C++ 没有名为'的成员；setRawData'；在'；QwtPlotCurve'；-将Qt 4.7转换为Qt 5.8

我需要将Qt遗留代码从4.7转换为5.8，我在Qt Creator 4.2.1 Clang 7.0（Apple）64位中有一个编译错误

查看.cpp文件

#include "mpiChartCurve.h"
#include <qwt_plot_curve.h>


mpiChartCurve::mpiChartCurve(QwtPlot *chart_):
    m_chart(chart_),
    m_curve(new QwtPlotCurve())
{
}

mpiChartCurve::~mpiChartCurve()
{
    // be default qwt will delete the curve when it is destroyed
    // only delete the curve when detach is called
}

void mpiChartCurve::detach()
{
    m_curve->detach();

    // hack for now?  qwt doesn't seem to redraw properly until a curve is attached after a detachment, so attach dummy
    QVector<double> x, y;
    m_curve->setRawData(x.constData(), y.constData(), 0); // JDL convert Qt4 to Qt5  BROKE
    m_curve->attach(m_chart);
    m_curve->detach();

    delete m_curve;
    m_curve = 0;
}


void mpiChartCurve::attach()
{
    if (!m_curve)
        return;

    m_curve->setRawData(m_xData.constData(),m_yData.constData(), count()); // JDL convert Qt4 to Qt5  BROKE
    m_curve->attach(m_chart);
}

我在QByteArray的文档中注意到了这一评论

（过时）运算符常量char*（）常量

---

<>我的C++技能很有限，你能看到任何微小的调整，可以把这个从QT4转换成QT5吗？那么什么是替换？

setRawData不是QwtPlotCurve的成员函数。它是QByteArray的成员函数，只接受2个参数。将setRawData更改为setRawSamples，setRawSamples是QwtPlotCurve的成员函数，并接受您要查找的三个参数

固定版本

#include "mpiChartCurve.h"
#include <qwt_plot_curve.h>


mpiChartCurve::mpiChartCurve(QwtPlot *chart_):
    m_chart(chart_),
    m_curve(new QwtPlotCurve())
{
}

mpiChartCurve::~mpiChartCurve()
{
    // be default qwt will delete the curve when it is destroyed
    // only delete the curve when detach is called
}

void mpiChartCurve::detach()
{
    m_curve->detach();

    // hack for now?  qwt doesn't seem to redraw properly until a curve is attached after a detachment, so attach dummy
    QVector<double> x, y;
    m_curve->setRawSamples(x.constData(), y.constData(), 0); // JDL convert Qt4 to Qt5  BROKE
    m_curve->attach(m_chart);
    m_curve->detach();

    delete m_curve;
    m_curve = 0;
}


    void mpiChartCurve::attach()
{
    if (!m_curve)
        return;

    m_curve->setRawSamples(m_xData.constData(),m_yData.constData(), count()); // JDL convert Qt4 to Qt5  BROKE
    m_curve->attach(m_chart);
}

#包括“mpiChartCurve.h”
#包括
mpiChartCurve:：mpiChartCurve（QwtPlot*图表）：
m_图（chart_），
m_曲线（新的QwtPlotCurve（））
{
}
mpiChartCurve:：~mpiChartCurve（）
{
//默认情况下，qwt将在曲线被破坏时删除该曲线
//仅在调用“分离”时删除曲线
}
void mpiChartCurve:：detach（）
{
m_曲线->分离（）；
//哈克现在？qwt似乎并没有正确地重新绘制，直到一个曲线连接后分离，所以连接虚拟
矢量x，y；
m_曲线->setRawSamples（x.constData（），y.constData（），0）；//JDL将Qt4转换为Qt5
m_曲线->附加（m_图表）；
m_曲线->分离（）；
删除m_曲线；
m_曲线=0；
}
void mpiChartCurve:：attach（）
{
if（！m_曲线）
返回；
m_curve->setRawSamples（m_xData.constData（），m_yData.constData（），count（））；//JDL将Qt4转换为Qt5
m_曲线->附加（m_图表）；
}

#include "mpiChartCurve.h"
#include <qwt_plot_curve.h>


mpiChartCurve::mpiChartCurve(QwtPlot *chart_):
    m_chart(chart_),
    m_curve(new QwtPlotCurve())
{
}

mpiChartCurve::~mpiChartCurve()
{
    // be default qwt will delete the curve when it is destroyed
    // only delete the curve when detach is called
}

void mpiChartCurve::detach()
{
    m_curve->detach();

    // hack for now?  qwt doesn't seem to redraw properly until a curve is attached after a detachment, so attach dummy
    QVector<double> x, y;
    m_curve->setRawSamples(x.constData(), y.constData(), 0); // JDL convert Qt4 to Qt5  BROKE
    m_curve->attach(m_chart);
    m_curve->detach();

    delete m_curve;
    m_curve = 0;
}


    void mpiChartCurve::attach()
{
    if (!m_curve)
        return;

    m_curve->setRawSamples(m_xData.constData(),m_yData.constData(), count()); // JDL convert Qt4 to Qt5  BROKE
    m_curve->attach(m_chart);
}