problems in creating the daemon process

[bhavanasi]

Am sending my program through this attachment..i created some widgets by wxpython ..i got so many
problems in that..

1)when i click a 'start' button it has to begin a background process to display 'aodv.log' file information in text field.displaying must be continues process so i need daemon for this...i created by 'fork()' command, but for continues while loop it is not responding.....but for single instance it is working.

2)when i press 'start' button again(already daemon is running in background),i need to start the same process again,,so i used as 'kill()' method to stop process but in my program it is killing the original process...



my program is in this link

http://www.mediafire.com/file/mj4hqay8qivb86z/mainwindow.py

my aodv file is like thisss--------------->



3 0.743297 192.168.1.102 255.255.255.255 AODV Route Reply, D: 192.168.1.102, O: 192.168.1.102 Hcnt=0 DSN=1 Lifetime=2000
6 1.770342 192.168.1.102 255.255.255.255 AODV Route Reply, D: 192.168.1.102, O: 192.168.1.102 Hcnt=0 DSN=1 Lifetime=2000
9 2.810353 192.168.1.102 255.255.255.255 AODV Route Reply, D: 192.168.1.102, O: 192.168.1.102 Hcnt=0 DSN=1 Lifetime=2000
12 3.846412 192.168.1.102 255.255.255.255 AODV Route Reply, D: 192.168.1.102, O: 192.168.1.102 Hcnt=0 DSN=1 Lifetime=2000
15 4.870408 192.168.1.102 255.255.255.255 AODV Route Reply, D: 192.168.1.102, O: 192.168.1.102 Hcnt=0 DSN=1 Lifetime=2000
18 5.922428 192.168.1.102 255.255.255.255 AODV Route Reply, D: 192.168.1.102, O: 192.168.1.102 Hcnt=0 DSN=1 Lifetime=2000
21 6.943461 192.168.1.102 255.255.255.255 AODV Route Reply, D: 192.168.1.102, O: 192.168.1.102 Hcnt=0 DSN=1 Lifetime=2000
24 7.982517 192.168.1.102 255.255.255.255 AODV Route Reply, D: 192.168.1.102, O: 192.168.1.102 Hcnt=0 DSN=1 Lifetime=2000
27 9.006551 192.168.1.108 255.255.255.255 AODV Route Reply, D: 192.168.1.102, O: 192.168.1.102 Hcnt=0 DSN=1 Lifetime=2000
30 10.022574 192.168.1.104 255.255.255.255 AODV Route Reply, D: 192.168.1.102, O: 192.168.1.102 Hcnt=0 DSN=1 Lifetime=2000




please go through it and help me ..in this program...