InkCanvas.SelectionResizing イベント

定義

選択したストロークと要素のサイズが変更される前に発生します。Occurs before selected strokes and elements are resized.

public:
 event System::Windows::Controls::InkCanvasSelectionEditingEventHandler ^ SelectionResizing;
public event System.Windows.Controls.InkCanvasSelectionEditingEventHandler SelectionResizing;
member this.SelectionResizing : System.Windows.Controls.InkCanvasSelectionEditingEventHandler 
Public Custom Event SelectionResizing As InkCanvasSelectionEditingEventHandler 
Public Event SelectionResizing As InkCanvasSelectionEditingEventHandler 

次の例では、ユーザーが元のサイズよりも小さい選択を行うことができないようにしています。The following example prevents the user from making a selection smaller than its original size.

Rect selectionBounds;

// Don't allow the user to make the selection smaller than its original size.
void inkCanvas1_SelectionResizing(object sender, InkCanvasSelectionEditingEventArgs e)
{
    if (selectionBounds == null || selectionBounds.IsEmpty)
    {
        return;
    }

    double resizeHeight;
    double resizeWidth;

    // If the user made the height of the selection smaller, 
    // use the selection's original height.
    if (e.NewRectangle.Height < selectionBounds.Height)
    {
        resizeHeight = selectionBounds.Height;
    }
    else
    {
        resizeHeight = e.NewRectangle.Height;
    }

    // If the user made the width of the selection smaller, 
    // use the selection's original width.
    if (e.NewRectangle.Width < selectionBounds.Width)
    {
        resizeWidth = selectionBounds.Width;
    }
    else
    {
        resizeWidth = e.NewRectangle.Width;
    }

    // Create a the new rectangle with the appropriate width and height.
    e.NewRectangle = new Rect(e.NewRectangle.X, e.NewRectangle.Y, resizeWidth, resizeHeight);
}

// Keep track of the selection bounds.
void inkCanvas1_SelectionChanged(object sender, EventArgs e)
{
    selectionBounds = inkCanvas1.GetSelectionBounds();
}
Private selectionBounds As Rect

' Don't allow the user to make the selection smaller than its original size.
Private Sub inkCanvas1_SelectionResizing(ByVal sender As Object, ByVal e As InkCanvasSelectionEditingEventArgs)

    If selectionBounds.IsEmpty Then
        Return
    End If

    Dim resizeHeight As Double
    Dim resizeWidth As Double

    ' If the user made the height of the selection smaller, 
    ' use the selection's original height.
    If e.NewRectangle.Height < selectionBounds.Height Then
        resizeHeight = selectionBounds.Height
    Else
        resizeHeight = e.NewRectangle.Height
    End If

    ' If the user made the width of the selection smaller, 
    ' use the selection's original width.
    If e.NewRectangle.Width < selectionBounds.Width Then
        resizeWidth = selectionBounds.Width
    Else
        resizeWidth = e.NewRectangle.Width
    End If

    ' Create a the new rectangle with the appropriate width and height.
    e.NewRectangle = New Rect(e.NewRectangle.X, e.NewRectangle.Y, resizeWidth, resizeHeight)

End Sub


' Keep track of the selection bounds.
Private Sub inkCanvas1_SelectionChanged(ByVal sender As Object, ByVal e As EventArgs)

    selectionBounds = inkCanvas1.GetSelectionBounds()

End Sub

注釈

このイベントは、ユーザーが選択したストロークや要素のサイズを変更する前に、変更が適用される前に発生します。This event occurs after the user requests that a selection of strokes and/or elements be resized, but before the change is applied.

イベントハンドラーは、OldRectangleNewRectangleの2つのプロパティを含む InkCanvasSelectionEditingEventArgs 型の引数を受け取ります。The event handler receives an argument of type InkCanvasSelectionEditingEventArgs that contains two properties: OldRectangle and NewRectangle. OldRectangle は、サイズ変更操作の前に選択範囲の境界を定義し、NewRectangle サイズ変更操作の後の選択範囲の境界を定義します。OldRectangle defines the boundaries of the selection before the resizing operation and NewRectangle defines the boundaries of the selection after the resizing operation.

ストロークや要素が新しいサイズで更新されると、SelectionResized イベントが発生します。After the strokes and/or elements are updated with the new size, the SelectionResized event is raised.

適用対象

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