[Tutor] Tutor Digest, Vol 34, Issue 11

Mon Dec 11 00:41:13 CET 2006

tutor-request at python.org escreveu:
>
> Message: 7
> Date: Wed, 6 Dec 2006 09:38:59 -0000
> From: "Tim Golden" <Tim.Golden at viacom-outdoor.co.uk>
> Subject: Re: [Tutor] How to kill an app from python on windows? (Tim
> 	Golden)
> To: <tutor at python.org>
> Message-ID:
> 	<CCAC78D42E32184F8E26DC163DB98306C1B670 at vogbs009.gb.vo.local>
> Content-Type: text/plain;	charset="us-ascii"
>
> [Tim Golden]
> | > This link may get you started:
> | >
> | > http://effbot.org/pyfaq/how-do-i-emulate-os-kill-in-windows.htm
> | >
> | > although it may not apply, depending on the exact
> | > circumstances of what you're doing.
>
> [Paulino]
> | Thank you Tim,
> | 
> | How do i get the pid of the process?
>
> I'm going to cheat slightly, because I'm fairly sure
> this is a sticky area, by going back to your original
> requirement. I think that what you want to do is:
>
> 1) Use a document name to start the appropriate 
>    viewer/app (without knowing what that app is)
>
> 2) Close that app at will so the file can be updated.
>
> The problem is that while os.startfile will satisfy (1),
> it returns no useful information about the process it
> started. And that's because the underlying win32api,
> ShellExecute, doesn't return anything useful. This is
> specifically stated in the MS documentation.
>
> What you can do, though, is to determine the correct
> executable, setup a new process under your control,
> and then terminate it when you want. This assume you
> have the pywin32 extensions available. In the example
> below, I'm using an .html file to demonstrate the point,
> because I can generate one so the code works for both
> of us. Obviously, it should work for any recognised
> document type, including .pdf.
>
> <code - loosely tested>
> import os, sys
> import win32api
> import win32process
> import win32event
>
> filename = os.path.abspath ("temp.html")
> open (filename, "w").write ("<html><body><p>Hello,
> world!</p></body></html>")
>
> hInstance, exe_filename = win32api.FindExecutable (filename)
> print exe_filename, filename
>
> hProcess, hThread, pid, tid = win32process.CreateProcess (
>   None,
>   '"%s" "%s2' % (exe_filename, filename),
>   None, # process attributes
>   None, # process attributes
>   0, # inherit handles
>   0, # creation flags
>   None, # new environment
>   None, # current directory
>   win32process.STARTUPINFO ()
> )
> print pid
>
> #
> # This snippet waits until the app closes
> #
> win32event.WaitForSingleObject (hProcess, win32event.INFINITE)
>
> #
> # To kill the process either use the hProcess
> # above, or retrieve it from the pid using:
> #
> hProcess = win32api.OpenProcess (1, 0, pid)
>
> #
> # and then
> #
> win32process.TerminateProcess (hProcess, 0)
>
> </code>
>
> ________________________________________________________________________
>   
That's great!! It work's

Thank you so much!

I got Python programming on win32, but I hadn't found the solution yet...

Paulino