Control.ControlAccessibleObject 類別

定義

提供可供協助工具應用程式使用之控制項的相關資訊。Provides information about a control that can be used by an accessibility application.

public: ref class Control::ControlAccessibleObject : System::Windows::Forms::AccessibleObject
[System.Runtime.InteropServices.ComVisible(true)]
public class Control.ControlAccessibleObject : System.Windows.Forms.AccessibleObject
type Control.ControlAccessibleObject = class
    inherit AccessibleObject
Public Class Control.ControlAccessibleObject
Inherits AccessibleObject
繼承
Control.ControlAccessibleObject
衍生
屬性

範例

下列程式碼範例會CheckBox建立衍生自類別的核取方塊控制項,並為要使用的衍生類別建立自訂。 Control.ControlAccessibleObjectThe following code example creates a check box control that derives from the CheckBox class and creates a custom Control.ControlAccessibleObject for the derived class to use. 衍生的類別MyCheckBox預設Appearance具有的Button ,因此它會顯示為切換按鈕。The derived class, MyCheckBox, has an Appearance of Button by default so it appears as a toggle button. 衍生Control.ControlAccessibleObjectMyCheckBoxControlAccessibleObject類別會覆寫三個屬性,以考慮外觀上的差異。The derived Control.ControlAccessibleObject class, MyCheckBoxControlAccessibleObject, overrides three properties to account for the difference in appearance.

#using <Accessibility.dll>
#using <System.Drawing.dll>
#using <System.dll>
#using <System.Windows.Forms.dll>

using namespace System;
using namespace System::Windows::Forms;
using namespace System::Drawing;

namespace MyCustomControls
{
   public ref class MyCheckBox: public CheckBox
   {
   public:
      MyCheckBox()
      {
         // Make the check box appear like a toggle button.
         this->Appearance = ::Appearance::Button;

         // Center the text on the button.
         this->TextAlign = ContentAlignment::MiddleCenter;

         // Set the AccessibleDescription text.
         this->AccessibleDescription = "A toggle style button.";
      }

   protected:

      // Create an instance of the AccessibleObject
      // defined for the 'MyCheckBox' control
      virtual AccessibleObject^ CreateAccessibilityInstance() override;
   };

   // Accessible Object* for use with the 'MyCheckBox' control.
   private ref class MyCheckBoxAccessibleObject: public Control::ControlAccessibleObject
   {
   public:
      MyCheckBoxAccessibleObject( MyCheckBox^ owner )
         : ControlAccessibleObject( owner )
      {}

      property String^ DefaultAction 
      {
         virtual String^ get() override
         {
            // Return the DefaultAction based upon
            // the state of the control.
            if ( (dynamic_cast<MyCheckBox^>(Owner))->Checked )
            {
               return "Toggle button up";
            }
            else
            {
               return "Toggle button down";
            }
         }
      }

      property String^ Name 
      {
         virtual String^ get() override
         {
            // Return the Text property of the control
            // if the AccessibleName is 0.
            String^ name = Owner->AccessibleName;
            if ( name != nullptr )
            {
               return name;
            }

            return (dynamic_cast<MyCheckBox^>(Owner))->Text;
         }

         virtual void set( String^ value ) override
         {
            ControlAccessibleObject::Name = value;
         }
      }

      property AccessibleRole Role 
      {
         virtual AccessibleRole get() override
         {
            // Since the check box appears like a button,
            // make the Role the same as a button.
            return AccessibleRole::PushButton;
         }
      }
   };

   AccessibleObject^ MyCheckBox::CreateAccessibilityInstance()
   {
      return gcnew MyCheckBoxAccessibleObject( this );
   }
}
using System;
using System.Windows.Forms;
using Accessibility;
using System.Drawing;

namespace MyCustomControls
{
   public class MyCheckBox : CheckBox
   {
      public MyCheckBox()
      {
         // Make the check box appear like a toggle button.
         this.Appearance = Appearance.Button;
         // Center the text on the button.
         this.TextAlign = ContentAlignment.MiddleCenter;
         // Set the AccessibleDescription text.
         this.AccessibleDescription = "A toggle style button.";
      }
      
      // Create an instance of the AccessibleObject 
      // defined for the 'MyCheckBox' control
      protected override AccessibleObject CreateAccessibilityInstance() 
      {
         return new MyCheckBoxAccessibleObject(this);
      }
   }

