Re: Draw text on top of both canvas and plot background?

[Uwe R. <Uwe...@ti...>]

Hi Elvis,

> Hope that makes it more clear.

That doesn't answer my question, but maybe all you want to do is:

class YourScaleDraw : public QwtScaleDraw
{
     ....

     QwtText label( double value ) const override
     {
         auto txt = QLocale().toString( value );

         const auto ticks = scaleDiv().ticks[ QwtScaleDiv::MajorTick ];
         if ( !ticks.empty() && value == ticks.last() )
         {
             txt += "\nUnit";
         }

         return txt;
     }
};

plot->setAxisScaleDraw( QwtPlot::xTop, new YourScaleDraw() );

Uwe