ManipulationDeltaEventArgs.DeltaManipulation ManipulationDeltaEventArgs.DeltaManipulation ManipulationDeltaEventArgs.DeltaManipulation ManipulationDeltaEventArgs.DeltaManipulation Property

定義

現在の操作の最新の変更を取得します。Gets the most recent changes of the current manipulation.

public:
 property System::Windows::Input::ManipulationDelta ^ DeltaManipulation { System::Windows::Input::ManipulationDelta ^ get(); };
public System.Windows.Input.ManipulationDelta DeltaManipulation { get; }
member this.DeltaManipulation : System.Windows.Input.ManipulationDelta
Public ReadOnly Property DeltaManipulation As ManipulationDelta

プロパティ値

現在の操作の最新の変更。The most recent changes of the current manipulation.

次の例は、 ManipulationDeltaイベントのイベントハンドラーを示しています。The following example shows an event handler for the ManipulationDelta event. この例ではDeltaManipulation 、プロパティを使用して、のRectangle移動、サイズ変更、および回転を行います。The example uses the DeltaManipulation property to move, resize, and rotate a Rectangle. この例は、 「チュートリアル:初めてのタッチアプリケーションの作成。This example is part of a larger example in Walkthrough: Creating Your First Touch Application.

void Window_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
    
    // Get the Rectangle and its RenderTransform matrix.
    Rectangle rectToMove = e.OriginalSource as Rectangle;
    Matrix rectsMatrix = ((MatrixTransform)rectToMove.RenderTransform).Matrix;

    // Rotate the Rectangle.
    rectsMatrix.RotateAt(e.DeltaManipulation.Rotation, 
                         e.ManipulationOrigin.X, 
                         e.ManipulationOrigin.Y);

    // Resize the Rectangle.  Keep it square 
    // so use only the X value of Scale.
    rectsMatrix.ScaleAt(e.DeltaManipulation.Scale.X, 
                        e.DeltaManipulation.Scale.X, 
                        e.ManipulationOrigin.X,
                        e.ManipulationOrigin.Y);

    // Move the Rectangle.
    rectsMatrix.Translate(e.DeltaManipulation.Translation.X,
                          e.DeltaManipulation.Translation.Y);

    // Apply the changes to the Rectangle.
    rectToMove.RenderTransform = new MatrixTransform(rectsMatrix);

    Rect containingRect =
        new Rect(((FrameworkElement)e.ManipulationContainer).RenderSize);

    Rect shapeBounds =
        rectToMove.RenderTransform.TransformBounds(
            new Rect(rectToMove.RenderSize));

    // Check if the rectangle is completely in the window.
    // If it is not and intertia is occuring, stop the manipulation.
    if (e.IsInertial && !containingRect.Contains(shapeBounds))
    {
        e.Complete();
    }

    
    e.Handled = true;
}
Private Sub Window_ManipulationDelta(ByVal sender As Object, ByVal e As ManipulationDeltaEventArgs)

    ' Get the Rectangle and its RenderTransform matrix.
    Dim rectToMove As Rectangle = e.OriginalSource
    Dim rectTransform As MatrixTransform = rectToMove.RenderTransform
    Dim rectsMatrix As Matrix = rectTransform.Matrix


    ' Rotate the shape
    rectsMatrix.RotateAt(e.DeltaManipulation.Rotation,
                         e.ManipulationOrigin.X,
                         e.ManipulationOrigin.Y)

    ' Resize the Rectangle. Keep it square 
    ' so use only the X value of Scale.
    rectsMatrix.ScaleAt(e.DeltaManipulation.Scale.X,
                        e.DeltaManipulation.Scale.X,
                        e.ManipulationOrigin.X,
                        e.ManipulationOrigin.Y)

    'move the center
    rectsMatrix.Translate(e.DeltaManipulation.Translation.X,
                          e.DeltaManipulation.Translation.Y)

    ' Apply the changes to the Rectangle.
    rectTransform = New MatrixTransform(rectsMatrix)
    rectToMove.RenderTransform = rectTransform

    Dim container As FrameworkElement = e.ManipulationContainer
    Dim containingRect As New Rect(container.RenderSize)

    Dim shapeBounds As Rect = rectTransform.TransformBounds(
                                New Rect(rectToMove.RenderSize))

    ' Check if the rectangle is completely in the window.
    ' If it is not and intertia is occuring, stop the manipulation.
    If e.IsInertial AndAlso Not containingRect.Contains(shapeBounds) Then
        e.Complete()
    End If

    e.Handled = True
End Sub

注釈

プロパティDeltaManipulationには、最後ManipulationDeltaに発生したイベント以降に発生した変更が格納されます。The DeltaManipulation property contains the changes that occurred since the last ManipulationDelta event occurred. このプロパティを使用して、操作されたオブジェクトを変換できます。You can use this property to transform the manipulated object.

適用対象