Help passing a reference to a pointer several times
 

I am trying to pass a reference through a couple of layers of
functions, and I am getting a C2664 Error.

Here is my setup:

I have a class [ c_ClassOne ] which contains a pointer to an object [
p_MyObject ].

I have a second class [ c_ClassTwo ] which has a function [
FunctionOne(MYOBJECTTYPE* myObject) ]


I have a third class [ c_ClassThree ] which also has a function [
FunctionTwo(MYOBJECTTYPE* myObject) ]


I then try to pass the reference to the pointer p_MyObject from
c_ClassOne to be used within FunctionTwo.

So in a function within c_ClassOne I create an instance of c_ClassTwo [
myClassTwo ]
I then pass a reference to p_MyObject as follows:
myClassTwo.FunctionOne(&p_MyObject);

Then within FunctionOne, I create an Instance of c_ClassThree [
myClassThree ]
I then attempt to once again pass the reference to p_MyObject:
myClassThree.FunctionTwo(&p_MyObject);

On that line I get the following error:
error C2664: 'CD3DInitialize::Enumerate' : cannot convert parameter 1
from 'LPDIRECT3D9 ** ' to 'LPDIRECT3D9'

Note: LPDIRECT3D9 is the Object Type of p_MyObject.


Can anyone explain what I am doing wrong, and help me understand how to
do it correctly?

Thanks,

Jody

Re: Help passing a reference to a pointer several times
 

"jblau" <jodyblau@gmail.com> wrote in news:1168756044.456046.154740
@l53g2000cwa.googlegroups.com:

> I am trying to pass a reference through a couple of layers of
> functions, and I am getting a C2664 Error.
>
> Here is my setup:
>

[snip words...]


>
> Can anyone explain what I am doing wrong, and help me understand how to
> do it correctly?

Too many words... not enough code. Provide a compilable and minimal piece
of example code which shows your problem. Based on what you seem to have
described, you're not using C++ terminology correctly... you seem to be
freely swapping between "reference" and "pointer". They're not the same
thing. And you don't appear to be following your own coding standards.

Re: Help passing a reference to a pointer several times
 

jblau wrote:
> I am trying to pass a reference through a couple of layers of
> functions, and I am getting a C2664 Error.
>
> Here is my setup:
>
> I have a class [ c_ClassOne ] which contains a pointer to an object [
> p_MyObject ].
>
> I have a second class [ c_ClassTwo ] which has a function [
> FunctionOne(MYOBJECTTYPE* myObject) ]
>
>
> I have a third class [ c_ClassThree ] which also has a function [
> FunctionTwo(MYOBJECTTYPE* myObject) ]
>
>
> I then try to pass the reference to the pointer p_MyObject from
> c_ClassOne to be used within FunctionTwo.
>
> So in a function within c_ClassOne I create an instance of c_ClassTwo [
> myClassTwo ]
> I then pass a reference to p_MyObject as follows:
> myClassTwo.FunctionOne(&p_MyObject);
>
You are not, you are passing the address of the pointer. Just pass it
on through if all of your functions take a MYOBJECTTYPE*.

--
Ian Collins.