AccessibleObject.Select(AccessibleSelection) 메서드

정의

선택을 수정하거나 액세스 가능 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

선택을 수행할 수 없는 경우

예제

다음 예제에서는 접근성 인식 차트 컨트롤의 생성을 보여 줍니다., 사용 하 여 AccessibleObject 클래스 Control.ControlAccessibleObject 액세스 가능한 정보를 노출 합니다. 컨트롤은 범례를 따라 두 곡선을 그립니다. 합니다 ChartControlAccessibleObject 클래스에서 파생 되는 ControlAccessibleObject에 사용 되는 CreateAccessibilityInstance 차트 컨트롤에 대 한 사용자 지정 액세스할 수 있는 정보를 제공 하는 방법입니다. 차트 범례는 실제 Control 기반 컨트롤이 아니라 차트 컨트롤에 의해 그려지므로 액세스 가능한 기본 제공 정보가 없습니다. 이 인해 합니다 ChartControlAccessibleObject 재정의 클래스를 GetChild 반환 하는 방법은 CurveLegendAccessibleObject 범례의 각 부분에 액세스할 수 있는 정보를 나타내는입니다. 인식 액세스할 수 있는 애플리케이션에서이 컨트롤을 사용 하는 경우 컨트롤이 필요한 액세스할 수 있는 정보를 제공할 수 있습니다.

이 코드에서는 재정의 보여 줍니다.는 Select 메서드. 참조 된 AccessibleObject 전체 코드 예제에 대 한 클래스 개요입니다.

   // 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

애플리케이션이이 메서드를 사용 하 여 복잡 한 선택 작업을 수행할 수 있습니다.

다음은 복잡한 선택 작업을 수행하기 위해 호출 Select 할 때 지정할 값에 대해 설명 AccessibleSelection 합니다.

작업(Operation) 플래그 조합
클릭을 시뮬레이션하려면 AccessibleSelection.TakeFocus OR AccessibleSelection.TakeSelection 참고: 사용자 고유의 애플리케이션 내에서 호출 하는 경우이 조합은 원하는 컨트롤을 선택 하지 않습니다. 그러나 하는 경우 원하는 결과 외부 애플리케이션에서 호출 된 경우
Ctrl +를 클릭하여 대상 항목을 선택하려면 AccessibleSelection.TakeFocus OR AccessibleSelection.AddSelection
Ctrl+클릭을 시뮬레이션하여 대상 항목 선택을 취소하려면 AccessibleSelection.TakeFocus OR AccessibleSelection.RemoveSelection
SHIFT를 시뮬레이트하려면 +클릭 AccessibleSelection.TakeFocus OR AccessibleSelection.ExtendSelection
개체 범위를 선택하고 마지막 개체에 포커스를 두려면 선택 앵커를 설정하려면 시작 개체를 지정 AccessibleSelection.TakeFocus 합니다. 그런 다음, 다시 호출 Select 하고 마지막 개체를 지정 AccessibleSelection.TakeFocus OR AccessibleSelection.ExtendSelection 합니다.
모든 개체의 선택을 취소하려면 모든 개체에 지정 AccessibleSelection.TakeSelection 합니다. 이 플래그는 방금 선택한 개체를 제외한 선택한 모든 개체의 선택을 취소합니다. 그런 다음, 다시 호출 Select 하고 동일한 개체를 지정 AccessibleSelection.RemoveSelection 합니다.

상속자 참고

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

적용 대상