how to use setProcessEnvironment ( const QProcessEnvironment & env) in Linux?

[Raul]

What "failure" are you talking about?

Note that QProcessEnvironment was added to Qt 4.6. What version of Qt are you using?

I'm using Qt 4.6.2.my problem is that i didn't understand the use of setProcessEnvironment ( const QProcessEnvironment & env) indeed.especially the insert