SikuliX

Monitor detection when using multiple displays

Asked by huajie

I am trying to use Sikuli to test an application opening windows on four screens on GNU/Linux.
As the computer where I run the test has only one monitor, I have started Xephyr (http://freedesktop.org/wiki/Software/Xephyr) to simulate another displays.
However, while the documentation (http://sikuli.org/trac/wiki/reference-0.10#MultiMonitorEnvironments) says that the monitor detection is done when the script starts, when I am using print(getNumberScreens()), it returns 1 when my display simulator runs (the command I run: Xephyr -screen 960:1200 -ac -reset -terminate 2> /dev/null :3 &).

Which method is using Sikuli to "get the relevant information from the operating system" about the monitors on GNU/linux?
How come it keeps detecting only one display while I can send any application to be displayed on the simulated monitor ?

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RaiMan (raimund-hocke) said : 		#1

The multi screen management is based on the physical monitor configuration as maintained by the system.

Since in a multiscreen environment you have to qualify find/act on other screens with the screen object, its rather easy, to fix your situation (example for 1 additional screen)

if getNumberScreens() == 1:
  scr1 = selectRegion("pls. select the simulator window for Screen(1)")
else:
  scr1 = Screen(1)

and then:

scr1.find()
scr1.click()

or

with scr1:
   find()
   click()

this works, if the pixel resolution (screen size does not matter) is the same in the simulated windows and the real screen.

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