QwtDialNeedle类 参考

可用于 QwtDial 的指针基类 更多...

#include <qwt_dial_needle.h>

类 QwtDialNeedle 继承关系图:

Public 成员函数
	QwtDialNeedle ()
	Constructor
virtual	~QwtDialNeedle ()
	Destructor
virtual void	setPalette (const QPalette &)
	Set the palette for the needle
const QPalette &	palette () const
	Return the palette of the needle
virtual void	draw (QPainter *, const QPointF &center, double length, double direction, QPalette::ColorGroup=QPalette::Active) const
	Draw the needle

Protected 成员函数
virtual void	drawNeedle (QPainter *painter, double length, QPalette::ColorGroup colorGroup) const =0
	Draw the needle
virtual void	drawKnob (QPainter *, double width, const QBrush &, bool sunken) const
	Draw the knob

详细描述

可用于 QwtDial 的指针基类

构造及析构函数说明

QwtDialNeedle()

QwtDialNeedle::QwtDialNeedle

(

)

Constructor

构造函数

~QwtDialNeedle()

QwtDialNeedle::~QwtDialNeedle ( )

virtual

Destructor

析构函数

成员函数说明

draw()

void QwtDialNeedle::draw ( QPainter *  painter, const QPointF &  center, double  length, double  direction, QPalette::ColorGroup  colorGroup = QPalette::Active  ) const

virtual

Draw the needle

绘制指针

drawNeedle()

virtual void QwtDialNeedle::drawNeedle ( QPainter *  painter, double  length, QPalette::ColorGroup  colorGroup  ) const

protectedpure virtual

Draw the needle

The origin of the needle is at position (0.0, 0.0 ) pointing in direction 0.0 ( = east ).

The painter is already initialized with translation and rotation.

参数

painter	Painter
length	Length of the needle
colorGroup	Color group, used for painting

参见

setPalette(), palette()

在 QwtDialSimpleNeedle, QwtCompassMagnetNeedle , 以及 QwtCompassWindArrow 内被实现.

palette()

const QPalette & QwtDialNeedle::palette

(

)

const

Return the palette of the needle

返回指针的调色板

setPalette()

void QwtDialNeedle::setPalette ( const QPalette &  palette )

virtual

Set the palette for the needle

设置指针的调色板

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该类的文档由以下文件生成:

• /home/runner/work/QWT/QWT/src/plot/qwt_dial_needle.h
• /home/runner/work/QWT/QWT/src/plot/qwt_dial_needle.cpp