Logitech LCD SDK imported from unmanaged dynamic-link library to managed .NET in C#

LogiLCDImport.cs

using System;
using System.Runtime.InteropServices;

public static class LogiLCDImport
{
    public static const int MonochromeLCDWidth = 160;
    public static const int MonochromeLCDHeight = 43;
    public static const int ColorLCDWidth = 320;
    public static const int ColorLCDHeight = 240;

    [Flags]
    public enum LCDType
    {
        Monochrome = 0x00000001,
        Color = 0x00000002
    }

    [Flags]
    public enum LCDButton
    {
        Monochrome0 = 0x00000001,
        Monochrome1 = 0x00000002,
        Monochrome2 = 0x00000004,
        Monochrome3 = 0x00000008,
        ColorLeft = 0x00000100,
        ColorRight = 0x00000200,
        ColorOK = 0x00000400,
        ColorCancel = 0x00000800,
        ColorUp = 0x00001000,
        ColorDown = 0x00002000,
        ColorMenu = 0x00004000
    }

    #region Generic LCD functions

    [DllImport("LogitechLcd.dll")]
    public static extern bool LogiLcdInit(string friendlyName, LCDType lcdType);

    [DllImport("LogitechLcd.dll")]
    bool LogiLcdIsConnected(LCDType lcdType);

    [DllImport("LogitechLcd.dll")]
    bool LogiLcdIsButtonPressed(LCDButton button);

    [DllImport("LogitechLcd.dll")]
    void LogiLcdUpdate();

    [DllImport("LogitechLcd.dll")]
    void LogiLcdShutdown();

    #endregion
    #region Monochrome LCD functions

    [DllImport("LogitechLcd.dll")]
    bool LogiLcdMonoSetBackground(byte[] monoBitmap);

    [DllImport("LogitechLcd.dll")]
    bool LogiLcdMonoSetText(int lineNumber, string text);

    #endregion
    #region Color LCD functions

    [DllImport("LogitechLcd.dll")]
    bool LogiLcdColorSetBackground(byte[] colorBitmap);

    [DllImport("LogitechLcd.dll")]
    bool LogiLcdColorSetTitle(string text, int red = 255, int green = 255, int blue = 255);

    [DllImport("LogitechLcd.dll")]
    bool LogiLcdColorSetText(int lineNumber, string text, int red = 255, int green = 255, int blue = 255);

    #endregion
    #region UDK functions, use this only if working with UDK

    [DllImport("LogitechLcd.dll")]
    int LogiLcdColorSetBackgroundUDK(byte[] partialBitmap, int arraySize);

    [DllImport("LogitechLcd.dll")]
    int LogiLcdColorResetBackgroundUDK();

    [DllImport("LogitechLcd.dll")]
    int LogiLcdMonoSetBackgroundUDK(byte[] partialBitmap, int arraySize);

    [DllImport("LogitechLcd.dll")]
    int LogiLcdMonoResetBackgroundUDK();

    #endregion
}