   // Accessible object for use with the 'MyCheckBox' control.
   internal class MyCheckBoxAccessibleObject : Control.ControlAccessibleObject 
   {
      public MyCheckBoxAccessibleObject(MyCheckBox owner) : base(owner) 
      {
        
      }
               
      public override string DefaultAction 
      {
         get
         {
            // Return the DefaultAction based upon 
            // the state of the control.
            if( ((MyCheckBox)Owner).Checked )
            {
               return "Toggle button up";
            }
            else
            {
               return "Toggle button down";
            }
         }
      }

      public override string Name 
      {
         get 
         {
            // Return the Text property of the control 
            // if the AccessibleName is null.
            string name = Owner.AccessibleName;
            if (name != null) 
            {
               return name;
            }
            return ((MyCheckBox)Owner).Text;
         }
         
         set
         {
            base.Name = value;
         }
      }            
               
      public override AccessibleRole Role 
      {
         get 
         {
            // Since the check box appears like a button,
            // make the Role the same as a button.
            return AccessibleRole.PushButton;
         }
      }
   }
}
Imports System.Windows.Forms
Imports Accessibility
Imports System.Drawing

Namespace MyCustomControls
   Public Class MyCheckBox
      Inherits CheckBox
      
      Public Sub New()
         ' Make the check box appear like a toggle button.
         Me.Appearance = Appearance.Button
         ' Center the text on the button.
         Me.TextAlign = ContentAlignment.MiddleCenter
      End Sub
      
      ' Create an instance of the AccessibleObject 
      ' defined for the 'MyCheckBox' control 
      Protected Overrides Function CreateAccessibilityInstance() _
        As AccessibleObject
         Return New MyCheckBoxAccessibleObject(Me)
      End Function
   End Class
    
   ' Accessible object for use with the 'MyCheckBox' control.
   Friend Class MyCheckBoxAccessibleObject
      Inherits Control.ControlAccessibleObject
      
      Public Sub New(owner As MyCheckBox)
         MyBase.New(owner)
      End Sub
      
      Public Overrides ReadOnly Property DefaultAction() As String
         Get
            ' Return the DefaultAction based upon 
            ' the state of the control. 
            If CType(Owner, MyCheckBox).Checked Then
               Return "Toggle button up"
            Else
               Return "Toggle button down"
            End If
         End Get
      End Property
      
      Public Overrides Property Name() As String
         Get
            ' Return the Text property of the control 
            ' if the AccessibleName is null. 
            Dim accessibleName As String = Owner.AccessibleName
            If (accessibleName IsNot Nothing) Then
               Return accessibleName
            End If
            Return CType(Owner, MyCheckBox).Text
         End Get

         Set
            MyBase.Name = value
         End Set
      End Property
      
      Public Overrides ReadOnly Property Role() As AccessibleRole
         Get
            ' Since the check box appears like a button,
            ' make the Role the same as a button. 
            Return AccessibleRole.PushButton
         End Get
      End Property
   End Class
End Namespace

備註

Windows Forms 具有內建的協助工具支援,並提供應用程式的相關資訊,讓它能夠與協助工具用戶端應用程式搭配使用。Windows Forms has accessibility support built in, and provides information about your application that enables it to work with accessibility client applications. 協助工具用戶端應用程式的範例包括:螢幕放大鏡和檢閱者公用程式、語音輸入公用程式、螢幕小鍵盤、替代輸入裝置,以及鍵盤增強公用程式。Examples of accessibility client applications are: screen enlarger and reviewer utilities, voice input utilities, on-screen keyboards, alternative input devices, and keyboard enhancement utilities. 有時候您會想要提供其他資訊給協助工具用戶端應用程式。Sometimes you will want to provide additional information to accessibility client applications. 有兩種方式可提供這項額外資訊。There are two ways of providing this additional information. 若要為現有的控制項提供有限的協助工具資訊, AccessibleNameAccessibleDescription設定控制項的AccessibleRole 、、 AccessibleDefaultActionDescription和屬性值,這將會報告給協助工具用戶端應用程式。To provide limited accessibility information for existing controls, set the control's AccessibleName, AccessibleDescription, AccessibleDefaultActionDescription, and AccessibleRole property values, which will be reported to accessibility client applications. 或者,如果您需要將更多協助工具資訊包含在控制項中,您可以撰寫自己的AccessibleObject類別,衍生自或Control.ControlAccessibleObject類別。Alternatively, if you require more accessibility information to be included with your control, you can write your own class deriving from the AccessibleObject or Control.ControlAccessibleObject classes. 例如,如果您要撰寫的控制項不是從通用控制項衍生而來,或是您在控制項內需要進行這類作業,則應該藉由Control.ControlAccessibleObject CreateAccessibilityInstance呼叫方法來建立控制項的。For example, if you are writing your own control that is not derived from the common controls or you require such operations as hit testing within your control, you should create a Control.ControlAccessibleObject for your control by calling the CreateAccessibilityInstance method.

