/// <summary>
/// Called when the ContextMenu is opened.
/// </summary>
/// <param name="sender">Event source.</param>
/// <param name="e">Event arguments.</param>
private void ContextMenu_Opened(object sender, RoutedEventArgs e)
{
// Offset the ContextMenu correctly
#if SILVERLIGHT
_contextMenuInitialOffset = _contextMenu.TransformToVisual(null).Transform(new Point());
#else
_contextMenuInitialOffset = TranslatePoint(new Point(0, ActualHeight), _contextMenu);
#endif
UpdateContextMenuOffsets();
// Hook LayoutUpdated to handle application resize and zoom changes
LayoutUpdated += new EventHandler(SplitButton_LayoutUpdated);
}
