QCloseEvent

[scrasun]

I am trying to use 'QCloseEvent', but get this error:

board.cpp:180: error: invalid use of incomplete type ‘struct QCloseEvent’
/usr/include/qt4/QtGui/qwidget.h:83: error: forward declaration of ‘struct QCloseEvent’

board.cpp:180: error: invalid use of incomplete type ‘struct QCloseEvent’
/usr/include/qt4/QtGui/qwidget.h:83: error: forward declaration of ‘struct QCloseEvent’

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This is the code I am using ( in board.cpp):

void Board::closeEvent(QCloseEvent *event){
//some code
event->accept();
//some more code
}

void Board::closeEvent(QCloseEvent *event){
//some code
event->accept();
//some more code
}

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in board.h I have:

protected:
void closeEvent(QCloseEvent *event);

protected:
void closeEvent(QCloseEvent *event);

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Does anyone know what I have done wrong?

Any help is appreciated.