dcmartin@cheddar.cs.wisc.edu (David C. Martin) (06/29/90)
I am using InterViews under AT&T 2.0 and get the following error when attempting to compile: --- SlotField* sfp; sfp = new SlotField(ftype->name, fname); --> Insert(sfp); sfp->Bind(ftype, vp, count); --- "TupleField.e", line 124: error: cast: SlotField* -> base Interactor*; Interactor is base more than once *** Error code 2 Stop. --- The code above is in a virtual function of TupleField that allocates SlotField instances and then utilizes the non-virtual function Insert() that is defined by the class Interactor. This is my inheritence hierarchy: --- class Field : virtual public Interactor class SceneField : public Field, virtual public Scene class MonoSceneField : public SceneField, virtual public MonoScene class BoxField : public SceneField, virtual public Box class HBoxField : public BoxField, virtual public HBox class VBoxField : public BoxField, virtual public VBox class SlotField : public HBoxField class TupleField : public VBoxField --- What I am attempting to do is leverage the functionality of InterViews w/ some additional techniques for walking database objects (i.e. using IV for displaying values from the DBMS). Could someone explain to me why I am getting this error, and if this hierarchy is a correct use of the virtual base class system? Thanks dcm -- To rescue for human society the native values of rural life. -- Computer Sciences Department mail: dcmartin@cs.wisc.edu University of Wisconsin - Madison uucp: uunet!uwvax!dcmartin 1210 W. Dayton St, Madison WI 53706 at&t: 608/262-6624 -- To rescue for human society the native values of rural life. -- Computer Sciences Department mail: dcmartin@cs.wisc.edu University of Wisconsin - Madison uucp: uunet!uwvax!dcmartin 1210 W. Dayton St, Madison WI 53706 at&t: 608/262-6624