Boosttestui does not appear at all using remote-desktop

[janwilmans]

setup:

• two physical monitors, main screen on the left, second screen on the right.
• remote desktop into the machine using a different setup: main screen on the right, second on the left.

the stored x,y coordinates are now 'off screen' and the main window is invisible.

I think its basically this issue:
CobaltFusion/DebugViewPP#72
which you fixed in debugview, but not here yet.