有大佬救下qt这里是为啥啊

#include "histogramview.h"
#include <QPainter>
#include <QAbstractItemView>
HistogramView::HistogramView(QWidget parent)
    :QAbstractItemView(parent)
{

}

为什么显示

error: prototype for 'HistogramView::HistogramView(QWidget)' does not match any in class 'HistogramView'
 HistogramView::HistogramView(QWidget parent)
 ^~~~~~~~~~~~~

#ifndef HISTOGRAMVIEW_H
#define HISTOGRAMVIEW_H

#include <QAbstractItemView>
#include <QItemSelectionModel>
#include <QRegion>
#include <QMouseEvent>

class HistogramView : public QAbstractItemView
{
    Q_OBJECT

error: candidates are: HistogramView::HistogramView(HistogramView&&)
 class HistogramView : public QAbstractItemView
       ^~~~~~~~~~~~~

HistogramView::HistogramView(QWidget parent)这里，parent应该是指针，这样

HistogramView::HistogramView(QWidget* parent)

HistogramView::HistogramView(QWidget parent)中的parent应该是一个指针 ，在它前面加上*号就可以了