void act_MouseRightButtonDown(object sender, MouseButtonEventArgs e)
{
e.Handled = true;
IActivity iact = sender as IActivity;
if (null == iact)
{
return;
}
_Cm.Visibility = System.Windows.Visibility.Visible;
_Cm.Items.Clear();
var cm = iact.ContextMenu();
foreach (var v in cm)
{
MenuItem mi = new MenuItem();
mi.Header = v.Header;
mi.Tag = v;
mi.Click += mi_Click;
_Cm.Items.Add(mi);
}
var p = e.GetPosition(print);
Canvas.SetLeft(_Cm, p.X);
Canvas.SetTop(_Cm, p.Y);
Canvas.SetZIndex(_Cm, 1000);
}