Hi John,

> How to use this function?? I know it used to set volumn sound, what are the value for this function ?? especially deviceID or handle...

You can get the handle with waveOutOpen().

The second parameter determines the volume as a 32 bit value. The higher 16 bits are the right channel, the lower ones are the left channel. Passing a value of 0xFFFF0000 for example would set the volume on the right speaker to 100% and turn of the left speaker.

Christof