Reads the page setup from the group @group_name in the key file @key_file.
the #GKeyFile to retrieve the page_setup from
the name of the group in the key_file to read, or %NULL to use the default name “Page Setup”
%TRUE on success
GException on failure.
2.14
See Implementation
Reads the page setup from the group @group_name in the key file @key_file.