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QwtKnob Class Reference

The Knob Widget. More...

#include <qwt_knob.h>

Inherits QwtSliderBase, and QwtScaleIf.

Inheritance diagram for QwtKnob

Inheritance graph
[legend]
List of all members.

Public Types

enum  Symbol { Line, Dot }

Public Methods

 QwtKnob (QWidget* parent = 0, const char *name = 0)
 ~QwtKnob ()
void setKnobWidth (int w)
void setTotalAngle (double angle)
void setBorderWidth (int bw)

Detailed Description

The Knob Widget.

The QwtKnob widget imitates look and behaviour of a volume knob on a radio. It contains a scale around the knob which is set up automatically or can be configured manually (see QwtScaleIf). Automatic scrolling is enabled when the user presses a mouse button on the scale. For a description of signals, slots and other members, see QwtSliderBase.

knob.gif
See also:
QwtSliderBase and QwtScaleIf for the descriptions of the inherited members.


Constructor & Destructor Documentation

QwtKnob::QwtKnob ( QWidget * parent = 0,
const char * name = 0 )
 

Constructor.

Parameters:
parent   Parent widget
name   Name

QwtKnob::~QwtKnob ( )
 

Destructor.


Member Function Documentation

void QwtKnob::setBorderWidth ( int bw )
 

Set the knob's border width.

Parameters:
bw   new border width

void QwtKnob::setKnobWidth ( int w )
 

Change the knob's width.

The specified width must be >= 5, or it will be clipped.

Parameters:
w   New width

void QwtKnob::setTotalAngle ( double angle )
 

Set the total angle by which the knob can be turned.

Parameters:
angle   Angle in degrees.

The default angle is 270 degrees. It is possible to specify an angle of more than 360 degrees so that the knob can be turned several times around its axis.


The documentation for this class was generated from the following files:
Generated at Thu Dec 14 00:27:17 2000 for Qwt User's Guide by doxygen1.2.3 written by Dimitri van Heesch, © 1997-2000