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:mod:`winsound` --- Sound-playing interface for Windows
=======================================================
.. module:: winsound
:platform: Windows
:synopsis: Access to the sound-playing machinery for Windows.
.. moduleauthor:: Toby Dickenson <htrd90@zepler.org>
.. sectionauthor:: Fred L. Drake, Jr. <fdrake@acm.org>
The :mod:`winsound` module provides access to the basic sound-playing machinery
provided by Windows platforms. It includes functions and several constants.
.. function:: Beep(frequency, duration)
Beep the PC's speaker. The *frequency* parameter specifies frequency, in hertz,
of the sound, and must be in the range 37 through 32,767. The *duration*
parameter specifies the number of milliseconds the sound should last. If the
system is not able to beep the speaker, :exc:`RuntimeError` is raised.
.. note::
Under Windows 95 and 98, the Windows :cfunc:`Beep` function exists but is
useless (it ignores its arguments). In that case Python simulates it via direct
port manipulation (added in version 2.1). It's unknown whether that will work
on all systems.
.. function:: PlaySound(sound, flags)
Call the underlying :cfunc:`PlaySound` function from the Platform API. The
*sound* parameter may be a filename, audio data as a string, or ``None``. Its
interpretation depends on the value of *flags*, which can be a bitwise ORed
combination of the constants described below. If the system indicates an error,
:exc:`RuntimeError` is raised.
.. function:: MessageBeep([type=MB_OK])
Call the underlying :cfunc:`MessageBeep` function from the Platform API. This
plays a sound as specified in the registry. The *type* argument specifies which
sound to play; possible values are ``-1``, ``MB_ICONASTERISK``,
``MB_ICONEXCLAMATION``, ``MB_ICONHAND``, ``MB_ICONQUESTION``, and ``MB_OK``, all
described below. The value ``-1`` produces a "simple beep"; this is the final
fallback if a sound cannot be played otherwise.
.. data:: SND_FILENAME
The *sound* parameter is the name of a WAV file. Do not use with
:const:`SND_ALIAS`.
.. data:: SND_ALIAS
The *sound* parameter is a sound association name from the registry. If the
registry contains no such name, play the system default sound unless
:const:`SND_NODEFAULT` is also specified. If no default sound is registered,
raise :exc:`RuntimeError`. Do not use with :const:`SND_FILENAME`.
All Win32 systems support at least the following; most systems support many
more:
+--------------------------+----------------------------------------+
| :func:`PlaySound` *name* | Corresponding Control Panel Sound name |
+==========================+========================================+
| ``'SystemAsterisk'`` | Asterisk |
+--------------------------+----------------------------------------+
| ``'SystemExclamation'`` | Exclamation |
+--------------------------+----------------------------------------+
| ``'SystemExit'`` | Exit Windows |
+--------------------------+----------------------------------------+
| ``'SystemHand'`` | Critical Stop |
+--------------------------+----------------------------------------+
| ``'SystemQuestion'`` | Question |
+--------------------------+----------------------------------------+
For example::
import winsound
# Play Windows exit sound.
winsound.PlaySound("SystemExit", winsound.SND_ALIAS)
# Probably play Windows default sound, if any is registered (because
# "*" probably isn't the registered name of any sound).
winsound.PlaySound("*", winsound.SND_ALIAS)
.. data:: SND_LOOP
Play the sound repeatedly. The :const:`SND_ASYNC` flag must also be used to
avoid blocking. Cannot be used with :const:`SND_MEMORY`.
.. data:: SND_MEMORY
The *sound* parameter to :func:`PlaySound` is a memory image of a WAV file, as a
string.
.. note::
This module does not support playing from a memory image asynchronously, so a
combination of this flag and :const:`SND_ASYNC` will raise :exc:`RuntimeError`.
.. data:: SND_PURGE
Stop playing all instances of the specified sound.
.. data:: SND_ASYNC
Return immediately, allowing sounds to play asynchronously.
.. data:: SND_NODEFAULT
If the specified sound cannot be found, do not play the system default sound.
.. data:: SND_NOSTOP
Do not interrupt sounds currently playing.
.. data:: SND_NOWAIT
Return immediately if the sound driver is busy.
.. data:: MB_ICONASTERISK
Play the ``SystemDefault`` sound.
.. data:: MB_ICONEXCLAMATION
Play the ``SystemExclamation`` sound.
.. data:: MB_ICONHAND
Play the ``SystemHand`` sound.
.. data:: MB_ICONQUESTION
Play the ``SystemQuestion`` sound.
.. data:: MB_OK
Play the ``SystemDefault`` sound.
|
