C# Signature:
[DllImport("winmm.dll", CharSet=CharSet.Auto)]
static extern bool PlaySound(
IntPtr pszSound,
IntPtr hmod,
PlaySoundFlags fdwSound);
[DllImport("winmm.dll", CharSet=CharSet.Auto)]
static extern bool PlaySoundString(
string pszSound,
IntPtr hmod,
PlaySoundFlags fdwSound);
[Flags]
public enum PlaySoundFlags
{
SND_SYNC = 0x0000, // play synchronously (default)
SND_ASYNC = 0x0001, // play asynchronously
SND_NODEFAULT = 0x0002, // silence (!default) if sound not found
SND_MEMORY = 0x0004, // pszSound points to a memory file
SND_LOOP = 0x0008, // loop the sound until next sndPlaySound
SND_NOSTOP = 0x0010, // don't stop any currently playing sound
SND_NOWAIT = 0x00002000, // don't wait if the driver is busy
SND_ALIAS = 0x00010000, // name is a registry alias
SND_ALIAS_ID = 0x00110000, // alias is a predefined id
SND_FILENAME = 0x00020000, // name is file name
SND_RESOURCE = 0x00040004 // name is resource name or atom
}
VB Signature:
Public Declare Auto Function PlaySound Lib "winmm.dll" Alias "PlaySound"( _
ByVal pszSound As IntPtr,
ByVal hmod As IntPtr,
ByVal fdwSound As PlaySoundFlags) _
As Boolean
Notes:
[2004-10-15 - Nicholas Paldino - mvp@spam.guard.caspershouse.com]
Cleaned up the declarations, also changed the string parameter to an IntPtr, and removed UIntPtr parameter. Reverted
to IntPtr in the event that the sound is in memory, or in a resource. To play a sound from a filename, use the PlaySoundString
declaration, which will allow you to pass a string for the first parameter.
Tips & Tricks:
Sometimes when using SND_ASYNC, your sound will be clipped at the beginning or the end of the sound. One workaround is to play all sounds in another thread using SND_SYNC.
Sample Code:
public static void Play (string strFileName)
{
PlaySound (strFileName, IntPtr.Zero, SoundFlags.SND_FILENAME | SoundFlags.SND_ASYNC);
}
Alternative Managed API:
Do you know one? Please contribute it!
