RichTextBoxArray.QueryAccessibilityHelp 事件

定义

AccessibleObject 为辅助功能应用程序提供帮助时发生。Occurs when an AccessibleObject is providing Help to accessibility applications.

public:
 event System::Windows::Forms::QueryAccessibilityHelpEventHandler ^ QueryAccessibilityHelp;
public event System.Windows.Forms.QueryAccessibilityHelpEventHandler QueryAccessibilityHelp;
member this.QueryAccessibilityHelp : System.Windows.Forms.QueryAccessibilityHelpEventHandler 
Public Custom Event QueryAccessibilityHelp As QueryAccessibilityHelpEventHandler 
Public Event QueryAccessibilityHelp As QueryAccessibilityHelpEventHandler 

事件类型

QueryAccessibilityHelpEventHandler

注解

你应使用 HelpProvider 类,使用户能够通过按 F1 键来调用辅助性对象上的帮助。You should use the HelpProvider class to enable users to invoke Help on your accessible object by pressing the F1 key. HelpProvider提供了中的完整信息 QueryAccessibilityHelpEventArgsThe HelpProvider gives you complete information in the QueryAccessibilityHelpEventArgs.

有关如何处理事件的详细信息,请参阅 处理和引发事件For more information about how to handle events, see Handling and Raising Events.

备注

Microsoft.VisualBasic.Compatibility.VB6 命名空间中的函数和对象用于工具从 Visual Basic 6.0 升级到 Visual Basic。Functions and objects in the Microsoft.VisualBasic.Compatibility.VB6 namespace are provided for use by the tools for upgrading from Visual Basic 6.0 to Visual Basic. 多数情况下,这些函数和对象可再现 .NET Framework 中其他命名空间的功能。In most cases, these functions and objects duplicate functionality that you can find in other namespaces in the .NET Framework. 只有当 Visual Basic 6.0 代码模型与 .NET Framework 实现有显著区别时,才必须使用这些函数和对象。They are necessary only when the Visual Basic 6.0 code model differs significantly from the .NET Framework implementation.

适用于

另请参阅