maemo.org - Talk - View Single Post - QDataStream ad QList problem!

gri	2010-06-03 , 21:49
Posts: 190 \| Thanked: 129 times \| Joined on Mar 2010 @ Bavaria, Germany	#2

First, please make the writing function const.

Code:

QDataStream &operator<<(QDataStream &out,  const Service &service);
QDataStream &operator>>(QDataStream &in, Service &service);

The second is, you can only use non-pointer types of Service when exporting the whole QList to a QDataStream. The following would work:

Code:

QList<Service> services;
mystream << services;

If you can't change to non-pointer type, you will have to iterate through the list at your own.

Code:

QList<Service*> services;
mystream << services.size();
foreach(Service* service, services)
  mystream << *service;

Edit: Also please stay away from creating QList<>s on the heap

the strange thing is that << seems to work with QList<Service*>!

If that's the only problem, try this:

Code:

mystream << *services;

Last edited by gri; 2010-06-03 at 21:52.

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