隱藏Ribbon的右鍵菜單

xaml中

<dxr:RibbonControl Name="ribbonMenu" DockPanel.Dock="Top" RibbonPopupMenuShowing="ribbonMenu_RibbonPopupMenuShowing" >

cs中

private void ribbonMenu_RibbonPopupMenuShowing(object sender, DevExpress.Xpf.Ribbon.RibbonPopupMenuShowingEventArgs e)
{
    e.Cancel = true;
}