PrfWriteProfileString - Example Code

This function writes and then reads a string written to the profile associated with the application STRINGY.EXE.

/* This programs writes and then read string data to a profile.  */
/* Some error checking has been omitted for brevity.             */

#define INCL_WINSHELLDATA
#define INCL_WINERRORS
#define INCL_DOSERRORS
#include <os2.h>
#include <stdio.h>
#include <string.h>

INT main(VOID) {

    HAB     hab           = NULLHANDLE;
    HINI    hini          = NULLHANDLE;
    PSZ     pszFileName   = "STRINGY.INI";
    BOOL    rc            = TRUE;
    ULONG   i             = 0L;
    PSZ     pszAppName    = "STRINGY.EXE";
    PSZ     pszKeyName    = "STATUS";
    PSZ     pszString     = "The string is alive.";
    PSZ     pszStringRead = NULL;
    APIRET  ret           = NO_ERROR;
    ULONG   ulDataSize    = 0L;

    hab = WinInitialize( 0 );

    hini = PrfOpenProfile( hab, pszFileName );

    rc = PrfWriteProfileString( hini, pszAppName, pszKeyName, pszString);

    if(rc == FALSE) {
        printf("PrfWriteProfileString error code: %X\n", WinGetLastError(hab));
        return 1;
    }

    /* Retrieve size of string in profile, and allocate memory for it */

    rc = PrfQueryProfileSize( hini, pszAppName, pszKeyName, &ulDataSize );
    ret = DosAllocMem( (PPVOID)&pszStringRead, ulDataSize,
                       (ULONG)PAG_COMMIT | PAG_READ | PAG_WRITE );

    /* Retrieve data string */

    rc = PrfQueryProfileString( hini, pszAppName, pszKeyName,
                               (PSZ)"Error Retrieving Data",
                               (PVOID) pszStringRead,
                               ulDataSize );

    if(rc==FALSE) {
        printf("PrfQueryProfileData error code: %X\n", WinGetLastError(hab));
        return 1;
    }

    printf("Profile String read: '%s'\n", pszStringRead );

    PrfCloseProfile( hini );        /* Close the profile    */
    DosFreeMem( pszStringRead );    /* Free memory          */
    return NO_ERROR;             /* Return to the caller */

}