'Support for WAVEFORMATEXTENSIBLE

Declare Function waveOutOpen Lib "winmm.dll" Alias "waveOutOpen" (ByRef phwi As IntPtr, ByVal uDeviceID As IntPtr, ByRef pwfx As WAVEFORMATEXTENSIBLE, ByVal dwCallback As IntPtr, ByVal dwCallbackInstance As IntPtr, ByVal fdwOpen As WAVE_FLAGS) As MMSYSERR

    public struct WaveFormatExtensible

<StructLayout(LayoutKind.Sequential, pack:=1)> Public Structure WAVEFORMATEXTENSIBLE

<StructLayout(LayoutKind.Sequential, pack:=1)> Public Structure WAVEFORMATEXTENSIBLE