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

[Matthias Pospiech]

Matthias Pospiech schrieb:
> 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
>
> ...
>   
Which is no solution, since then I cannot place any signal or slot to 
the class QScatterPlot.

Any help appreciated.

Matthias