注意

如果您覆寫AccessibleObject.GetChild方法,則也必須覆AccessibleObject.GetChildCount寫方法。If you override the AccessibleObject.GetChild method, you must also override the AccessibleObject.GetChildCount method. 若要取得或設定AccessibilityObject屬性,您必須將參考加入與 .NET Framework Accessibility一起安裝的元件。To get or set the AccessibilityObject property, you must add a reference to the Accessibility assembly installed with the .NET Framework.

如需可存取物件的詳細資訊,請參閱 MSDN Library 的<Active Accessibility>一節。For more information about accessible objects, see the Active Accessibility section of the MSDN Library.

建構函式

Control.ControlAccessibleObject(Control)

初始化 Control.ControlAccessibleObject 類別的新執行個體。Initializes a new instance of the Control.ControlAccessibleObject class.

屬性

Bounds

取得可存取物件的位置和大小。Gets the location and size of the accessible object.

(繼承來源 AccessibleObject)
DefaultAction

取得描述物件之預設動作的字串。Gets a string that describes the default action of the object. 並非所有的物件都有預設動作。Not all objects have a default action.

Description

取得 Control.ControlAccessibleObject 的描述。Gets the description of the Control.ControlAccessibleObject.

Handle

取得或設定可存取物件的控制代碼。Gets or sets the handle of the accessible object.

Help

取得物件的用途或物件使用方式的描述。Gets the description of what the object does or how the object is used.

KeyboardShortcut

取得可存取物件的物件快速鍵或便捷鍵 (Access Key)。Gets the object shortcut key or access key for an accessible object.

Name

取得或設定可存取的物件名稱。Gets or sets the accessible object name.

Owner

取得可存取物件的擁有人。Gets the owner of the accessible object.

Parent

取得可存取之物件的父系。Gets the parent of an accessible object.

Role

取得這個可存取之物件的角色。Gets the role of this accessible object.

State

取得這個可存取物件的狀態。Gets the state of this accessible object.

(繼承來源 AccessibleObject)
Value

取得或設定可存取物件的數值。Gets or sets the value of an accessible object.

(繼承來源 AccessibleObject)

方法

CreateObjRef(Type)

建立包含所有相關資訊的物件,這些資訊是產生用來與遠端物件通訊的所需 Proxy。Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.

(繼承來源 MarshalByRefObject)
DoDefaultAction()

執行與這個可存取物件相關的預設動作。Performs the default action associated with this accessible object.

(繼承來源 AccessibleObject)
Equals(Object)

判斷指定的物件是否等於目前的物件。Determines whether the specified object is equal to the current object.

(繼承來源 Object)
GetChild(Int32)

擷取與指定索引相對應的可存取子系。Retrieves the accessible child corresponding to the specified index.

(繼承來源 AccessibleObject)
GetChildCount()

擷取屬於可存取物件的子系數目。Retrieves the number of children belonging to an accessible object.

(繼承來源 AccessibleObject)
GetFocused()

擷取具有鍵盤焦點的物件。Retrieves the object that has the keyboard focus.

(繼承來源 AccessibleObject)
GetHashCode()

做為預設雜湊函式。Serves as the default hash function.

(繼承來源 Object)
GetHelpTopic(String)

取得說明主題的識別項,以及與這個可存取物件相關之通往說明檔的路徑。Gets an identifier for a Help topic and the path to the Help file associated with this accessible object.

GetLifetimeService()

擷取控制這個執行個體存留期 (Lifetime) 原則的目前存留期服務物件。Retrieves the current lifetime service object that controls the lifetime policy for this instance.

