How to subclass in Qt? - c++

Question

I'd like to subclass QListWidgetItem, but I don't get what I'm doing wrong.
I subclassed QListWidget without any trouble using the same principles.
This is my header file :
#ifndef LSPROLISTITEM_H
#define LSPROLISTITEM_H
#include <QObject>
#include <QListWidgetItem>
class LsproListItem : public QListWidgetItem
{
Q_OBJECT
public:
explicit LsproListItem(QString &text, QObject *parent = 0);
signals:
public slots:
};
#endif // LSPROLISTITEM_H
and this is my cpp file :
#include "lsprolistitem.h"
#include <QListWidgetItem>
LsproListItem::LsproListItem(QString & text, QObject *parent) :
QListWidgetItem(text, parent)
{
}
I don't get the argument from my custom constructor, to create an object based on QListWidgetItem..
I try to create is this way :
LsproListItem *simpleText = new LsproListItem("Lorem ipsum");
But this fails with :
appcms.cpp: error : no matching constructor for initialization of 'LsproListItem'
LsproListItem *simpleText = new LsproListItem("Lorem ipsum");
^ ~~~~~~~~~~~~~
lsprolistitem.h:7: candidate constructor (the implicit copy constructor) not viable: no known conversion from 'const char [12]' to 'const LsproListItem' for 1st argument
class LsproListItem : public QListWidgetItem
^
lsprolistitem.h:: candidate constructor not viable: no known conversion from 'const char [12]' to 'QString &' for 1st argument
explicit LsproListItem(QString &text, QObject *parent = 0);
^

Answer 1

Quick solution(not the best): don't use reference:
public:
explicit LsproListItem(QString text, QObject *parent = 0);
//...
LsproListItem::LsproListItem(QString text, QObject *parent) :
Or
public:
explicit LsproListItem( const QString &text, QObject *parent = 0);
//...
LsproListItem::LsproListItem( const QString &text, QObject *parent) :
But there is another mistake. Remove Q_OBJECT macro because QListWidgetItem is not a QObject subclass and you can't use here signal and slots.
To prove: http://qt-project.org/doc/qt-5/qlistwidgetitem.html