QwtDialNeedle(3) Qwt User's Guide QwtDialNeedle(3)NAMEQwtDialNeedle-
SYNOPSIS
#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
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code.
Version 5.2.3 Tue Nov 20 2012 QwtDialNeedle(3)
