Qwt User's Guide 6.0.2

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Public Member Functions
QwtLegendItemManager Class Reference

`#include <qwt_legend_itemmanager.h>`

Inheritance diagram for QwtLegendItemManager:
[legend]

List of all members.

## Public Member Functions
| QwtLegendItemManager ()
virtual | ~QwtLegendItemManager ()
virtual void | drawLegendIdentifier (QPainter *, const QRectF &) const
virtual QWidget * | legendItem () const =0
virtual void | updateLegend (QwtLegend *legend) const =0

## Detailed Description

Abstract API to bind plot items to the legend.

## Member Function Documentation

virtual void QwtLegendItemManager::drawLegendIdentifier | ( | QPainter * | ,
|  | const QRectF & |
| ) |  | const
| inline virtual

QwtLegendItem can display an icon-identifier followed by a text. The icon helps to identify a plot item on the plot canvas and depends on the type of information, that is displayed.

The default implementation paints nothing.

Reimplemented in QwtPlotCurve, QwtPlotIntervalCurve, QwtPlotMarker, and QwtPlotHistogram.

virtual QWidget* QwtLegendItemManager::legendItem | ( |  | ) | const
| pure virtual

Allocate the widget that represents the item on the legend

Returns:
  Allocated widget

See also:
  updateLegend() QwtLegend()

Implemented in QwtPlotItem.

virtual void QwtLegendItemManager::updateLegend | ( | QwtLegend * | legend | ) | const
| pure virtual

Update the widget that represents the item on the legend

Parameters:

  legend | Legend

See also:
  legendItem()

Implemented in QwtPlotCurve, QwtPlotItem, and QwtPlotMarker.