Comment 10 for bug 1578637

@jp you are right that it limits off to the left and top of the screen, However after some initial testing while GetFromWindow looked good initially it will not really work either as if the window is over half off the screen then its also considered as not being on that display.

I am thinking of using GetFromPoint still but testing both the topleft and bottomright corners to see whether they are on the screen and if so leaving the coordinates... is this acceptable?