PlaySound

The PlaySound function plays a sound specified by the given filename,
resource, or system event. (A system event may be associated with a sound in
the registry or in the WIN.INI file.)
BOOL PlaySound(
LPCSTR pszSound,
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HMODULE hmod,
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DWORD fdwSound
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);
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Parameters
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pszSound
-
A string that specifies the sound to play. If this parameter is NULL, any
currently playing waveform sound is stopped. To stop a non-waveform sound,
specify SND_PURGE in the fdwSound parameter.
Three flags in fdwSound (SND_ALIAS, SND_FILENAME, and SND_RESOURCE)
determine whether the name is interpreted as an alias for a system event, a
filename, or a resource identifier. If none of these flags are specified, PlaySound
searches the registry or the WIN.INI file for an association with the
specified sound name. If an association is found, the sound event is played.
If no association is found in the registry, the name is interpreted as a
filename.
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hmod
-
Handle of the executable file that contains the resource to be loaded. This
parameter must be NULL unless SND_RESOURCE is specified in fdwSound.
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fdwSound
-
Flags for playing the sound. The following values are defined:
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SND_APPLICATION
-
The sound is played using an application-specific association.
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SND_ALIAS
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The pszSound parameter is a system-event alias in the registry or the
WIN.INI file. Do not use with either SND_FILENAME or SND_RESOURCE.
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SND_ALIAS_ID
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The pszSound parameter is a predefined sound identifier.
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SND_ASYNC
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The sound is played asynchronously and PlaySound returns immediately
after beginning the sound. To terminate an asynchronously played waveform
sound, call PlaySound with pszSound set to NULL.
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SND_FILENAME
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The pszSound parameter is a filename.
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SND_LOOP
-
The sound plays repeatedly until PlaySound is called again with the pszSound
parameter set to NULL. You must also specify the SND_ASYNC flag to indicate an
asynchronous sound event.
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SND_MEMORY
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A sound event’s file is loaded in RAM. The parameter specified by pszSound
must point to an image of a sound in memory.
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SND_NODEFAULT
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No default sound event is used. If the sound cannot be found, PlaySound
returns silently without playing the default sound.
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SND_NOSTOP
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The specified sound event will yield to another sound event that is already
playing. If a sound cannot be played because the resource needed to generate
that sound is busy playing another sound, the function immediately returns
FALSE without playing the requested sound.
If this flag is not specified, PlaySound attempts to stop the currently
playing sound so that the device can be used to play the new sound.
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SND_NOWAIT
-
If the driver is busy, return immediately without playing the sound.
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SND_PURGE
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Sounds are to be stopped for the calling task. If pszSound is not NULL,
all instances of the specified sound are stopped. If pszSound is NULL,
all sounds that are playing on behalf of the calling task are stopped.
You must also specify the instance handle to stop SND_RESOURCE events.
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SND_RESOURCE
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The pszSound parameter is a resource identifier; hmod must
identify the instance that contains the resource.
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SND_SYNC
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Synchronous playback of a sound event. PlaySound returns after the
sound event completes.
Return Values
Returns TRUE if successful or FALSE otherwise.
Remarks
The sound specified by pszSound must fit into available physical memory
and be playable by an installed waveform-audio device driver. PlaySound
searches the following directories for sound files: the current directory; the
Windows directory; the Windows system directory; directories listed in the
PATH environment variable; and the list of directories mapped in a network.
For more information about the directory search order, see the documentation
for the OpenFile function.
If it cannot find the specified sound, PlaySound uses the default
system event sound entry instead. If the function can find neither the system
default entry nor the default sound, it makes no sound and returns FALSE.
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