AxHost.QueryAccessibilityHelp 事件

定义

AxHost 类不支持 QueryAccessibilityHelp 事件。The QueryAccessibilityHelp event is not supported by the AxHost class.

public:
 event System::Windows::Forms::QueryAccessibilityHelpEventHandler ^ QueryAccessibilityHelp;
[System.ComponentModel.Browsable(false)]
public event System.Windows.Forms.QueryAccessibilityHelpEventHandler QueryAccessibilityHelp;
member this.QueryAccessibilityHelp : System.Windows.Forms.QueryAccessibilityHelpEventHandler 
Public Custom Event QueryAccessibilityHelp As QueryAccessibilityHelpEventHandler 
属性

注解

如果尝试添加或移除QueryAccessibilityHelp事件的处理程序NotSupportedException ,则会引发。If you attempt to add or remove a handler for the QueryAccessibilityHelp event, a NotSupportedException is thrown. AxHost类不支持派生自Control类的事件。The events derived from the Control class are not supported by the AxHost class. 创建AxHost包装时,ActiveX 控件公开的事件是应使用的事件。The events exposed by the ActiveX control when the AxHost wrapper is created are the events that should be used.

适用于