How to set boundary for QwtPlotMarker ?

[npatil15]

Thanks Uwe,

It helps and added a knowledge.
Where as I have added small change in my code and it works.
As the left line has issue while working, so I have added +1 to the scale which add every time and not get hidden on deep scroll out

m_line[0]->setValue(QPoint(m_plot->invTransform(QwtPlot::xBottom, m_plot->transform(QwtPlot::xBottom, m_grid->xScaleDiv().interval().minValue())+20)+1,0));

m_line[0]->setValue(QPoint(m_plot->invTransform(QwtPlot::xBottom, m_plot->transform(QwtPlot::xBottom, m_grid->xScaleDiv().interval().minValue())+20)+1,0));

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