WinAlarm

WinAlarm

WinAlarm(desktopHandle, alarmStyle)

Generates an audible alarm.

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:

• TRUE
• FALSE

Possible errors from WinGetLastError are:

• PM_INVALID_HWND
• PM_INVALID_PARAM

Module

DOSCALLS

Define (C/C++)

INCL_WINDIALOGS or INCL_WIN or INCL_PM or INCL_COMMON

Calling conversion

Cdecl32

Example Code

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

Related Functions

WinFlashWindow WinMessageBox

Notes

WinAlarm function also used for multimedia subsystem notification.