InkCanvas.SelectionResizing InkCanvas.SelectionResizing InkCanvas.SelectionResizing InkCanvas.SelectionResizing Event

Definition

Tritt ein, bevor die Größe der ausgewählten Striche und Elemente geändert wird.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 Event SelectionResizing As InkCanvasSelectionEditingEventHandler 

Beispiele

Im folgenden Beispiel wird verhindert, dass der Benutzer eine Auswahl unterscheidet, die kleiner als die ursprüngliche Größe ist.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 'inkCanvas1_SelectionResizing


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

    selectionBounds = inkCanvas1.GetSelectionBounds()

End Sub 'inkCanvas1_SelectionChanged

Hinweise

Dieses Ereignis tritt auf, nachdem der Benutzer die Größe der Striche und/oder Elemente geändert hat, jedoch bevor die Änderung angewendet wird.This event occurs after the user requests that a selection of strokes and/or elements be resized, but before the change is applied.

Der Ereignishandler empfängt ein Argument vom Typ InkCanvasSelectionEditingEventArgs , das zwei Eigenschaften enthält OldRectangle : NewRectangleund.The event handler receives an argument of type InkCanvasSelectionEditingEventArgs that contains two properties: OldRectangle and NewRectangle. OldRectangledefiniert die Begrenzungen der Auswahl vor dem Vorgang zum Ändern der Größe NewRectangle und definiert die Begrenzungen der Auswahl nach dem Vorgang zum Ändern der Größe.OldRectangle defines the boundaries of the selection before the resizing operation and NewRectangle defines the boundaries of the selection after the resizing operation.

Nachdem die Striche und/oder Elemente mit der neuen Größe aktualisiert wurden, wird SelectionResized das-Ereignis ausgelöst.After the strokes and/or elements are updated with the new size, the SelectionResized event is raised.

Gilt für:

Siehe auch