How to get all column data on row clicked

[wirasto]

Example, I have a QTreeView data like this

1 Deb
2    Debian   Ubuntu   Mepis
3 Rpm
4    RedHat   Fedora   Mandriva
5 Tar.gz
6    Linux    Unix	 BSD

1 Deb
2    Debian   Ubuntu   Mepis
3 Rpm
4    RedHat   Fedora   Mandriva
5 Tar.gz
6    Linux    Unix	 BSD

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I don't know how to get all column data if one row clicked. Sample if i click row number 6. I get result

Linux
Unix
BSD

Need your help...