本文整理汇总了VB.NET中System.Windows.Automation.TextPattern.TextChangedEvent字段的典型用法代码示例。如果您正苦于以下问题：VB.NET TextPattern.TextChangedEvent字段的具体用法？VB.NET TextPattern.TextChangedEvent怎么用？VB.NET TextPattern.TextChangedEvent使用的例子？那么, 这里精选的字段代码示例或许可以为您提供帮助。
在下文中一共展示了TextPattern.TextChangedEvent字段的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的VB.NET代码示例。
示例1: AutomationEventHandler
' Initialize a text changed listener.
' An instance of TextPatternRange will become invalid if
' one of the following occurs:
' 1) The text in the provider changes via some user activity.
' 2) ValuePattern.SetValue is used to programatically change
' the value of the text in the provider.
' The only way the client application can detect if the text
' has changed (to ensure that the ranges are still valid),
' is by setting a listener for the TextChanged event of
' the TextPattern. If this event is raised, the client needs
' to update the targetDocumentRange member data to ensure the
' user is working with the updated text.
' Clients must always anticipate the possibility that the text
' can change underneath them.
Dim onTextChanged As AutomationEventHandler = _
New AutomationEventHandler(AddressOf TextChanged)
Automation.AddAutomationEventHandler( _
TextPattern.TextChangedEvent, targetDocument, TreeScope.Element, onTextChanged)