AccessibleObject.Select(AccessibleSelection) 메서드

참조

정의

네임스페이스:: System.Windows.Forms

어셈블리:: System.Windows.Forms.dll

중요

일부 정보는 릴리스되기 전에 상당 부분 수정될 수 있는 시험판 제품과 관련이 있습니다. Microsoft는 여기에 제공된 정보에 대해 어떠한 명시적이거나 묵시적인 보증도 하지 않습니다.

선택 영역을 수정하거나 접근성 있는 개체의 키보드 포커스를 이동합니다.

public:
 virtual void Select(System::Windows::Forms::AccessibleSelection flags);

public virtual void Select (System.Windows.Forms.AccessibleSelection flags);

abstract member Select : System.Windows.Forms.AccessibleSelection -> unit
override this.Select : System.Windows.Forms.AccessibleSelection -> unit

Public Overridable Sub Select (flags As AccessibleSelection)

매개 변수

flags: AccessibleSelection

AccessibleSelection 값 중 하나입니다.

예외

COMException

선택을 수행할 수 없습니다.

예제

다음 예제에서는 AccessibleObject 및 Control.ControlAccessibleObject 클래스를 사용하여 접근성 인식 차트 컨트롤을 만들어 접근성 정보를 노출하는 방법을 보여 줍니다. 컨트롤은 범례와 함께 두 개의 곡선을 그어 옵니다. ControlAccessibleObject파생되는 ChartControlAccessibleObject 클래스는 CreateAccessibilityInstance 메서드에서 차트 컨트롤에 대한 사용자 지정 액세스 가능한 정보를 제공하는 데 사용됩니다. 차트 범례는 실제 Control -based 컨트롤이 아니라 차트 컨트롤에 의해 그려지므로 기본 제공 액세스 가능한 정보가 없습니다. 이 때문에 ChartControlAccessibleObject 클래스는 범례의 각 부분에 대해 액세스 가능한 정보를 나타내는 CurveLegendAccessibleObject 반환하도록 GetChild 메서드를 재정의합니다. 액세스 가능 인식 애플리케이션이 이 컨트롤을 사용하는 경우 컨트롤은 필요한 액세스 가능한 정보를 제공할 수 있습니다.

이 코드는 Select 메서드 재정의를 보여 줍니다. 전체 코드 예제는 AccessibleObject 클래스 개요를 참조하세요.

   // Inner class CurveLegendAccessibleObject represents accessible information
   // associated with the CurveLegend object.
public:
   ref class CurveLegendAccessibleObject: public AccessibleObject
   {
   private:
      CurveLegend^ curveLegend;

   public:
      CurveLegendAccessibleObject( CurveLegend^ curveLegend )
         : AccessibleObject()
      {
         this->curveLegend = curveLegend;
      }


   private:

      property ChartControlAccessibleObject^ ChartControl 
      {

         // Private property that helps get the reference to the parent ChartControl.
         ChartControlAccessibleObject^ get()
         {
            return dynamic_cast<ChartControlAccessibleObject^>(Parent);
         }

      }

   internal:

      property int ID 
      {

         // Internal helper function that returns the ID for this CurveLegend.
         int get()
         {
            for ( int i = 0; i < ChartControl->GetChildCount(); i++ )
            {
               if ( ChartControl->GetChild( i ) == this )
               {
                  return i;
               }

            }
            return  -1;
         }

      }

   public:

      property Rectangle Bounds 
      {

         // Gets the Bounds for the CurveLegend. This is used by accessibility programs.
         virtual Rectangle get() override
         {
            
            // The bounds is in screen coordinates.
            Point loc = curveLegend->Location;
            return Rectangle(curveLegend->chart->PointToScreen( loc ),curveLegend->Size);
         }

      }

      property String^ Name 
      {

         // Gets or sets the Name for the CurveLegend. This is used by accessibility programs.
         virtual String^ get() override
         {
            return curveLegend->Name;
         }

         virtual void set( String^ value ) override
         {
            curveLegend->Name = value;
         }

      }

      property AccessibleObject^ Parent 
      {

         // Gets the Curve Legend Parent's Accessible object.
         // This is used by accessibility programs.
         virtual AccessibleObject^ get() override
         {
            return curveLegend->chart->AccessibilityObject;
         }

      }

      property System::Windows::Forms::AccessibleRole Role 
      {

         // Gets the role for the CurveLegend. This is used by accessibility programs.
         virtual System::Windows::Forms::AccessibleRole get() override
         {
            return ::AccessibleRole::StaticText;
         }

