This function is the write routine for the WAV I/O device.
DWORD WAV_Write( DWORD dwOpenData, LPCVOID pBuf, DWORD len );
The Wave API Manager never calls the WAV_Write function, so this routine may be empty and have an arbitrary return value. WAV_Write is a required stream interface driver function, but the function WAV_IOControl handles all data communication. The audio MDD implementation always returns 0.
This function is defined in the Wav.c file.