Mouse Interactive Plots

[myzinsky]

Is it possible to have a mouse interaction with a curve?

eg. when i click on a curve some background information is shown in a qt textfield outside of the plot?

thanks and regards
myzinsky

[sonulohani]

yup you can do it. Just place the label on the plot and you can able to do, what you wanna do.......

[myzinsky]

in which example i can have a look?

i have a QwtPlotIntervalCurve!

I want to have each <===> in my plot clickable

phaseDiagram.jpg

[Uwe]

Is it possible to have a mouse interaction with a curve?

You can install an event filter for the plot canvas to handle mouse events - or simply use QwtPlotPicker what does the same ( translating the mouse position into plot coordinates ). Instead of connecting the selected position to a label you could also use the tracker mode of the picker. By overloading QwtPlotPicker::trackerTextF and QwtPlotPicker::trackerText you can modify the text, that is displayed for a specific position.

But identifying how the position is related to the curve ( or any other item on the plot ) needs to be done in application code.

Most Qwt examples use the tracker mode of the picker f.e. bode or spectrogram.

Uwe