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Text File  |  1995-04-14  |  2KB  |  47 lines
  1. /*DDK*************************************************************************/
  2. /*                                                                           */
  3. /* COPYRIGHT (C) Microsoft Corporation, 1989                                 */
  4. /* COPYRIGHT    Copyright (C) 1995 IBM Corporation                           */
  5. /*                                                                           */
  6. /*    The following IBM OS/2 WARP source code is provided to you solely for  */
  7. /*    the purpose of assisting you in your development of OS/2 WARP device   */
  8. /*    drivers. You may use this code in accordance with the IBM License      */
  9. /*    Agreement provided in the IBM Device Driver Source Kit for OS/2. This  */
  10. /*    Copyright statement may not be removed.                                */
  11. /*                                                                           */
  12. /*****************************************************************************/
  13. /***    beep.h
  14.  *
  15.  *      SCCSID = @(#)beep.h    6.2 91/02/18
  16.  *
  17.  *      Timer Beep Service Public Constants and Prototypes
  18.  *
  19.  *      MODIFICATION HISTORY
  20.  *    01/03/89 MTS    Created.
  21.  */
  22. /****************************************************************************/
  23. /*                                                                          */
  24. /*                                                                          */
  25. /*                                                                          */
  26. /****************************************************************************/
  27.  
  28.  
  29. //      Beep Services
  30.  
  31. #define BEEP_OFF                0
  32. #define BEEP_TIMED        1
  33.  
  34. //      Beep Public Constants
  35.  
  36. #define DOSBEEP_FREQLO        0x0025    //DosBeep low freq. limit (37 Hz)
  37. #define DOSBEEP_FREQHI        0x7fff    //DosBeep high freq. limit (32767 Hz)
  38.  
  39.  
  40. //c-begin
  41. /***    exported functions
  42.  */
  43. ULONG w_Beep(ULONG, ULONG);
  44. ULONG BeepVDM(ULONG, ULONG);
  45. ULONG BeepPreempt(ULONG, ULONG, ULONG);
  46. //c-end
  47.