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WinAlarm: Difference between revisions

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Possible errors from [[WinGetLastError]] are:
Possible errors from [[WinGetLastError]] are:
* [[OS2 API:PMI:error#PM_INVALID_HWND|PM_INVALID_HWND]]
* [[PM Error Codes#PM_INVALID_HWND|PM_INVALID_HWND]]
* [[OS2 API:PMI:error#PM_INVALID_PARAM|PM_INVALID_PARAM]]
* [[PM Error Codes#PM_INVALID_PARAM|PM_INVALID_PARAM]]


== Module ==
== Module ==

Revision as of 02:17, 1 December 2019

Generates an audible alarm.

Syntax

WinAlarm(desktopHandle, alarmStyle)

Parameters

desktopHandle - HWND - input
The desktop handle.
alarmStyle - ULONG - input
The alarm style to be.

Constants

These are the differing alarm tone constants:

  • WA_WARNING
  • WA_NOTE
  • WA_ERROR

The frequency of these alarm types can be changed with WinSetSysValue. The alarm frequency range is 0x0025 through 0x7FFF. If SV_ALARM is set to FALSE then no alarm will sound.

Returns

This function returns a BOOL with the values of:

Possible errors from WinGetLastError are:

Module

DOSCALLS

Define (C/C++)

INCL_WINDIALOGS or INCL_WIN or INCL_PM or INCL_COMMON

Calling Convention

Cdecl32

Example Code

...
APIRET rc;
rc = WinAlarm (HWND_DESKTOP, WA_NOTE);
...

Related Functions

Notes

WinAlarm function also used for multimedia subsystem notification.