Creates a new closure which invokes the function found at the offset @struct_offset in the class structure of the interface or classed type identified by @itype.
the #GType identifier of an interface or classed type
the offset of the member function of @itype's class structure which is to be invoked by the new closure
a new #GCClosure
See Implementation
Creates a new closure which invokes the function found at the offset @struct_offset in the class structure of the interface or classed type identified by @itype.