PrfQueryProfileSize - Syntax

This function obtains the size in bytes of the value of a specified key for a specified application in the profile.

#define INCL_WINSHELLDATA /* Or use INCL_WIN, INCL_PM, */
#include <os2.h>

HINI      hini;        /*  Initialization-file handle. */
PSZ       pszApp;      /*  Application name. */
PSZ       pszKey;      /*  Key name. */
PULONG    pulDataLen;  /*  Data length. */
BOOL      rc;          /*  Success indicator. */

rc = PrfQueryProfileSize(hini, pszApp, pszKey,
       pulDataLen);