how to put a Pixmap in a qwtplot?

[Uwe]

When the pixmap is unrelated to any plot coordinates QwtPlot is not the right solution.

Instead put your Pixmap on a QLabel. You can use a QwtPicker ( works with any type of widget ) if you want to use Qwt classes, but using a QRubberband should do it as well. The rest is about translating the selected rectangle into QPixmap/QImage operations.

Uwe