I am using "Fullscreen when starting with a file" - which is working fine - from Windows Explorer, double-click on a picture does open XnViewMP in fullscreen mode.
But - keeping XnViewMP open, switching back to Windows Explorer, double-click on a 2nd picture does switch to XnViewMP and brings XnViewMP to front - fine - but switches XnViewMP to Viewer mode.
This is not what I want with using this Fullscreen mode - so is there a way to always use XnViewMP in Fullscreen mode, is there a way to avoid, that XnViewMP switches to Viewer mode when opening a new picture from Windows Explorer ?
Yes, I can use F11, or the mouse, but thats not what I want

Thanks !
Best wishes,
Jo ...
P.S. I am using Windows 8.1 ...