Queries the item at position @item_index in @model for the attribute specified by @attribute.
If @expected_type is non-%NULL then it specifies the expected type of the attribute. If it is %NULL then any type will be accepted.
If the attribute exists and matches @expected_type (or if the expected type is unspecified) then the value is returned.
If the attribute does not exist, or does not match the expected type then %NULL is returned.
the index of the item
the attribute to query
the expected type of the attribute, or %NULL
Return: the value of the attribute
2.32
See Implementation
Queries the item at position @item_index in @model for the attribute specified by @attribute.
If @expected_type is non-%NULL then it specifies the expected type of the attribute. If it is %NULL then any type will be accepted.
If the attribute exists and matches @expected_type (or if the expected type is unspecified) then the value is returned.
If the attribute does not exist, or does not match the expected type then %NULL is returned.