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I can get X and Y of the active window with xdotool getwindowgeometry --shell $(xdotool getactivewindow). How do I do a backwards process - find window id given its X and Y? I'm only interested in the topmost window, not the one that may be hidden underneath the one on top.

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  • Do you want the id of the active window or of the one at a particular position irrespective of whether it is active? – terdon♦ Jan 18 '15 at 18:08
  • @terdon, second - otherwise I'd just use getactivewindow – Fluffy Jan 19 '15 at 8:46
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I've figured it out myself:

xdotool mousemove 500 100 getmouselocation --shell mousemove restore

This briefly moves the mouse to the specified position (x=500, y=100 in this example), prints WINDOW which is the windowid on top, then moves the mouse back.

This is probably not the intended usage of mousemove, but I could not find any better way to do what I wanted.

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