      }

      property AccessibleStates State 
      {

         // Gets the state based on the selection for the CurveLegend.
         // This is used by accessibility programs.
         virtual AccessibleStates get() override
         {
            AccessibleStates state = AccessibleStates::Selectable;
            if ( curveLegend->Selected )
            {
               state = static_cast<AccessibleStates>(state | AccessibleStates::Selected);
            }

            return state;
         }

      }

      // Navigates through siblings of this CurveLegend. This is used by accessibility programs.
      virtual AccessibleObject^ Navigate( AccessibleNavigation navdir ) override
      {
         
         // Uses the internal NavigateFromChild helper function that exists
         // on ChartControlAccessibleObject.
         return ChartControl->NavigateFromChild( this, navdir );
      }


      // Selects or unselects this CurveLegend. This is used by accessibility programs.
      virtual void Select( AccessibleSelection selection ) override
      {
         
         // Uses the internal SelectChild helper function that exists
         // on ChartControlAccessibleObject.
         ChartControl->SelectChild( this, selection );
      }

   };

// Inner class CurveLegendAccessibleObject represents accessible information 
// associated with the CurveLegend object.
public class CurveLegendAccessibleObject : AccessibleObject
{
    private CurveLegend curveLegend;

    public CurveLegendAccessibleObject(CurveLegend curveLegend) : base() 
    {
        this.curveLegend = curveLegend;                    
    }                

    // Private property that helps get the reference to the parent ChartControl.
    private ChartControlAccessibleObject ChartControl
    {   
        get {
            return Parent as ChartControlAccessibleObject;
        }
    }

    // Internal helper function that returns the ID for this CurveLegend.
    internal int ID
    {
        get {
            for(int i = 0; i < ChartControl.GetChildCount(); i++) {
                if (ChartControl.GetChild(i) == this) {
                    return i;
                }
            }
            return -1;
        }
    }

    // Gets the Bounds for the CurveLegend. This is used by accessibility programs.
    public override Rectangle Bounds
    {
        get {                        
            // The bounds is in screen coordinates.
            Point loc = curveLegend.Location;
            return new Rectangle(curveLegend.chart.PointToScreen(loc), curveLegend.Size);
        }
    }

    // Gets or sets the Name for the CurveLegend. This is used by accessibility programs.
    public override string Name
    {
        get {
            return curveLegend.Name;
        }
        set {
            curveLegend.Name = value;                        
        }
    }

    // Gets the Curve Legend Parent's Accessible object.
    // This is used by accessibility programs.
    public override AccessibleObject Parent
    {
        get {
            return curveLegend.chart.AccessibilityObject;
        }
    }

    // Gets the role for the CurveLegend. This is used by accessibility programs.
    public override AccessibleRole Role 
    {
        get {
            return AccessibleRole.StaticText;
        }
    }

    // Gets the state based on the selection for the CurveLegend. 
    // This is used by accessibility programs.
    public override AccessibleStates State 
    {
        get {
            AccessibleStates state = AccessibleStates.Selectable;
            if (curveLegend.Selected) 
            {
                state |= AccessibleStates.Selected;
            }
            return state;
        }
    }

    // Navigates through siblings of this CurveLegend. This is used by accessibility programs.
    public override AccessibleObject Navigate(AccessibleNavigation navdir) 
    {
        // Uses the internal NavigateFromChild helper function that exists
        // on ChartControlAccessibleObject.
        return ChartControl.NavigateFromChild(this, navdir);
    }

    // Selects or unselects this CurveLegend. This is used by accessibility programs.
    public override void Select(AccessibleSelection selection) 
    {
        // Uses the internal SelectChild helper function that exists
        // on ChartControlAccessibleObject.
        ChartControl.SelectChild(this, selection);
    }
}

' Inner class CurveLegendAccessibleObject represents accessible information 
' associated with the CurveLegend object.
Public Class CurveLegendAccessibleObject
    Inherits AccessibleObject

    Private curveLegend As CurveLegend
    
    Public Sub New(curveLegend As CurveLegend)
        Me.curveLegend = curveLegend
    End Sub
    
    ' Private property that helps get the reference to the parent ChartControl.                
    Private ReadOnly Property ChartControl() As ChartControlAccessibleObject
        Get
            Return CType(Parent, ChartControlAccessibleObject)
        End Get
    End Property

    ' Friend helper function that returns the ID for this CurveLegend.                
    Friend ReadOnly Property ID() As Integer
        Get
            Dim i As Integer
            For i = 0 To (ChartControl.GetChildCount()) - 1
                If ChartControl.GetChild(i) Is Me Then
                    Return i
                End If
            Next i
            Return - 1
        End Get
    End Property
    
