Returns the raw value associated with @key under @group_name.
Use g_key_file_get_string() to retrieve an unescaped UTF-8 string.
In the event the key cannot be found, %NULL is returned and
@error is set to #G_KEY_FILE_ERROR_KEY_NOT_FOUND. In the
event that the @group_name cannot be found, %NULL is returned
and @error is set to #G_KEY_FILE_ERROR_GROUP_NOT_FOUND.
Returns the raw value associated with @key under @group_name. Use g_key_file_get_string() to retrieve an unescaped UTF-8 string.
In the event the key cannot be found, %NULL is returned and @error is set to #G_KEY_FILE_ERROR_KEY_NOT_FOUND. In the event that the @group_name cannot be found, %NULL is returned and @error is set to #G_KEY_FILE_ERROR_GROUP_NOT_FOUND.