c - ListEntry class usage - 


  #include <windows.h>   #include "stdafx.h"   #include "list.h"    typedef struct list_node   {      list_entry list;      int val1;   }list_node, *plist_node;    int _tmain(int argc, _tchar* argv[])   {       int = 0;       plist_node pnewnode;      pnewnode = new list_node;        list_entry head;       initializelisthead(&head);       (i = 0; < 3; i++)      {           pnewnode = new list_node;          pnewnode->val1 = i;          inserttaillist(&head, &pnewnode->list);          pnewnode = null;      }       while (!islistempty(&head))      {           plist_entry removenode = removeheadlist(&head);           plist_node mydatanode = (plist_node)containing_record                                                      (removenode,list_node,val1);           printf("%d\n", mydatanode->val1);      }        return 0;    }

with code not getting val1 data gives me junk value?any thing wrong doing?

please read documentation containing_record. third parameter described as:

field [in]

the name of field pointed address , contained in structure of type type.

i suspect code:

plist_entry removenode = removeheadlist(&head);  plist_node mydatanode = (plist_node)containing_record(removenode,list_node,val1);

is incorrect. because third parameter containing_record not of same type address passing in. doesn't make sense val1 either. needs figure out address of list_node address of list_entry contained in list_node.

i think using:

plist_entry removenode = removeheadlist(&head);  plist_node mydatanode = (plist_node)containing_record(removenode,list_node,list);

should solve problem.


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