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I’m programming in Qt and I need to draw a curve which is open and fill it with a brush color.
I don’t want it to be closed like a polygon.
Considering my curve is a sinusoid, also I want to fill only the upper half of the curve (the parts above the X axis)
You can use
QPainterPath, here is documentation link. QPainterPath hasquadToandcubicTomethod which can draw curve.Documentation also has some nice example code which behaves as you are lookig for