Linker error

[Tavit]

Hi Everybody ,
I have a problem with linker error. I tried all way's ,But I don't have solution .Can any one solve me ....


Errors looks like below.......

error LNK2019: unresolved external symbol "public: static struct QMetaObject const QwtPlot::staticMetaObject" (?staticMetaObject@QwtPlot@@2UQMetaObject@@B) referenced in function "class QwtPlot * __cdecl qobject_cast<class QwtPlot *>(class QObject *)" (??$qobject_cast@PAVQwtPlot@@@@YAPAVQwtPlot@@PAVQO bject@@@Z)
release\fourpanewindow.exe : fatal error LNK1120: 1 unresolved externals

Thank's.
Regards,
Tavit.

[wysota]

Have you run moc on your header file?