// Shows the Assets menu when you right click on the contextRect Rectangle.

class EditorUtilityDisplayPopupMenu extends EditorWindow {
function OnGUI () {
var evt = Event.current;
var contextRect = Rect(10,10,100,100);
if(evt.type == EventType.ContextClick) {
var mousePos = evt.mousePosition;
if (contextRect.Contains (mousePos)) {
EditorUtility.DisplayPopupMenu (Rect (mousePos.x,mousePos.y,0,0), "Assets/", null);
evt.Use();
}
}
}
}