Lets try that again: Need help with pure virtual base class

[William Gifford <wegifford@fortlewis.edu>]

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Sorry about the prior post accidentally<sp> hit the send now button.  
Crap!!  Ok, I'll try again this time a tad more code.  Oh, and I would 
be more than welcome to send the source to anyone who might know the 
problem.  Probably be better to look at the source anyway and tell me 
what a hack I am.

//////////////////////////////////////////////////////////////////////
To anybody who knows,

   Ok here we go. I am trying to create a base class through which all 
of my objects to be drawn to the screen will be derived from. So I will 
try to break the problem down accordingly -> I instantiate a derived 
object and a pointer to the base object and set the address of the 
pointer to the derived object like so:

CRect myRect;
CObject *object;
object = &myRect;

Everything is good up to this part. I then call on my engine to append 
the object to a list like so:

Engine.AppendObjectToList(object);

The CEngine method above takes as an argument a pointer to an object and 

the definition looks like this.

class CEngine{

private:
   //this is where the list will be CObject *polyObject[MAX];
   //just trying to get one object up.
CObject *polyObject;
public:
void AppendObjectToList(CObject *object){
     polyObject = object;
}
}; 

I then call draw on the polyObject by using the this operator -> 
(polyObject->drawObject();) and keep getting unhandled exception at some 
memory address blah, blah, blah.  Anyway I am stepping through the code 
and and the vfptr isn't being assigned.

My base class looks like this.

class CObject{
 private:

 publice:
    virtual void drawObject() = 0;
    virtual void moveObject() = 0;
};

I think this is the right declaration for a abstract class.  This is all 
probably jibberish so if you want to look at my source give your email 
address being that I can't figure out how to append files and put them 
up on the list.  Also I could just cut and paste the code in if someone 
would like.

Thanks ahead of time,

Will

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