Mouse cursor position on canvas

Hello,

I'm posting the proper procedure to get the cursor position inside the canvas.

Code:

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canvas()->installEventFilter( this );
// sometimes qobject_cast<QwtPlotCanvas*>(canvas()) might me needed
 
bool PlotView::eventFilter(QObject *obj, QEvent *event)
{
    if (event->type() == QEvent::MouseButtonPress)
    {
        QMouseEvent *mouseEvent = static_cast<QMouseEvent *>(event);
        X = mouseEvent->pos().x;
        invTransform( QwtPlot::xBottom, X);

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