InkCanvas.SelectionChanged Olay
Tanım
Önemli
Bazı bilgiler ürünün ön sürümüyle ilgilidir ve sürüm öncesinde önemli değişiklikler yapılmış olabilir. Burada verilen bilgilerle ilgili olarak Microsoft açık veya zımni hiçbir garanti vermez.
Seçim değiştiğinde InkCanvas gerçekleşir.
public:
event EventHandler ^ SelectionChanged;
public event EventHandler SelectionChanged;
member this.SelectionChanged : EventHandler
Public Custom Event SelectionChanged As EventHandler
Public Event SelectionChanged As EventHandler
Olay Türü
Örnekler
Aşağıdaki örnek, kullanıcının seçimi özgün boyutundan daha küçük hale getirmesini engeller.
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
Açıklamalar
Bu olay, kullanıcı tarafından bir dizi mürekkep vuruşu ve/veya öğesi seçildikten ve uygulandıktan sonra oluşturulur.
Bunun yerine, seçim uygulanmadan önce bir dizi mürekkep vuruşu ve/veya öğe seçen bir isteği işlemeniz gerekiyorsa, olaya bir olay işleyicisi SelectionChanging ekleyin.