Returns the values associated with key under group_name.
In the event the key cannot be found, null is returned and throws
is set to KEY_NOT_FOUND. In the event that the
group_name cannot be found, null is returned and throws
is set to GROUP_NOT_FOUND.
| this |
a KeyFile |
| group_name |
a group name |
| key |
a key |
| length |
return location for the number of returned strings, or null |
|
a null-terminated string array or null if the specified key cannot be found. The array should be freed with strfreev. |