How to find out a window's process ID?

[Kevin Krammer]

On Monday 08 December 2003 18:24, Josep Febrer wrote:
> A Divendres 28 Novembre 2003 07:47, TK va escriure:
> > There are tools to do it on other platforms, but I don't how to do it in
> > KDE, or should I say in XFree86?
>
> To know the PID from the active window you can try something like this:
>
> window=`xprop -root | grep '_NET_ACTIVE_WINDOW(WINDOW)' | awk '{print
> $5;}'` pid=`xprop -id $window | grep NET_WM_PID | awk '{print $3;}'`
>
> Josep

KWin class 
http://developer.kde.org/documentation/library/3.1-api/kdecore/html/classKWin.html
can tell you the PID of the process.
Not sure if this works with remote processes.

Cheers,
Kevin
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