Extern - dereferencing pointer to incomplete type.

I have three files.
>
>
graph.h:
>
My header file where I have typedef for my structure and function
delcaration
>
typedef struct _ipc_actors ipc_graph_actors;
typedef ipc_graph_type *ipc_graph_pointer;
>
ipc_graph_pointer ipc_graph_new(graph_pointer,char *, char *, char *,
char *, char *);
>
graph.c:
>
>
My funciton is implemented in this file. And also my sturcture defition
are in this file.
>
main.c:
>
Here I am calling my fuction ipc_graph_new(graph_pointer,char *, char
*, char *, char *, char *);
>
This return a one pointer which is pointer to struture which I have
define din graph.c
>
But when I try to use this pointer to access the attributes of this
structure it gives me following error:
>
dereferencing pointer to incomplete type.
>
I think I have to use extern somewhere, but I am not sure.
>

friend.05 wrote:You don't have to ask twice.
>
>
>>>>>>>>>>>>>you wish to access its members.
>
Put the definition in the common header.
>
--
Ian Collins.

>
On Nov 22, 12:04 pm, Ian Collins <ian-n...@hotmail.comwrote:
>Hai ian ,
What u said is correct that compiler has to see the definition of the
structure and it has to be placed in common headerfile, but in a good
design of the projects it is said to have the definitions of
datastructures in a c file and their declarations in relevent header
files. isnt there any way to make code error free this way?
>

>
What u said is correct that compiler has to see the definition of
the structure and it has to be placed in common headerfile, but in
a good design of the projects it is said to have the definitions
of datastructures in a c file and their declarations in relevent
header files. isnt there any way to make code error free this way?

vamshi wrote:
>abbreviations.
>
--
A: Because it fouls the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet and in e-mail?

Yes i need to keep structure definition opaque.
>
So wht midification I have to do so that I do not get an error.
>
>
>
>
>
On Nov 22, 5:48 am, CBFalconer <cbfalco...@yahoo.comwrote:

>
Yes i need to keep structure definition opaque.
>
So wht midification I have to do so that I do not get an error.

Yes i need to keep structure definition opaque.
>
So wht midification I have to do so that I do not get an error.