private void fire_SelectedShapeChanged(ChangeReson reason = ChangeReson.Unknown)
{
// sayLastSelectedShape(false);
if (SelectedShapeChanged != null)
{
Task t = new Task(new Action(() => { try { SelectedShapeChanged.Invoke(this, new SelectedShapeChangedEventArgs(reason)); } catch { } }));
Thread.Sleep(10);
t.Start();
}
}
protected virtual void OnSelectedShapeChanged()
{
SelectedShapeChanged?.Invoke(this, EventArgs.Empty);
}