DosBeep

To produce a beep from the speaker DosBeep is called with the frequency and the length of the beep as arguments.

Syntax

DosBeep( ulFrequency, ulDuration )

Parameters

ULONG ulFrequency (input)

The frequency in Hertz (Hz) of the beep to be generated. In the range of 0x25 to 0x7FFF (37 to 32767).

ULONG ulDuration (input)

The duration of the beep to be generated. In milliseconds.

Returns

APIRET rc

• 0 NO_ERROR
• 395 ERROR_INVALID_FREQUENCY

Include Info

#define INCL_DOSPROCESS
#include <os2.h>

Sample Code

#define INCL_DOSPROCESS
#include <os2.h>
#include <stdio.h>    /* For printf */

if(DosBeep(400, 300)) /* Beep a 400 Hz tone for 0.3 seconds */
{
    printf("Invalid frequency to DosBeep()\n"); /* In case of error, should not */
}                                               /* be called now when the       */
                                                /* frequency is 400 Hz          */

See Also

• DosDevConfig
• DosDevIOCtl
• DosPhysicalDisk