how to put a Pixmap in a qwtplot?

[jackajack01]

hello

I wonder how I can put a QPixmap in a QwtPlot, this can be done?

I just need to zoom to an area of ​​the QPixmap. And with the function of QwtPlot Zoomer is easy.

QwtPlotZoomer* zoomer = new MyZoomer(canvas());
zoomer->setMousePattern(QwtEventPattern::MouseSelect2,
Qt::RightButton, Qt::ControlModifier);
zoomer->setMousePattern(QwtEventPattern::MouseSelect3,
Qt::RightButton);

if not can I have another way to zoom to QPixmap?

thanks

[Uwe]

How is your pixmap related to plot coordinates ?

Uwe

[jackajack01]

I do not understand your question.

I have a QPixmap that contains an image. is something like this

image.JPG

and I need to make zoom.

for this reason I put it in a QwtPlot, to use the function:

QwtPlotZoomer* zoomer = new MyZoomer(canvas());
zoomer->setMousePattern(QwtEventPattern::MouseSelect2,
Qt::RightButton, Qt::ControlModifier);
zoomer->setMousePattern(QwtEventPattern::MouseSelect3,
Qt::RightButton);

[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