Creates an expression that looks up a property.
The object to use is found by evaluating the expression, or using the this argument when expression is NULL.
If the resulting object conforms to this_type, its property named property_name will be queried. Otherwise, this expression's evaluation will fail.
The given this_type must have a property with property_name.
The type to expect for the this type
Expression to evaluate to get the object to query or NULL to query the this object
name of the property
a new gtk.expression.Expression
Creates an expression that looks up a property.
The object to use is found by evaluating the expression, or using the this argument when expression is NULL.
If the resulting object conforms to this_type, its property named property_name will be queried. Otherwise, this expression's evaluation will fail.
The given this_type must have a property with property_name.