Piet van Oostrum wrote: >>>>>> sreekant <[EMAIL PROTECTED]> (S) wrote: > >> S> I decided in the end to use fork and all is well. > > But how are you doing the callback then? From your code it looks like the > callback is called after the external command finishes. The callback would > then be called in the child process, not in the parent process, I think. Or > do you have a solution for that? I am not calling the callback now.
It is a pygtk interface to octavia music description language I wrote. I have a button "Play" which reads the text in the gtk.TextView , converts it to midi and calls fluidsynth with the resulting midi file. I want the ui to be accessible during the midi play because, the midi play can some times be a long piece of music. I also have a log window which is another textview. I was loading the result of res=os.popen3(my_command) report=res[1].read()+'\n'+res[2].read() logwindow gets the report added to it. However now I just put a message saying "playing midi" I don't know any way out at the moment. ################ What I need is when I click on the play button, the fileplay(widget) function that gets called should be able to start a new thread or a fork which executes the commands and updates the ui.logwindow which is a textview with the output of os.popen3. During the execution the ui should be usable. Please see the scala program in this package http://sourceforge.net/projects/octavia . Checkout fileplay() function in the most latest version 0.22 . I don't want to attach the whole program to this message and annoy everyone. Below is the function causing probs. Ta sree ############################### def fileplay(x): global conf,bdir,bgplay lbuf.delete(lbuf.get_start_iter(),lbuf.get_end_iter()) dat=buf.get_text(buf.get_start_iter(),buf.get_end_iter()) if not len(dat)>0: return #see if the temporary dir to save temp gmc and midi exists #if not create it tempf=bdir+os.sep+'temp'+os.sep try: if not os.path.exists(tempf): os.mkdir(tempf) except: addlog(traceback.format_exc()) return #save octavia in to a count+1 text file if os.path.exists(tempf): try: fbase=tempf+getcnt() fmidi=fbase+'.midi' f=open(fbase,'w') f.write(dat) f.close() except: addlog(traceback.format_exc()) #run octavia addlog("Compiling to midi") if conf.has_key('octavia'): text2midi=conf['octavia'] else: addlog("Config doesn't exist. Trying default octavia") text2midi='octavia' try: res=os.popen3(text2midi+' '+fbase+' '+fmidi) addlog(res[1].read()+res[2].read()) except: addlog(traceback.format_exc()) return # if midi exists, we succeded. play midi if os.path.exists(fmidi): addlog("Trying to play midi") if conf.has_key('midiplayer'): midiplay=conf['midiplayer'] else: addlog("Config doesn't exist. Trying default timidity") midiplay='timidity' # start playing in a fork pid=os.fork() if pid: pass else: os.popen3(midiplay+' '+fmidi) sys.exit(0) -- http://mail.python.org/mailman/listinfo/python-list
