QAbstractExtensionFactory Class Reference
^{^{[

QtDesigner

module]}}

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

方法

__init__ ( self )
__init__ ( self , QAbstractExtensionFactory)
QObject extension ( self , QObject object , QString iid )

详细描述

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

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 使用 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.

方法文档编制

QAbstractExtensionFactory.init ( self )

QAbstractExtensionFactory.init ( self , QAbstractExtensionFactory )

QObject QAbstractExtensionFactory.extension ( self , QObject object , QString iid )

This method is abstract and should be reimplemented in any sub-class.

Returns the extension specified by iid 为给定 object .

QAbstractExtensionFactory Class Reference [ QtDesigner module]

方法