DataGridViewTopLeftHeaderCell::DataGridViewTopLeftHeaderCellAccessibleObject Class

 

Provides information about a DataGridViewTopLeftHeaderCell to accessibility client applications.

Namespace:   System.Windows.Forms
Assembly:  System.Windows.Forms (in System.Windows.Forms.dll)

System::Object
  System::MarshalByRefObject
    System.Runtime.InteropServices::StandardOleMarshalObject
      System.Windows.Forms::AccessibleObject
        System.Windows.Forms::DataGridViewCell::DataGridViewCellAccessibleObject
          System.Windows.Forms::DataGridViewColumnHeaderCell::DataGridViewColumnHeaderCellAccessibleObject
            System.Windows.Forms::DataGridViewTopLeftHeaderCell::DataGridViewTopLeftHeaderCellAccessibleObject

protected ref class DataGridViewTopLeftHeaderCellAccessibleObject : DataGridViewColumnHeaderCell::DataGridViewColumnHeaderCellAccessibleObject

NameDescription
System_CAPS_pubmethodDataGridViewTopLeftHeaderCell::DataGridViewTopLeftHeaderCellAccessibleObject(DataGridViewTopLeftHeaderCell^)

Initializes a new instance of the DataGridViewTopLeftHeaderCell::DataGridViewTopLeftHeaderCellAccessibleObject class.

NameDescription
System_CAPS_pubpropertyBounds

Gets the location and size of the accessible object.(Overrides DataGridViewColumnHeaderCell::DataGridViewColumnHeaderCellAccessibleObject::Bounds.)

System_CAPS_pubpropertyDefaultAction

Gets a description of the default action of the DataGridViewTopLeftHeaderCell::DataGridViewTopLeftHeaderCellAccessibleObject.(Overrides DataGridViewColumnHeaderCell::DataGridViewColumnHeaderCellAccessibleObject::DefaultAction.)

System_CAPS_pubpropertyDescription

Gets a string that describes the visual appearance of the specified object. Not all objects have a description.(Inherited from AccessibleObject.)

System_CAPS_pubpropertyHelp

Gets the names of the owning cell's type and base type.(Inherited from DataGridViewCell::DataGridViewCellAccessibleObject.)

System_CAPS_pubpropertyKeyboardShortcut

Gets the shortcut key or access key for the accessible object.(Inherited from AccessibleObject.)

System_CAPS_pubpropertyName

Gets the name of the DataGridViewTopLeftHeaderCell::DataGridViewTopLeftHeaderCellAccessibleObject.(Overrides DataGridViewColumnHeaderCell::DataGridViewColumnHeaderCellAccessibleObject::Name.)

System_CAPS_pubpropertyOwner
System_CAPS_pubpropertyParent
System_CAPS_pubpropertyRole
System_CAPS_pubpropertyState

Gets the state of the DataGridViewTopLeftHeaderCell::DataGridViewTopLeftHeaderCellAccessibleObject.(Overrides DataGridViewColumnHeaderCell::DataGridViewColumnHeaderCellAccessibleObject::State.)

System_CAPS_pubpropertyValue

NameDescription
System_CAPS_pubmethodCreateObjRef(Type^)

Creates an object that contains all the relevant information required to generate a proxy used to communicate with a remote object.(Inherited from MarshalByRefObject.)

System_CAPS_pubmethodDoDefaultAction()
System_CAPS_pubmethodEquals(Object^)

Determines whether the specified object is equal to the current object.(Inherited from Object.)

System_CAPS_protmethodFinalize()

Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)

System_CAPS_pubmethodGetChild(Int32)

Returns the accessible object corresponding to the specified index.(Inherited from DataGridViewCell::DataGridViewCellAccessibleObject.)

System_CAPS_pubmethodGetChildCount()

Returns the number of children that belong to the DataGridViewCell::DataGridViewCellAccessibleObject.(Inherited from DataGridViewCell::DataGridViewCellAccessibleObject.)

System_CAPS_pubmethodGetFocused()

Returns the child accessible object that has keyboard focus.(Inherited from DataGridViewCell::DataGridViewCellAccessibleObject.)

System_CAPS_pubmethodGetHashCode()

Serves as the default hash function. (Inherited from Object.)

