QAbstractExtensionManager Class

The QAbstractExtensionManager class provides an interface for extension managers in Qt Designer. More...

Header: #include <QAbstractExtensionManager>
CMake: find_package(Qt6 REQUIRED COMPONENTS Designer)
target_link_libraries(mytarget PRIVATE Qt6::Designer)
qmake: QT += designer
Inherited By:


Public Functions

virtual ~QAbstractExtensionManager()
virtual QObject *extension(QObject *object, const QString &iid) const = 0
virtual void registerExtensions(QAbstractExtensionFactory *factory, const QString &iid) = 0
virtual void unregisterExtensions(QAbstractExtensionFactory *factory, const QString &iid) = 0

Detailed Description

QAbstractExtensionManager is not intended to be instantiated directly; use the QExtensionManager instead.

In Qt Designer, extension are not created until they are required. For that reason, when implementing a custom extension, you must also create a QExtensionFactory, i.e a class that is able to make an instance of your extension, and register it using Qt Designer's extension manager.

When an extension is required, Qt Designer's extension manager will run through all its registered factories calling QExtensionFactory::createExtension() for each until the first one that is able to create the requested extension for the selected object, is found. This factory will then make an instance of the extension.

See also QExtensionManager and QExtensionFactory.

Member Function Documentation

[virtual noexcept] QAbstractExtensionManager::~QAbstractExtensionManager()

Destroys the extension manager.

[pure virtual] QObject *QAbstractExtensionManager::extension(QObject *object, const QString &iid) const

Returns the extension, specified by iid, for the given object.

[pure virtual] void QAbstractExtensionManager::registerExtensions(QAbstractExtensionFactory *factory, const QString &iid)

Register the given extension factory with the extension specified by iid.

[pure virtual] void QAbstractExtensionManager::unregisterExtensions(QAbstractExtensionFactory *factory, const QString &iid)

Unregister the given factory with the extension specified by iid.

© 2024 The Qt Company Ltd. Documentation contributions included herein are the copyrights of their respective owners. The documentation provided herein is licensed under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. Qt and respective logos are trademarks of The Qt Company Ltd. in Finland and/or other countries worldwide. All other trademarks are property of their respective owners.