InkCanvas.SelectionResizing Событие

Определение

Происходит до изменения размеров выделенных штрихов и элементов.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 

Примеры

В следующем примере пользователь не сможет сделать выбор меньше исходного размера.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

Комментарии

Это событие возникает после того, как пользователь запрашивает изменение размера выделенных штрихов или элементов, но до применения изменения.This event occurs after the user requests that a selection of strokes and/or elements be resized, but before the change is applied.

Обработчик событий получает аргумент типа InkCanvasSelectionEditingEventArgs , который содержит два свойства: OldRectangle и NewRectangle.The event handler receives an argument of type InkCanvasSelectionEditingEventArgs that contains two properties: OldRectangle and NewRectangle. OldRectangleопределяет границы выделения перед операцией изменения размера и NewRectangle определяет границы выделения после операции изменения размера.OldRectangle defines the boundaries of the selection before the resizing operation and NewRectangle defines the boundaries of the selection after the resizing operation.

После обновления штрихов и (или) SelectionResized элементов с новым размером возникает событие.After the strokes and/or elements are updated with the new size, the SelectionResized event is raised.

Применяется к

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