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# QStylePlugin Class Reference

The QStylePlugin class provides an abstract base for custom QStyle plugins. More...

`#include <qstyleplugin.h>`

List of all member functions.

## Public Members

- QStylePlugin ()
- ~QStylePlugin ()
- virtual QStringList keys () const = 0
- virtual QStyle * create ( const QString & key ) = 0

## Detailed Description

The QStylePlugin class provides an abstract base for custom QStyle plugins.

The style plugin is a simple plugin interface that makes it easy to create custom styles that can be loaded dynamically into applications with a QStyleFactory.

Writing a style plugin is achieved by subclassing this base class, reimplementing the pure virtual functions keys() and create(), and exporting the class with the `Q_EXPORT_PLUGIN` macro. See the plugins documentation for an example.

See also Plugins.

## Member Function Documentation

### QStylePlugin::QStylePlugin ()

Constructs a style plugin. This is invoked automatically by the `Q_EXPORT_PLUGIN` macro.

### QStylePlugin::~QStylePlugin ()

Destroys the style plugin.

You never have to call this explicitly. Qt destroys a plugin automatically when it is no longer used.

### QStyle * QStylePlugin::create ( const QString & key )`[pure virtual]`

Creates and returns a QStyle object for the style key key. The style key is usually the class name of the required style.

See also keys().

### QStringList QStylePlugin::keys () const`[pure virtual]`

Returns the list of style keys this plugin supports.

These keys are usually the class names of the custom styles that are implemented in the plugin.

See also create().

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