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39
40#include "qstyleplugin.h"
41#include "qstyle.h"
42
43QT_BEGIN_NAMESPACE
44
45/*!
46 \class QStylePlugin
47 \brief The QStylePlugin class provides an abstract base for custom QStyle plugins.
48
49 \ingroup plugins
50 \inmodule QtWidgets
51
52 QStylePlugin is a simple plugin interface that makes it easy
53 to create custom styles that can be loaded dynamically into
54 applications using the QStyleFactory class.
55
56 Writing a style plugin is achieved by subclassing this base class,
57 reimplementing the pure virtual create() function, and
58 exporting the class using the Q_PLUGIN_METADATA() macro.
59
60 \snippet qstyleplugin/main.cpp 0
61
62 The json metadata file \c mystyleplugin.json for the plugin needs
63 to contain information about the names of the styles the plugins
64 supports as follows:
65
66 \quotefile qstyleplugin/mystyleplugin.json
67
68 See \l {How to Create Qt Plugins} for details.
69
70 \sa QStyleFactory, QStyle
71*/
72
73/*!
74 \fn QStyle *QStylePlugin::create(const QString& key)
75
76 Creates and returns a QStyle object for the given style \a key.
77 If a plugin cannot create a style, it should return 0 instead.
78
79 The style key is usually the class name of the required
80 style. Note that the keys are case insensitive. For example:
81
82 \snippet qstyleplugin/main.cpp 1
83*/
84
85/*!
86 Constructs a style plugin with the given \a parent.
87
88 Note that this constructor is invoked automatically by the
89 moc generated code that exports the plugin, so there is no need for calling it
90 explicitly.
91*/
92QStylePlugin::QStylePlugin(QObject *parent)
93 : QObject(parent)
94{
95}
96
97/*!
98 Destroys the style plugin.
99
100 Note that Qt destroys a plugin automatically when it is no longer
101 used, so there is no need for calling the destructor explicitly.
102*/
103QStylePlugin::~QStylePlugin()
104{
105}
106
107QT_END_NAMESPACE
108
109#include "moc_qstyleplugin.cpp"
110

source code of qtbase/src/widgets/styles/qstyleplugin.cpp