How to display external legends in Qwt?

[saliemam]

Hi everyone,

I'm trying to create a plot with an external legends. I looked forward some simple instructions which show me the way.

I know that after configuring the legends, I have to use this instruction:

insertLegend(d_legend, QwtPlot::ExternalLegend);

insertLegend(d_legend, QwtPlot::ExternalLegend);

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but I couldn't find a way to show them say in layout. Usually people say use printlegend (or something) to do that. I tried but it was unsuccessful

Would you please send me a simple piece of code which shows how to do that?
Consider that my plot name is Plot and put the legend in a layout named HLayout.

Thanks

[Uwe]

QwtLegend is a widget like any other widget and an external legend can be put into any Qt Layout. This is too trivial for posting code !

Only when you want to print or export your plot together with an external legend to a document you have to calculate the target rectangles for plot and legend on your own. Then use QwtPlot::print + QwtPlot::printLegend.

Uwe

[saliemam]

Uwe,

Thank you for the response,

I'd seen the solution before, but my problem is the is no print or printLegend member in the QwtPlot class (or I am more than beginner that I can not find them ). That's why I reqested a peice of code.

[Uwe]

Then you are using Qwt 6.x and have to check QwtPlotRenderer.

Uwe