(繼承來源 MarshalByRefObject)
GetSelected()

擷取目前選取的子系。Retrieves the currently selected child.

(繼承來源 AccessibleObject)
GetType()

取得目前執行個體的 TypeGets the Type of the current instance.

(繼承來源 Object)
HitTest(Int32, Int32)

擷取位於指定螢幕座標的子物件。Retrieves the child object at the specified screen coordinates.

(繼承來源 AccessibleObject)
InitializeLifetimeService()

取得存留期服務物件,以控制這個執行個體的存留期原則。Obtains a lifetime service object to control the lifetime policy for this instance.

(繼承來源 MarshalByRefObject)
MemberwiseClone()

建立目前 Object 的淺層複本 (Shallow Copy)。Creates a shallow copy of the current Object.

(繼承來源 Object)
MemberwiseClone(Boolean)

建立目前 MarshalByRefObject 物件的淺層複本。Creates a shallow copy of the current MarshalByRefObject object.

(繼承來源 MarshalByRefObject)
Navigate(AccessibleNavigation)

可巡覽到另一個可存取物件。Navigates to another accessible object.

(繼承來源 AccessibleObject)
NotifyClients(AccessibleEvents)

將指定的 AccessibleEvents 告知可及性用戶端應用程式。Notifies accessibility client applications of the specified AccessibleEvents.

NotifyClients(AccessibleEvents, Int32)

將指定子控制項的指定 AccessibleEvents 告知協助工具用戶端應用程式。Notifies the accessibility client applications of the specified AccessibleEvents for the specified child control.

NotifyClients(AccessibleEvents, Int32, Int32)

將指定子控制項的指定 AccessibleEvents 告知可及性用戶端應用程式,提供 AccessibleObject 的識別。Notifies the accessibility client applications of the specified AccessibleEvents for the specified child control, giving the identification of the AccessibleObject.

RaiseAutomationNotification(AutomationNotificationKind, AutomationNotificationProcessing, String)

引發使用者介面自動化通知事件。Raises the UI automation notification event.

(繼承來源 AccessibleObject)
RaiseLiveRegionChanged()

引發 LiveRegionChanged 使用者介面自動化事件。Raises the LiveRegionChanged UI automation event.

Select(AccessibleSelection)

修改選取或者移動可存取物件的鍵盤焦點。Modifies the selection or moves the keyboard focus of the accessible object.

(繼承來源 AccessibleObject)
ToString()

傳回代表目前物件的字串。Returns a string that represents the current object.

UseStdAccessibleObjects(IntPtr)

根據物件的控制代碼,將物件與 AccessibleObject 的執行個體產生關聯。Associates an object with an instance of an AccessibleObject based on the handle of the object.

(繼承來源 AccessibleObject)
UseStdAccessibleObjects(IntPtr, Int32)

根據物件的控制代碼和物件 ID,將物件與 AccessibleObject 的執行個體產生關聯。Associates an object with an instance of an AccessibleObject based on the handle and the object id of the object.

(繼承來源 AccessibleObject)

明確介面實作

IAccessible.accChildCount

取得屬於這個物件的子介面數目。Gets the number of child interfaces that belong to this object. 如需這個成員的說明,請參閱 accChildCountFor a description of this member, see accChildCount.

(繼承來源 AccessibleObject)
IAccessible.accDoDefaultAction(Object)

執行指定物件的預設動作。Performs the specified object's default action. 並非所有的物件都有預設動作。Not all objects have a default action. 如需這個成員的說明,請參閱 accDoDefaultAction(Object)For a description of this member, see accDoDefaultAction(Object).

(繼承來源 AccessibleObject)
IAccessible.accFocus

取得具有鍵盤焦點的物件。Gets the object that has the keyboard focus. 如需這個成員的說明,請參閱 accFocusFor a description of this member, see accFocus.

(繼承來源 AccessibleObject)
IAccessible.accHitTest(Int32, Int32)

取得位於指定螢幕座標的子物件。Gets the child object at the specified screen coordinates. 如需這個成員的說明,請參閱 accHitTest(Int32, Int32)For a description of this member, see accHitTest(Int32, Int32).

(繼承來源 AccessibleObject)
IAccessible.accLocation(Int32, Int32, Int32, Int32, Object)

取得物件的目前螢幕位置。Gets the object's current screen location. 如需這個成員的說明,請參閱 accLocation(Int32, Int32, Int32, Int32, Object)For a description of this member, see accLocation(Int32, Int32, Int32, Int32, Object).

