QWTPlotZoomer zoom in-out signal

[horizonQt]

Can I produce a signal when I zoom in and zoom out? I want to stop the live data flow when the first zoom is applied and to continue the data flow when the zoom is restored. Currently I do this with a button.

[SGaist]

Hi,

You could use the zoomed signal to know when things have changed.

Hope it helps.

[horizonQt]

@SGaist no. ı couldnt. can you help me ? pls

[jsulm]

@horizonQt said in QWTPlotZoomer zoom in-out signal:

ı couldnt

Why not? What is the problem?

[horizonQt]

@jsulm
connect(zoomer, &QwtPlotZoomer::zoomed, [=](const QRectF& rect){
qDebug() << "Zoomed:" << rect;

if (zoomer->zoomRectIndex() ==0 ) {
    qDebug() << "Max stack depth reached. Resetting to initial state.";

    // İlk haline geri dön
    zoomer->setZoomBase();
}

});

The chart auto-scales before zooming in and everything works normally. When setzoombase is used, it zooms out to the setAxisScale values I used when I created the chart. How can I solve this?

[horizonQt]

@horizonQt I solve it. setAxisAutoScale worked for me