---
name: "QwtLegendButton"
section: "3"
platform: "linux"
package: "libqwt-doc"
version: "4.2.0-6"
release: "Debian 6.0 (Squeeze)"
platforms: ["linux"]
url: "https://new.carta.tech/QwtLegendButton"
---

# QwtLegendButton(3)

## NAME

QwtLegendButton -

## SYNOPSIS

Inherits **QwtPushButton**, and **QwtLegendItem**.

## Detailed Description

A legend button.

QwtLegendButton represents a curve on a legend. It displays an curve identifier with an explaining text. The identifier might be a combination of curve symbol and line.

**See also:**

**QwtLegend**, **QwtCurve**

Definition at line 99 of file qwt\_legend.h.

### Public Member Functions

**QwtLegendButton** (QWidget \*parent=0, const char \*name=0)\
 **QwtLegendButton** (const **QwtSymbol** &, const QPen &, const QString &, QWidget \*parent=0, const char \*name=0)\
 virtual void **setTitle** (const QString &)\
 virtual QString **title** () const\

### Protected Member Functions

virtual **QwtText** \* **titleText** () const\
 virtual void **updateItem** ()\
 virtual void **updateIconset** ()\

## Constructor & Destructor Documentation

### QwtLegendButton::QwtLegendButton (QWidget \* parent = `0`, const char \* name = `0`)

**Parameters:**

*parent* Parent widget \
 *name* Widget name

Definition at line 216 of file qwt\_legend.cpp.

### QwtLegendButton::QwtLegendButton (const QwtSymbol & symbol, const QPen & curvePen, const QString & text, QWidget \* parent = `0`, const char \* name = `0`)

**Parameters:**

*symbol* Curve symbol \
 *curvePen* Curve pen \
 *text* Button text \
 *parent* Parent widget \
 *name* Widget name

Definition at line 229 of file qwt\_legend.cpp.

## Member Function Documentation

### void QwtLegendButton::setTitle (const QString & title)` [virtual]`

Set the title of the button

**Parameters:**

*title* New title

**See also:**

**QwtLegendButton::title**

Implements **QwtLegendItem**.

Definition at line 277 of file qwt\_legend.cpp.

### QString QwtLegendButton::title () const` [virtual]`

**Returns:**

The button title

**See also:**

**QwtLegendButton::setTitle**.

Implements **QwtLegendItem**.

Definition at line 286 of file qwt\_legend.cpp.

### QwtText \* QwtLegendButton::titleText () const` [protected, virtual]`

**Returns:**

The item title

**See also:**

**QwtLegendButton::setTitle**.

Implements **QwtLegendItem**.

Definition at line 295 of file qwt\_legend.cpp.

References QwtPushButton::alignment(), QwtText::makeText(), and QwtPushButton::usedTextFormat().

### void QwtLegendButton::updateIconset ()` [protected, virtual]`

Update the iconset according to the current identifier properties Definition at line 255 of file qwt\_legend.cpp.

References QwtLegendItem::drawIdentifier().

Referenced by updateItem().

### void QwtLegendButton::updateItem ()` [protected, virtual]`

Update the item.

Reimplemented from **QwtLegendItem**.

Definition at line 247 of file qwt\_legend.cpp.

References updateIconset().

## Author

Generated automatically by Doxygen for Qwt User's Guide from the source code.