaviour shows on getEvents() and so on...
>
> Since documentation is...ehm... not very complete:
> does anyone know what happens there?
>
> cheers,
>
> filip
>
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For debugging purpose you can create an empty file:
/home/user/.calendar/log
(reboot may necessary)

This file indicates the calendar-backend to log  ALL sql and results as
syslog messages.
Now you can see which sql and parameters are called for example to retrive
all todos with
"getTodos()"

Btw pay attention, that methods like this one:
  (dynamic_cast<CCalendar*>(*it))->getTodos(error).size();

create a vector with dynamically allocated objects, and you have
to free them.

regards
nicolai
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