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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

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** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the documentation of the Qt Toolkit.

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/*!

    \headerfile <QtPlugin>

    \title Macros for Defining Plugins

    \brief The <QtPlugin> header files defines macros for defining plugins.

    \sa {How to Create Qt Plugins}

*/

/*!

    \macro Q_DECLARE_INTERFACE(ClassName, Identifier)

    \relates <QtPlugin>

    This macro associates the given \a Identifier (a string literal)

    to the interface class called \a ClassName. The \a Identifier must

    be unique. For example:

    \snippet examples/tools/plugandpaint/interfaces.h 3

    This macro is normally used right after the class definition for

    \a ClassName, in a header file. See the

    \l{tools/plugandpaint}{Plug & Paint} example for details.

    If you want to use Q_DECLARE_INTERFACE with interface classes

    declared in a namespace then you have to make sure the Q_DECLARE_INTERFACE

    is not inside a namespace though. For example:

    \snippet doc/src/snippets/code/doc_src_qplugin.qdoc 0

    \sa Q_INTERFACES(), Q_EXPORT_PLUGIN2(), {How to Create Qt Plugins}

*/

/*!

    \macro Q_EXPORT_PLUGIN(ClassName)

    \relates <QtPlugin>

    \obsolete

    Use Q_EXPORT_PLUGIN2() instead. This macro is equivalent to

    Q_EXPORT_PLUGIN2(\a ClassName, \a ClassName).

*/

/*!

    \macro Q_EXPORT_PLUGIN2(PluginName, ClassName)

    \relates <QtPlugin>

    \since 4.1

    \keyword Q_EXPORT_PLUGIN2

    This macro exports the plugin class \a ClassName for the plugin specified

    by \a PluginName. The value of \a PluginName should correspond to the

    \l{qmake Variable Reference#TARGET}{TARGET} specified in the plugin's

    project file.

    There should be exactly one occurrence of this macro in the source code

    for a Qt plugin, and it should be used where the implementation is written

    rather than in a header file.

    Example:

    \snippet doc/src/snippets/code/doc_src_qplugin.qdoc 1

    See the \l{tools/plugandpaint}{Plug & Paint} example for details.

    \sa Q_DECLARE_INTERFACE(), {How to Create Qt Plugins}

*/

/*!

    \macro Q_IMPORT_PLUGIN(PluginName)

    \relates <QtPlugin>

    This macro imports the plugin named \a PluginName, corresponding

    to the \l{qmake Variable Reference#TARGET}{TARGET} specified in the

    plugin's project file.

    Inserting this macro into your application's source code will allow

    you to make use of a static plugin.

    Example:

    \snippet doc/src/snippets/code/doc_src_qplugin.qdoc 2

    Static plugins must also be included by the linker when your

    application is built. For Qt's predefined plugins,

    you can use the \c QTPLUGIN to add

    the required plugins to your build. For example:

    \snippet doc/src/snippets/code/doc_src_qplugin.qdoc 3

    \sa {Static Plugins}, {How to Create Qt Plugins}, {Using qmake}

*/

/*!

    \macro Q_EXPORT_STATIC_PLUGIN(ClassName)

    \relates <QtPlugin>

    \internal

*/