I succeeded in disabling the right context menu (BeforeClick and e.cancel=true), but, then, it's not possible any more to use the Arrow (The on which are roll over on map's border and which enable move on map).
I have an idea on how to do it : I analyse the position of mouse. and I e.cancel only when X,Y are on border's map. But that's a bit dirty and what if the map is reduced with a sub window (like the directions subscreen) ?
Any one, has an idea ?
PS : I use C#, VS2005