System_CAPS_pubmethodGetHelpTopic(String^%)

Gets an identifier for a Help topic identifier and the path to the Help file associated with this accessible object.(Inherited from AccessibleObject.)

System_CAPS_pubmethodGetLifetimeService()

Retrieves the current lifetime service object that controls the lifetime policy for this instance.(Inherited from MarshalByRefObject.)

System_CAPS_pubmethodGetSelected()

Returns the child accessible object that is currently selected.(Inherited from DataGridViewCell::DataGridViewCellAccessibleObject.)

System_CAPS_pubmethodGetType()

Gets the Type of the current instance.(Inherited from Object.)

System_CAPS_pubmethodHitTest(Int32, Int32)

Retrieves the child object at the specified screen coordinates.(Inherited from AccessibleObject.)

System_CAPS_pubmethodInitializeLifetimeService()

Obtains a lifetime service object to control the lifetime policy for this instance.(Inherited from MarshalByRefObject.)

System_CAPS_protmethodMemberwiseClone()

Creates a shallow copy of the current Object.(Inherited from Object.)

System_CAPS_protmethodMemberwiseClone(Boolean)

Creates a shallow copy of the current MarshalByRefObject object.(Inherited from MarshalByRefObject.)

System_CAPS_pubmethodNavigate(AccessibleNavigation)
System_CAPS_pubmethodSelect(AccessibleSelection)

Modifies the selection in the DataGridView control or sets input focus to the control. (Overrides DataGridViewColumnHeaderCell::DataGridViewColumnHeaderCellAccessibleObject::Select(AccessibleSelection).)

System_CAPS_pubmethodToString()

Returns a string that represents the current object.(Inherited from Object.)

System_CAPS_protmethodUseStdAccessibleObjects(IntPtr)

This API supports the product infrastructure and is not intended to be used directly from your code. Associates an object with an instance of an AccessibleObject based on the handle of the object.(Inherited from AccessibleObject.)

System_CAPS_protmethodUseStdAccessibleObjects(IntPtr, Int32)

This API supports the product infrastructure and is not intended to be used directly from your code. Associates an object with an instance of an AccessibleObject based on the handle and the object id of the object.(Inherited from AccessibleObject.)

NameDescription
System_CAPS_pubinterfaceSystem_CAPS_privmethodIAccessible::accDoDefaultAction(Object^)

This API supports the product infrastructure and is not intended to be used directly from your code. Performs the specified object's default action. Not all objects have a default action. For a description of this member, see IAccessible::accDoDefaultAction.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIAccessible::accHitTest(Int32, Int32)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the child object at the specified screen coordinates. For a description of this member, see IAccessible::accHitTest.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIAccessible::accLocation(Int32%, Int32%, Int32%, Int32%, Object^)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the object's current screen location. For a description of this member, see IAccessible::accLocation.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIAccessible::accNavigate(Int32, Object^)

This API supports the product infrastructure and is not intended to be used directly from your code. Navigates to an accessible object relative to the current object. For a description of this member, see IAccessible::accNavigate.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIAccessible::accSelect(Int32, Object^)

This API supports the product infrastructure and is not intended to be used directly from your code. Modifies the selection or moves the keyboard focus of the accessible object. For a description of this member, see IAccessible::accSelect.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::GetField(String^, BindingFlags)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the System.Reflection::FieldInfo object corresponding to the specified field and binding flag. For a description of this member, see IReflect::GetField.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::GetFields(BindingFlags)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets an array of System.Reflection::FieldInfo objects corresponding to all fields of the current class. For a description of this member, see IReflect::GetFields.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::GetMember(String^, BindingFlags)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets an array of System.Reflection::MemberInfo objects corresponding to all public members or to all members that match a specified name. For a description of this member, see IReflect::GetMember.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::GetMembers(BindingFlags)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets an array of System.Reflection::MemberInfo objects corresponding either to all public members or to all members of the current class. For a description of this member, see IReflect::GetMembers.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::GetMethod(String^, BindingFlags)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets a System.Reflection::MethodInfo object corresponding to a specified method under specified search constraints. For a description of this member, see IReflect::GetMethod.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::GetMethod(String^, BindingFlags, Binder^, array<Type^>^, array<ParameterModifier>^)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets a System.Reflection::MethodInfo object corresponding to a specified method, using a Type array to choose from among overloaded methods. For a description of this member, see IReflect::GetMethod.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::GetMethods(BindingFlags)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets an array of System.Reflection::MethodInfo objects with all public methods or all methods of the current class. For a description of this member, see IReflect::GetMethods.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::GetProperties(BindingFlags)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets an array of System.Reflection::PropertyInfo objects corresponding to all public properties or to all properties of the current class. For a description of this member, see IReflect::GetProperties.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::GetProperty(String^, BindingFlags)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets a System.Reflection::PropertyInfo object corresponding to a specified property under specified search constraints. For a description of this member, see IReflect::GetProperty.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::GetProperty(String^, BindingFlags, Binder^, Type^, array<Type^>^, array<ParameterModifier>^)

