Qwt Plot and Qwt Plot Axis Problem

[slymnkbdyi]

I want to do a date-time axis for video player time line.I used QwtPlotPanner for panning , QwtPlotMagnifier for zooming, set axis scale for zoom scale .it is working but axis show hours of other days while zoom-out.

QwtPlotPanner *panner = new QwtPlotPanner( canvas());
QwtPlotMagnifier *magnifier = new mag( canvas() );
QwtScaleDraw *scaleDraw =new TimeScaleDraw("hh:mm");
QwtDateScaleEngine *scaleEngine = new QwtDateScaleEngine( timeSpec );
QwtPlot::setAxisAutoScale(xTop,false);
setAxisScale( QwtPlot::xTop, QwtDate::toDouble(startDate),QwtDate::toDouble(endDate ));
e.g :

setaxisscale min : 23.04.2018 00:00:00
setaxisscale max 23.04.2018 23:59:59

but ı see 25.04.2018 12:45:21 like this after zoom out

before zoom out:

after zoom out :

Can you help me? thank you

[SGaist]

Hi,

That's a question you should bring to the authors of Qwt. Their mailing list is here.

[slymnkbdyi]

thank you. how to ask question this mailing list. i try it but ı cant this .

[SGaist]

Did you subscribe to the mailing list ?

[slymnkbdyi]

ı asked question . thank you .

https://sourceforge.net/p/qwt/mailman/qwt-interest/thread/9d6594d5-af15-280a-01d3-052987ce1e82%40gmail.com/#msg36304335