static extern Int32 mixerGetLineControls(IntPtr hmxobj,

Declare Function mixerGetLineControls Lib "winmm.dll" (hmxobj As IntPtr, _

private static extern Int32 mixerGetLineControls(IntPtr hmxobj, ref MIXERLINECONTROLS pmxlc, uint fdwControls);

public static Int32 mixerGetLineControls(IntPtr hmxobj, ref MIXERLINECONTROLS pmxlc, MIXER_OBJECTF mixerFlags, MIXER_GETLINECONTROLSF controlsFlags)

     return mixerGetLineControls(hmxobj, ref pmxlc, flags);