QAbstractExtensionFactory 类

The QAbstractExtensionFactory class provides an interface for extension factories in Qt Designer . 更多...

头：	#include <QAbstractExtensionFactory>
CMake:	find_package(Qt6 REQUIRED COMPONENTS Designer) target_link_libraries(mytarget PRIVATE Qt6::Designer)
qmake:	QT += designer
继承者：	QExtensionFactory

所有成员列表，包括继承成员

公共函数

virtual	~QAbstractExtensionFactory ()
virtual QObject *	extension (QObject * object , const QString & iid ) const = 0

详细描述

QAbstractExtensionFactory is not intended to be instantiated directly; use the QExtensionFactory 代替。

在 Qt Designer , extension factories are used to look up and create named extensions as 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.

另请参阅 QExtensionFactory and QExtensionManager .

成员函数文档编制

`[virtual noexcept]` QAbstractExtensionFactory:: ~QAbstractExtensionFactory ()

Destroys the extension factory.

`[pure virtual]` QObject QAbstractExtensionFactory:: extension ( QObject object , const QString & iid ) const

Returns the extension specified by iid 为给定 object .