Create a new process with the given flags and argument list.
The argument list is expected to be NULL-terminated.
commandline arguments for the subprocess
flags that define the behaviour of the subprocess
A newly created gio.Subprocess, or NULL on error (and error will be set)
GException on failure. ConstructionException GTK+ fails to create the object.
2.40
Create a new process with the given flags and argument list.
The argument list is expected to be NULL-terminated.