On Tue, 16 Sep 2003, Owen Taylor wrote: >> > i am new in Xwin programming. I made an enumwindow function. For >> > each visible window i get a Window structure. My main consern is to get >> > the process id of the window and i am puzzled the way i should terminate >> > that process if necessery. >> >> To elaborate on Mark's response, the REASON you cannot get a process ID for a >> given window is that, in the X world, that window might have been generated by >> a program on an entirely different computer, running an entirely different >> operating system, across the network. > >That being said, the ICCCM defines the WM_CLIENT_MACHINE property: > >WM_CLIENT_MACHINE(STRING) = "poincare.devel.redhat.com" > >and the freedesktop.org WM spec defines the _NET_WM_PID property: > >_NET_WM_PID(CARDINAL) = 23397 > >So, if the toolkit that creates the window supports these >specifications, you can find out the client machine and process ID.
The concept of a PID however is not portable across all operating systems 100%. Also there's the issue of 16bit vs. 32bit PID, or perhaps 64bit PID even. It's also likely some OS's out there don't have a concept of a PID, such as running Desqview/X on an MSDOS system. Granted, that's an unlikely scenario in modern times, but I'm not sure relying on a PID being available or relying on a POSIX type of OS being on the remote system is a good idea. -- Mike A. Harris _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
