How to get the x an y corrdinates from mouse postion

Hi,

I am trying the realtime_plot example how can I set the
mouseTracking to true so that I can get he mouse postion which can be passed to the Qwtplotpicker to get the trackText and can be outputed to a status bar

But even If I have set the mouse tracking(setMouseTracking(true)) to true in the IncrementalPlot I am not able to get the mouse move event in the virtual event()(Qwtplot) which I have rewritten in incremental plot.

I only able to get this event only when I click the left mouse button and move it.

Please let me know how to get the mouse event even when it is not clicked.

Mouse tracking has to be enabled for the viewport, I assume QwtPlot has one...

With picker->setDisplayMode(QwtPicker::AlwaysOn) the positions is always displayed.

If you want to see that the QwtPlotPicker::moved() signal is emitted - even when the mouse is not pressed - there are many different ways to do it. Probably the most easiest one is to overload QwtPlotPicker::widgetMouseMoveEvent this way:

Code:

---

YourPicker::widgetMouseMoveEvent(QMouseEvent *me)
{
   QwtPlotPicker::widgetMouseMoveEvent(me);
   emit moved(invTransform(me->pos));
}

---

HTH,
Uwe