?
Solved

Directx and Borland C++ Builder

Posted on 1997-08-29
1
Medium Priority
?
619 Views
Last Modified: 2012-05-04
I am trying to compile the "hello world" tutorial of the Direct3d retained version on C++ Builder, but it says that the lpVtbl is not a member of "IDirect..." (this error shows to each one of them used). Everything looks all right, it seems to be declared when the DECLARE_INTERFACE macro (defined in objbase.h) is called.
Just tried now another example (globe.c) and the same thing happened.
0
Comment
Question by:Ventania
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 3

Accepted Solution

by:
msmits earned 200 total points
ID: 1168394
The lpVtbl is only used when you use the C interface to the OLE stuff. When using C++ like in C++Builder, the lpVtbl is not used, virtual functions are instead.
I think your problem may be that the example code is in C and not C++. You must coerce the C++ compiler into going into C mode.

0

Featured Post

Free Tool: Port Scanner

Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Unlike C#, C++ doesn't have native support for sealing classes (so they cannot be sub-classed). At the cost of a virtual base class pointer it is possible to implement a pseudo sealing mechanism The trick is to virtually inherit from a base class…
In days of old, returning something by value from a function in C++ was necessarily avoided because it would, invariably, involve one or even two copies of the object being created and potentially costly calls to a copy-constructor and destructor. A…
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question