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