static extern Int32 mixerSetControlDetails(IntPtr hmxobj,

Declare Function mixerSetControlDetails Lib "winmm.dll" (ByVal hmxobj As IntPtr, ByVal pmxcd As MIXERCONTROLDETAILS, ByVal fdwDetails As Integer) As Integer

private static extern Int32 mixerSetControlDetails(IntPtr hmxobj, ref MIXERCONTROLDETAILS pmxcd, uint fdwDetails);

public static Int32 mixerSetControlDetails(IntPtr hmxobj, ref MIXERCONTROLDETAILS pmxcd, MIXER_OBJECTF fdwDetails, MIXER_SETCONTROLDETAILSF setControlDetails)

     return mixerSetControlDetails(hmxobj, ref pmxcd, flags);