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QwtDialNeedle(3)               Qwt User's Guide               QwtDialNeedle(3)


QwtDialNeedle -


#include <qwt_dial_needle.h> Inherited by QwtCompassMagnetNeedle, QwtCompassWindArrow, and QwtDialSimpleNeedle. Public Member Functions QwtDialNeedle () virtual ~QwtDialNeedle () virtual void draw (QPainter *painter, const QPoint ¢er, int length, double direction, QPalette::ColorGroup cg=QPalette::Active) const =0 const QPalette & palette () const virtual void setPalette (const QPalette &) Static Protected Member Functions static void drawKnob (QPainter *, const QPoint &pos, int width, const QBrush &, bool sunken) Detailed Description Base class for needles that can be used in a QwtDial. QwtDialNeedle is a pointer that indicates a value by pointing to a specific direction. Qwt is missing a set of good looking needles. Contributions are very welcome. See also: QwtDial, QwtCompass Member Function Documentation virtual void QwtDialNeedle::draw (QPainter *painter, const QPoint ¢er, intlength, doubledirection, QPalette::ColorGroupcg = QPalette::Active) const [pure virtual] Draw the needle Parameters: painter Painter center Center of the dial, start position for the needle length Length of the needle direction Direction of the needle, in degrees counter clockwise cg Color group, used for painting Implemented in QwtCompassWindArrow, QwtCompassMagnetNeedle, and QwtDialSimpleNeedle. const QPalette & QwtDialNeedle::palette () const Returns: the palette of the needle. void QwtDialNeedle::setPalette (const QPalette &palette) [virtual] Sets the palette for the needle. Parameters: palette New Palette Author Generated automatically by Doxygen for Qwt User's Guide from the source code. Version 5.2.3 Tue Nov 20 2012 QwtDialNeedle(3)

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