CODEWITHSUNDEEP
c++qt
JeffW
JeffW

Reputation: 186

qt overloaded qtextstream output operator with iterator

I've created a two classes - Platform, and PlatformModel. PlatformModel contains a QVector.

I want to output information about each platform in the vector, so I overloaded the output operator of the Platform class like this:

QTextStream &operator <<(QTextStream &outStream, const Platform  &platform);

which is defined as:

QTextStream &operator <<(QTextStream &outStream, const Platform &platform)
{
   platform.print(outStream);
   return outStream;
}

From the PlatformModel object, I iterate through the vector like this:

QVector<Platform*>::const_iterator i;
for(i = mPlatforms.begin(); i != mPlatforms.end(); ++i)
{
    if ((*i)->mInclude)
    {
        outStream << (*i);
    }
}

The QTextStream is eventually written out to a file, but all I'm getting is the address of the platform objects - the overridden operator<< function is not being called. What am I doing wrong?

Upvotes: 1

Views: 1508

Answers (1)

Ilya Kobelevskiy
Ilya Kobelevskiy

Reputation: 5345

You need to deference iterator once more - because vector contains pointers, and iterator is pointer to vector element, i is double pointer.

    outStream << *(*i);

Should work, or you can iterate through vector using Q_FOREACH macro or index for simplicity.

Upvotes: 1

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