How to handle the MouseRightButtonDown Event for a Window in Silverlight OOB

Question

I want to disable Silverlight contex menu for a Window in Silverlight OOB application

Window wn = new Window();

wn.Show();

For ChildWindow in silverlight I was able to disable the silverlight default context menu which displays "Silverlight" and "Remove this Application" by handling its MouseRightButtonDownEvent

 ChilWindow.MouseRightButtonDownEvent +=(s,e)=>{e.handled=true;};

But I am not able to handle the default contex menu here because the Window class is missing the MouseRightButtonDownEvent If I put a usercontrol inside the window i am able to handle it for the content inside the window however the contex menu is not disabled in the windows title bar.