Error - RtlWerpReportException failed with status code :-1073741823. Will try to launch the process

前言

Error - RtlWerpReportException failed with status code :-1073741823. Will try to launch the process directly
当这个问题出现时，我当时一脸懵逼，网上也有相关整理，我看了几篇，得出结论是内存错误。删除了不该删除的，然后再去访问该内存。
在声明的时候 将其QRubberBand* rubberBand = Q_NULLPTR;就可以了。或者构造函数时将其先置空。

代码如下：

#ifndef DEMODOUBLEBUFFWIDGET_H
#define DEMODOUBLEBUFFWIDGET_H

#include <QWidget>
#include <QMouseEvent>
#include <QPaintEvent>
#include <QRubberBand>
class DemoDoubleBuffWidget : public QWidget
{
    Q_OBJECT
public:
    explicit DemoDoubleBuffWidget(QWidget *parent = nullptr);

signals:

public slots:

protected:
    void mousePressEvent(QMouseEvent*);
    void mouseMoveEvent(QMouseEvent*);
    void mouseReleaseEvent(QMouseEvent*);
   // void paintEvent(QPaintEvent*);
private:
    QPoint m_startPoint;
    QRubberBand* rubberBand = Q_NULLPTR;
};

#endif // DEMODOUBLEBUFFWIDGET_H

#include "demodoublebuffwidget.h"
#include <QPainter>
#include <QDebug>
#include <QRect>
DemoDoubleBuffWidget::DemoDoubleBuffWidget(QWidget *parent)
    : QWidget(parent)
{
}

void DemoDoubleBuffWidget::mousePressEvent(QMouseEvent * event)
{
    m_startPoint = event->pos();
    if (!rubberBand)
        rubberBand = new QRubberBand(QRubberBand::Rectangle, this);
    rubberBand->setGeometry(QRect(m_startPoint, QSize(10,10)));
    rubberBand->show();
}

void DemoDoubleBuffWidget::mouseMoveEvent(QMouseEvent *event)
{
    rubberBand->setGeometry(QRect(m_startPoint, event->pos()).normalized());
}

void DemoDoubleBuffWidget::mouseReleaseEvent(QMouseEvent *event)
{
    rubberBand->hide();
}

//void DemoDoubleBuffWidget::paintEvent(QPaintEvent *event)
//{
//    qDebug() << __FUNCTION__;
//}

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博客二常见Qt错误