cadencii.win32.__so_midiOutOpen C# (CSharp) Method

        private static extern uint __so_midiOutOpen( [MarshalAs( UnmanagedType.SysUInt )] ref IntPtr lphMidiOut,
                                                [MarshalAs( UnmanagedType.U4 )] uint uDeviceID,
                                                [MarshalAs( UnmanagedType.FunctionPtr )] Delegate dwCallback,
                                                [MarshalAs( UnmanagedType.U4 )] uint dwInstance,
                                                [MarshalAs( UnmanagedType.U4 )] uint dwFlags );