[Qt-interest] sendPostedEvents() does not dispatch all events

[Nikos Chantziaras]

Since the documentation of QCoreApplication::processEvents() states that:

   "In event you are running a local loop which calls this function
    continuously, without an event loop, the DeferredDelete events
    will not be processed. [...] An alternative would be to call
    sendPostedEvents() from within that local loop."

However, deleting a QObject with:

   someObj->deleteLater();

and then doing:

   qApp->sendPostedEvents();

does not result in 'someObj' being deleted.  For that to happen, I have 
to explicitly call:

   qApp->sendPostedEvents(0, QEvent::DeferredDelete);

Is this a bug or expected behavior?  The documentation of 
sendPostedEvents() would suggest that simply all events are dispatched, 
and does not state any exceptions (like DeferredDelete).

In my case, the local loop happens inside the QCoreApplication main 
event loop; that is, after a call to app->exec().  The local loop does 
some processing and calls:

   qApp->sendPostedEvents();
   qApp->processEvents();

to keep the GUI responsive.  But it seems I have to call 
"qApp->sendPostedEvents(0, QEvent::DeferredDelete)" in addition, since 
QWidget subclasses in that local loop are deleted with deleteLater(). 
I'd just like to know why that is, and why "qApp->sendPostedEvents()" 
doesn't dispatch the DeferredDeletes.