I got it wrong, can't compile

[been_1990]

Don't kill me for asking, but how do I implement it? The video didn't write anything else, the source code, QAbstractItemDelegate.cpp the body of the constructor is blank , it's just like that:

QAbstractItemDelegate::QAbstractItemDelegate(QObject *parent = 0)
{
 
}

QAbstractItemDelegate::QAbstractItemDelegate(QObject *parent = 0)
{

}

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And now when I try to compile I get this other error:

F:/Documents/QT Projects/QListView_test/main.cpp:10: error: no matching function for call to 'QListView::setItemDelegate(ListDelegate&)'
c:\Qt\2009.05\qt\include\QtGui/../../src/gui/itemviews/qabstractitemview.h:135: note: candidates are: void QAbstractItemView::setItemDelegate(QAbstractItemDelegate*)

F:/Documents/QT Projects/QListView_test/main.cpp:10: error: no matching function for call to 'QListView::setItemDelegate(ListDelegate&)'
c:\Qt\2009.05\qt\include\QtGui/../../src/gui/itemviews/qabstractitemview.h:135: note: candidates are: void QAbstractItemView::setItemDelegate(QAbstractItemDelegate*)

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Im trying to understand, doing my best. Thanks for your help.