(繼承來源 AccessibleObject)
IAccessible.accNavigate(Int32, Object)

巡覽至相對於目前物件的可存取物件。Navigates to an accessible object relative to the current object. 如需這個成員的說明,請參閱 accNavigate(Int32, Object)For a description of this member, see accNavigate(Int32, Object).

(繼承來源 AccessibleObject)
IAccessible.accParent

取得這個物件的可存取父物件。Gets the parent accessible object of this object. 如需這個成員的說明,請參閱 accParentFor a description of this member, see accParent.

(繼承來源 AccessibleObject)
IAccessible.accSelect(Int32, Object)

修改選取或者移動可存取物件的鍵盤焦點。Modifies the selection or moves the keyboard focus of the accessible object. 如需這個成員的說明,請參閱 accSelect(Int32, Object)For a description of this member, see accSelect(Int32, Object).

(繼承來源 AccessibleObject)
IAccessible.accSelection

取得可存取物件的選定子物件。Gets the selected child objects of an accessible object. 如需這個成員的說明,請參閱 accSelectionFor a description of this member, see accSelection.

(繼承來源 AccessibleObject)
IAccessible.get_accChild(Object)

擷取指定的子物件。Retrieves a specified child object.

(繼承來源 AccessibleObject)
IAccessible.get_accDefaultAction(Object)

傳回字串,指出指定之物件的預設動作。Returns a string that indicates the specified object's default action.

(繼承來源 AccessibleObject)
IAccessible.get_accDescription(Object)

傳回字串,描述指定之可存取物件的視覺外觀。Returns a string that describes the visual appearance of the specified accessible object.

(繼承來源 AccessibleObject)
IAccessible.get_accHelp(Object)

擷取與指定之可存取物件相關聯 WinHelp 檔案的完整路徑。Retrieves the full path of the WinHelp file that is associated with the specified accessible object.

(繼承來源 AccessibleObject)
IAccessible.get_accHelpTopic(String, Object)

擷取與指定之物件相關聯 WinHelp 檔案的完整路徑,以及檔案中特定主題的識別碼。Retrieves the full path of a WinHelp file that is associated with the specified object along with the identifier of a specific topic in the file.

(繼承來源 AccessibleObject)
IAccessible.get_accKeyboardShortcut(Object)

擷取指定之物件的鍵盤快速鍵或存取金鑰。Retrieves the specified object's keyboard shortcut or access key.

(繼承來源 AccessibleObject)
IAccessible.get_accName(Object)

擷取指定之物件的名稱。Retrieves the name of the specified object.

(繼承來源 AccessibleObject)
IAccessible.get_accRole(Object)

擷取描述指定之物件角色的資訊。Retrieves information that describes the role of the specified object.

(繼承來源 AccessibleObject)
IAccessible.get_accState(Object)

擷取指定之可存取物件的目前狀態。Retrieves the current state of the specified accessible object.

(繼承來源 AccessibleObject)
IAccessible.get_accValue(Object)

擷取指定之可存取物件的值。Retrieves the value of the specified accessible object. 並非所有物件都有值。Not all objects have a value.

(繼承來源 AccessibleObject)
IAccessible.set_accName(Object, String)

將新的可存取名稱指派給指定項目。Assigns a new accessible name to the specified element.

(繼承來源 AccessibleObject)
IAccessible.set_accValue(Object, String)

將新的值指派給指定項目。Assigns a new value to the specified element.

(繼承來源 AccessibleObject)
IReflect.GetField(String, BindingFlags)

取得對應到指定欄位和繫結旗標的 FieldInfo 物件。Gets the FieldInfo object corresponding to the specified field and binding flag. 如需這個成員的說明,請參閱 GetField(String, BindingFlags)For a description of this member, see GetField(String, BindingFlags).

(繼承來源 AccessibleObject)
IReflect.GetFields(BindingFlags)

取得對應到目前類別的所有欄位之 FieldInfo 物件陣列。Gets an array of FieldInfo objects corresponding to all fields of the current class. 如需這個成員的說明,請參閱 GetFields(BindingFlags)For a description of this member, see GetFields(BindingFlags).