This API supports the product infrastructure and is not intended to be used directly from your code. Gets a System.Reflection::PropertyInfo object corresponding to a specified property with specified search constraints. For a description of this member, see IReflect::GetProperty.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privmethodIReflect::InvokeMember(String^, BindingFlags, Binder^, Object^, array<Object^>^, array<ParameterModifier>^, CultureInfo^, array<String^>^)

This API supports the product infrastructure and is not intended to be used directly from your code. Invokes a specified member. For a description of this member, see IReflect::InvokeMember.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privpropertyIAccessible::accChildCount

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the number of child interfaces that belong to this object. For a description of this member, see IAccessible::accChildCount.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privpropertyIAccessible::accFocus

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the object that has the keyboard focus. For a description of this member, see IAccessible::accFocus.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privpropertyIAccessible::accParent

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the parent accessible object of this object. For a description of this member, see IAccessible::accParent.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privpropertyIAccessible::accSelection

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the selected child objects of an accessible object. For a description of this member, see IAccessible::accSelection.(Inherited from AccessibleObject.)

System_CAPS_pubinterfaceSystem_CAPS_privpropertyIReflect::UnderlyingSystemType

This API supports the product infrastructure and is not intended to be used directly from your code. Gets the underlying type that represents the IReflect object. For a description of this member, see IReflect::UnderlyingSystemType.(Inherited from AccessibleObject.)

Windows Forms includes built-in accessibility support that allows your application to work with accessibility client applications. Examples of accessibility client applications include screen enlarger and reviewer utilities, voice input utilities, on-screen keyboards, alternative input devices, and keyboard enhancement utilities.

The DataGridViewTopLeftHeaderCell::DataGridViewTopLeftHeaderCellAccessibleObject class inherits from the AccessibleObject class to provide information about a DataGridViewTopLeftHeaderCell to accessibility client applications. Each class that represents a visual part of the DataGridView—such as DataGridViewColumnHeaderCell, DataGridViewRowHeaderCell, DataGridViewRow and DataGridViewCell—also contains a class that inherits from AccessibleObject to provide information about the containing class and perform actions on behalf of accessibility client applications.

There are instances when you will want to provide additional information, such as the name or description of the DataGridView control, to accessibility client applications. There are two ways of providing this additional information. To provide limited accessibility information for existing controls, set the control's AccessibleName and AccessibleDescription property values, which will be reported to accessibility client applications.

System_CAPS_noteNote

You should change the AccessibleDefaultActionDescription and AccessibleRole property values only in rare situations, such as if you make a DataGridView look like a list.

Occasionally, you might require more accessibility information or different accessibility actions to be included with your custom DataGridView or DataGridViewCell. To customize accessibility, you can write your own class that derives from the DataGridView::DataGridViewAccessibleObject or DataGridViewCell::DataGridViewCellAccessibleObject classes and override the CreateAccessibilityInstance method. For example, if you are writing a custom row header cell that implements unique custom actions, such as special hit testing within your cell, you should create a class that inherits from the DataGridViewRowHeaderCell::DataGridViewRowHeaderCellAccessibleObject class and override the CreateAccessibilityInstance method.

The DataGridView exposes its data structure by using AccessibleRole values to define the data table hierarchy. For more information on exposing data tables to Microsoft Active Accessibility, see "Exposing Data Tables through Microsoft Active Accessibility" in the MSDN library at http://msdn.microsoft.com/library.

.NET Framework
Available since 2.0

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

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