[issue #41] XClick fails if second monitor is connected

[pokedo]

https://drive.google.com/file/d/1nL1raBylXmEnMzLswNbLB3EwTQDfxbV-/view
Video screen capture
First time, use 2 monitor at the same time → error (at 00:00:30 look at 2nd monitor)
Second time, only use one screen → it’s ok!