(繼承來源 AccessibleObject)
IReflect.GetMember(String, BindingFlags)

取得 MemberInfo 物件陣列,其會對應到所有公用成員或所有符合指定名稱的成員。Gets an array of MemberInfo objects corresponding to all public members or to all members that match a specified name. 如需這個成員的說明,請參閱 GetMember(String, BindingFlags)For a description of this member, see GetMember(String, BindingFlags).

(繼承來源 AccessibleObject)
IReflect.GetMembers(BindingFlags)

取得 MemberInfo 物件陣列,其會對應到所有公用成員或目前類別的所有成員。Gets an array of MemberInfo objects corresponding either to all public members or to all members of the current class. 如需這個成員的說明,請參閱 GetMembers(BindingFlags)For a description of this member, see GetMembers(BindingFlags).

(繼承來源 AccessibleObject)
IReflect.GetMethod(String, BindingFlags)

取得 MethodInfo 物件,其會對應到指定搜尋條件約束下的指定方法。Gets a MethodInfo object corresponding to a specified method under specified search constraints. 如需這個成員的說明,請參閱 GetMethod(String, BindingFlags)For a description of this member, see GetMethod(String, BindingFlags).

(繼承來源 AccessibleObject)
IReflect.GetMethod(String, BindingFlags, Binder, Type[], ParameterModifier[])

使用 Type 陣列從多載方法中選擇,取得對應到指定方法的 MethodInfo 物件。Gets a MethodInfo object corresponding to a specified method, using a Type array to choose from among overloaded methods. 如需這個成員的說明,請參閱 GetMethod(String, BindingFlags, Binder, Type[], ParameterModifier[])For a description of this member, see GetMethod(String, BindingFlags, Binder, Type[], ParameterModifier[]).

(繼承來源 AccessibleObject)
IReflect.GetMethods(BindingFlags)

取得包含所有公用方法或目前類別的所有方法的 MethodInfo 物件陣列。Gets an array of MethodInfo objects with all public methods or all methods of the current class. 如需這個成員的說明,請參閱 GetMethods(BindingFlags)For a description of this member, see GetMethods(BindingFlags).

(繼承來源 AccessibleObject)
IReflect.GetProperties(BindingFlags)

取得 PropertyInfo 物件陣列,其會對應到所有公用屬性或目前類別的所有屬性。Gets an array of PropertyInfo objects corresponding to all public properties or to all properties of the current class. 如需這個成員的說明,請參閱 GetProperties(BindingFlags)For a description of this member, see GetProperties(BindingFlags).

(繼承來源 AccessibleObject)
IReflect.GetProperty(String, BindingFlags)

取得 PropertyInfo 物件,其會對應到指定搜尋條件約束下的指定屬性。Gets a PropertyInfo object corresponding to a specified property under specified search constraints. 如需這個成員的說明,請參閱 GetProperty(String, BindingFlags)For a description of this member, see GetProperty(String, BindingFlags).

(繼承來源 AccessibleObject)
IReflect.GetProperty(String, BindingFlags, Binder, Type, Type[], ParameterModifier[])

取得 PropertyInfo 物件,其會對應到具有指定搜尋條件約束的指定屬性。Gets a PropertyInfo object corresponding to a specified property with specified search constraints. 如需這個成員的說明,請參閱 GetProperty(String, BindingFlags, Binder, Type, Type[], ParameterModifier[])For a description of this member, see GetProperty(String, BindingFlags, Binder, Type, Type[], ParameterModifier[]).

(繼承來源 AccessibleObject)
IReflect.InvokeMember(String, BindingFlags, Binder, Object, Object[], ParameterModifier[], CultureInfo, String[])

叫用指定成員。Invokes a specified member. 如需這個成員的說明,請參閱 InvokeMember(String, BindingFlags, Binder, Object, Object[], ParameterModifier[], CultureInfo, String[])For a description of this member, see InvokeMember(String, BindingFlags, Binder, Object, Object[], ParameterModifier[], CultureInfo, String[]).

(繼承來源 AccessibleObject)
IReflect.UnderlyingSystemType

取得表示 IReflect 物件的基礎型別。Gets the underlying type that represents the IReflect object. 如需這個成員的說明,請參閱 UnderlyingSystemTypeFor a description of this member, see UnderlyingSystemType.

(繼承來源 AccessibleObject)

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