[Qt-interest] unresolved Symbol (QMetaObject const QwtPlot::staticMetaObject) in qwtplot derived Class

[Matthias Pospiech]

Matthias Pospiech schrieb:
> I have the following class which is derived from QwtPlot (which is 
> derived from QFrame)
> It includes  Q_OBJECT, a moc file is created and part of the project, 
> but I get this linker error:
>
> 1>moc_QScatterPlot.obj : error LNK2001: Nicht aufgelöstes externes 
> Symbol ""public: static struct QMetaObject const 
> QwtPlot::staticMetaObject" (?staticMetaObject at QwtPlot@@2UQMetaObject@@B)".
>
> Why, and how do I resolve it?
>
>   
It is resolved by removing Q_OBJECT

class QScatterPlot : public QwtPlot
{
    //Q_OBJECT

...

Matthias