[Qt-creator] Some bunch of errors on very simple class (newby question)

[Kosta]

Can somebody tell me what's the problem here ? Here is my class : 
.h : 

#ifndef SYSTEMCONFIGTABMGR_H
#define SYSTEMCONFIGTABMGR_H


#include <QThread>


class SystemConfigTabMgr : public QThread

{

Q_OBJECT


public:

SystemConfigTabMgr(QObject *parent = 0);


void run();

};


#endif // SYSTEMCONFIGTABMGR_H



.cpp : 

#include "SystemConfigTabMgr.h"


SystemConfigTabMgr::SystemConfigTabMgr(QObject *parent)

:QThread(parent)

{


}







Errors on compile : 

In file included from d:/Qt/2009.02/qt/include/QtCore/qthread.h:1,

from d:/Qt/2009.02/qt/include/QtCore/QThread:1,

from SystemConfigTabMgr.h:4,

from SystemConfigTabMgr.cpp:1:

d:/Qt/2009.02/qt/include/QtCore/../../src/corelib/thread/qthread.h:67: error: ISO C++ forbids declaration of `QThread' with no type

d:/Qt/2009.02/qt/include/QtCore/../../src/corelib/thread/qthread.h:67: error: only declarations of constructors can be `explicit'

d:/Qt/2009.02/qt/include/QtCore/../../src/corelib/thread/qthread.h:67: error: declaration of `int QObjectQThread::QThread(QObject*)'

d:/Qt/2009.02/qt/include/QtCore/../../src/corelib/kernel/qobject.h:68: error: changes meaning of `QThread' from `struct QThread'

d:/Qt/2009.02/qt/include/QtCore/../../src/corelib/thread/qthread.h:68: error: expected class-name before '(' token

d:/Qt/2009.02/qt/include/QtCore/../../src/corelib/thread/qthread.h:126: error: ISO C++ forbids declaration of `QThread' with no type

In file included from SystemConfigTabMgr.cpp:1:

SystemConfigTabMgr.h:7: error: invalid use of undefined type `struct QThread'

d:/Qt/2009.02/qt/include/QtCore/../../src/corelib/kernel/qobject.h:68: error: forward declaration of `struct QThread'

SystemConfigTabMgr.cpp: In constructor `SystemConfigTabMgr::SystemConfigTabMgr(QObject*)':

SystemConfigTabMgr.cpp:4: error: type `struct QThread' is not a direct base of `SystemConfigTabMgr'

mingw32-make.exe[1]: Leaving directory `D:/Documents and Settings/Secret/Desktop/workspace/TestProject

D:\Qt\2009.02\mingw\bin\mingw32-make.exe: Leaving directory `D:/Documents and Settings/Secret/Desktop/workspace/TestProject

mingw32-make.exe[1]: *** [debug/SystemConfigTabMgr.o] Error 1

D:\Qt\2009.02\mingw\bin\mingw32-make.exe: *** [debug] Error 2

Exited with code 2.

Error while building project TestProject

When executing build step 'Make'









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