get_integer

Returns the value associated with key under group_name as an integer.

If key cannot be found then [error@GLib.KeyFileError.KEY_NOT_FOUND] is returned. Likewise, if the value associated with key cannot be interpreted as an integer, or is out of range for a `gint`, then [error@GLib.KeyFileError.INVALID_VALUE] is returned.

Parameters:

this	a key file
group_name	a group name
key	a key

Returns:

the value associated with the key as an integer, or `0` if the key was not found or could not be parsed.