Equivalents for QwtScale::setBaselineDist and QwtPlotCurve::Spline in qwt5.0.2 ?

[vheinitz]

Hello,
I miss some classes, methods, enums in Qwt5.0.2
-QwtPlotCurve::Spline

-QwtScale was obviousely replaced by QwtScaleWidget, is there a substitute for
QwtScale::setBaselineDist ?

Thank your for any hints!