    ' Gets the Bounds for the CurveLegend. This is used by accessibility programs.
    Public Overrides ReadOnly Property Bounds() As Rectangle
        Get
            ' The bounds is in screen coordinates.
            Dim loc As Point = curveLegend.Location
            Return New Rectangle(curveLegend.chart.PointToScreen(loc), curveLegend.Size)
        End Get
    End Property

    ' Gets or sets the Name for the CurveLegend. This is used by accessibility programs.                
    Public Overrides Property Name() As String
        Get
            Return curveLegend.Name
        End Get
        Set
            curveLegend.Name = value
        End Set
    End Property
    
    ' Gets the Curve Legend Parent's Accessible object.
    ' This is used by accessibility programs.                
    Public Overrides ReadOnly Property Parent() As AccessibleObject
        Get
            Return curveLegend.chart.AccessibilityObject
        End Get
    End Property
    
    ' Gets the role for the CurveLegend. This is used by accessibility programs.                
    Public Overrides ReadOnly Property Role() As AccessibleRole
        Get
            Return System.Windows.Forms.AccessibleRole.StaticText
        End Get
    End Property

    ' Gets the state based on the selection for the CurveLegend. 
    ' This is used by accessibility programs.                
    Public Overrides ReadOnly Property State() As AccessibleStates
        Get
            Dim stateTemp As AccessibleStates = AccessibleStates.Selectable
            If curveLegend.Selected Then
                stateTemp = stateTemp Or AccessibleStates.Selected
            End If
            Return stateTemp
        End Get
    End Property
    
    ' Navigates through siblings of this CurveLegend. This is used by accessibility programs.                
    Public Overrides Function Navigate(navdir As AccessibleNavigation) As AccessibleObject
        ' Use the Friend NavigateFromChild helper function that exists
        ' on ChartControlAccessibleObject.
        Return ChartControl.NavigateFromChild(Me, navdir)
    End Function
    
    ' Selects or unselects this CurveLegend. This is used by accessibility programs.
    Public Overrides Sub [Select](selection As AccessibleSelection)

        ' Use the internal SelectChild helper function that exists
        ' on ChartControlAccessibleObject.
        ChartControl.SelectChild(Me, selection)
    End Sub

End Class

설명

애플리케이션은 이 메서드를 사용하여 복잡한 선택 작업을 수행할 수 있습니다.

다음은 복잡한 선택 작업을 수행하기 위해 Select 호출할 때 지정할 AccessibleSelection 값에 대해 설명합니다.

수술	플래그 조합
클릭을 시뮬레이션하려면	AccessibleSelection.TakeFocus `OR` AccessibleSelection.TakeSelection 참고: 이 조합은 사용자 고유의 애플리케이션 내에서 호출되는 경우 원하는 컨트롤을 선택하지 않습니다. 그러나 외부 애플리케이션에서 호출되는 경우 원하는 효과가 있습니다.
Ctrl+클릭을 시뮬레이트하여 대상 항목을 선택하려면	AccessibleSelection.TakeFocus `OR` AccessibleSelection.AddSelection
Ctrl+클릭을 시뮬레이션하여 대상 항목 선택을 취소하려면	AccessibleSelection.TakeFocus `OR` AccessibleSelection.RemoveSelection
SHIFT를 시뮬레이션하려면 + 클릭	AccessibleSelection.TakeFocus `OR` AccessibleSelection.ExtendSelection
개체 범위를 선택하고 마지막 개체에 포커스를 두려면	시작 개체에서 AccessibleSelection.TakeFocus 지정하여 선택 앵커를 설정합니다. 그런 다음 Select 다시 호출하고 마지막 개체에 AccessibleSelection.TakeFocus`OR`AccessibleSelection.ExtendSelection 지정합니다.
모든 개체의 선택을 취소하려면	모든 개체에 AccessibleSelection.TakeSelection 지정합니다. 이 플래그는 방금 선택한 개체를 제외한 선택한 모든 개체의 선택을 취소합니다. 그런 다음 Select 다시 호출하고 동일한 개체에 AccessibleSelection.RemoveSelection 지정합니다.

상속자 참고

키보드 포커스를 선택하거나 받을 수 있는 모든 개체는 이 메서드를 지원해야 합니다.

적용 대상

다음을 통해 공유

AccessibleObject.Select(AccessibleSelection) 메서드

정의

매개 변수

예외

예제

설명

상속자 참고

적용 대상

피드백

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