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[toreo]

If you intend there to be only one Tahede instance in your program, please look at the singleton pattern. If you want to have a delayed construction of a member variable, you need to initialize it to 0 first. Perhaps the following would work (might not compile verbatim, inline code for a brief example):

class MyObject : public QObject
{
public:
    MyObject() : _tahede(0) {}
 
    void doExec() {
        tahede()->exec();
    }
 
protected:
    Tahede* tahede() {
        if(!_tahede)
            _tahede = new Tahede(this);
        return _tahede;
    }
 
private:
    Tadede* _tahede;
};

class MyObject : public QObject
{
public:
    MyObject() : _tahede(0) {}

    void doExec() {
        tahede()->exec();
    }

protected:
    Tahede* tahede() {
        if(!_tahede)
            _tahede = new Tahede(this);
        return _tahede;
    }

private:
    Tadede* _tahede;
};

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