This example creates an Atom Table of default size, adds the atom "newatom" to the new table, and then destroys the table.

#define INCL_WINATOM         /* Window Atom functions                 */
#include <os2.h>

ATOM      atom;              /* New atom value                        */
HATOMTBL  hatomtblAtomTbl;   /* Atom-table handle                     */
HATOMTBL  hatomtblDestroy;   /* Result of destroy table               */
char      pszAtomName[10];   /* Atom name                             */
ULONG     ulInitial = 0;     /* Initial atom table size (use default) */
ULONG     ulBuckets = 0;     /* Size of hash table (use default)      */

/* Create an atom table of the default size */
hatomtblAtomTbl = WinCreateAtomTable(ulInitial, ulBuckets);

/* Define the name of the new atom and add it to the table */
strcpy(pszAtomName,"newatom");
atom = WinAddAtom(hatomtblAtomTbl, pszAtomName);
hatomtblDestroy = WinDestroyAtomTable(hatomtblAtomTbl);