Newsgroup: it.comp.lang.visual-basic
Titolo: PlaySound

Ciao, chi mi da qualche dritta su PLAYSOUND ?
Grazie in anticipo

Ciao, chi mi da qualche dritta su PLAYSOUND ?
L'MSDN. Mi sembrava chiaro l'help in linea? Cosa non hai capito?
Saluti.
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Non ho capito nulla, perchè non ho MSDN
Grazie

Non ho capito nulla, perchè non ho MSDN
Scusa, come fai a non avere l'help in linea? Almeno una copia Library
te la danno persino con l'edizione per studenti di VB e VC...
Comunque,
*****
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,  
  HMODULE hmod,     
  DWORD fdwSound    
);
Parameters
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. 
hmod 
Handle to the executable file that contains the resource to be loaded.
This parameter must be NULL unless SND_RESOURCE is specified in
fdwSound. 
fdwSound 
Flags for playing the sound. The following values are defined:
Value Meaning 
SND_APPLICATION The sound is played using an application-specific
association. 
SND_ALIAS 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. 
SND_ALIAS_ID The pszSound parameter is a predefined sound identifier. 
SND_ASYNC 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. 
SND_FILENAME The pszSound parameter is a filename. 
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. 
SND_MEMORY A sound event's file is loaded in RAM. The parameter
specified by pszSound must point to an image of a sound in memory. 
SND_NODEFAULT No default sound event is used. If the sound cannot be
found, PlaySound returns silently without playing the default sound. 
SND_NOSTOP 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.
 
SND_NOWAIT If the driver is busy, return immediately without playing
the sound. 
SND_PURGE 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.
 
SND_RESOURCE The pszSound parameter is a resource identifier; hmod
must identify the instance that contains the resource. 
SND_SYNC 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.
Requirements 
  Windows NT/2000: Requires Windows NT 3.1 or later.
  Windows 95/98: Requires Windows 95 or later.
  Header: Declared in Mmsystem.h.
  Library: Use Winmm.lib.
  Unicode: Implemented as Unicode and ANSI versions on Windows
NT/2000.
*****
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