//click rectangle
private void HandleRectangleButtonClick(object sender, RoutedEventArgs e)
{
_model.ClickRectangle();
_line.IsEnabled = true;
_ellipse.IsEnabled = true;
_rectangle.IsEnabled = false;
}
//click rectangle
public void HandleRectangleButtonClick(object sender, System.EventArgs e)
{
_model.ClickRectangle();
_buttonRectangle.Enabled = false;
_buttonLine.Enabled = true;
_buttonEllipse.Enabled = true;
_buttonArrow.Enabled = true;
_buttonSelect.Enabled = true;
}
