原创 C#下采用索引对WinIO的封装类(WinIO.cs)

2008-11-13 19:16 5253 4 4 分类: 软件与OS

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;//MessageBox需要
using System.Runtime.InteropServices;//加动态链接库需要
//菜农HotPower@126.com  2008.11.12 于雁塔村
namespace WindowsFormsApplication2
{
    #region C#下采用索引对WinIO的封装类(WinIO.cs)
    /*
       应用时应该在Form1.cs中加入:
       private WinIO WinIOPort = new WinIO();
            例: WinIOPort[0x378] = 0x55;
                 x = WinIOPort[0x379, 2];
    */
    public class WinIO
    {
        //动态链接库的引用
        [DllImport("winio.dll")]
        public static extern bool InitializeWinIo();
        [DllImport("winio.dll")]
        public static extern void ShutdownWinIo();
        [DllImport("winio.dll")]
        public static extern bool GetPortVal(IntPtr wPortAddr, out uint pdwPortVal, byte


bSize);
        [DllImport("winio.dll")]
        public static extern bool SetPortVal(IntPtr wPortAddr, IntPtr dwPortVal, byte


bSize);
        /*
        //以下是WinIO与并口无关的函数
                    [DllImport("winio.dll")]
                    public static extern byte MapPhysToLin(byte pbPhysAddr, uint dwPhysSize,


IntPtr PhysicalMemoryHandle);
                    [DllImport("winio.dll")]
                    public static extern bool UnmapPhysicalMemory(IntPtr


PhysicalMemoryHandle, byte pbLinAddr);
                    [DllImport("winio.dll")]
                    public static extern bool GetPhysLong(IntPtr pbPhysAddr, byte


pdwPhysVal);
                    [DllImport("winio.dll")]
                    public static extern bool SetPhysLong(IntPtr pbPhysAddr, byte


dwPhysVal);
                    [DllImport("user32.dll")]
                    public static extern int MapVirtualKey(uint Ucode, uint uMapType);
        */
        //属性字段
        private bool enable = false;//WinIO不可用
        private bool error = false;//读写出错字段


        public WinIO()
        {//构造函数(自动运行)
            try
            {
                enable = InitializeWinIo();//加载WinIO
            }
            catch (System.Exception error)
            {//WinIO加载失败异常处理
                MessageBox.Show(error.Message, "系统提示", MessageBoxButtons.OK,


MessageBoxIcon.Error);
            }
        }


        ~WinIO()
        {//析构函数(自动运行)
            if (enable)
            {//成功加载WinIO
                ShutdownWinIo();//卸载WinIO
            }
        }


        public bool Enable
        {//Enable只读属性
            get
            {
                return enable;
            }
        }


        public bool Error
        {//Error只读属性
            get
            {
                return error;
            }
        }


        public byte this[uint index]//byte读写端口
        {//数组索引:
            get
            {//例如 x = WioIOPort[0x378];  等效:x = WioIOPort[0x378, sizeof(byte)];
                uint val;//WinIo要求dword
                error = GetPortVal((IntPtr)index, out val, sizeof(byte));
                return (byte)val;
            }
            set
            {//例如 WioIOPort[0x378] = 0xff; 等效:WioIOPort[0x378, sizeof(byte)] = 0xff;
                error = SetPortVal((IntPtr)index, (IntPtr)value, sizeof(byte));
            }
        }


        public uint this[uint index, byte size]//可用byte,word,dword读写端口
        {//数组索引,size=1/2/4=sizeof(byte/UInt16/UInt32)
            get
            {//例如 x = WioIOPort[0x378, sizeof(UInt16)];
                uint val;//WinIo要求dword
                error = GetPortVal((IntPtr)index, out val, size);
                return val;
            }
            set
            {//例如 WioIOPort[0x378, sizeof(UInt32)] = 0x12345678;
                error = SetPortVal((IntPtr)index, (IntPtr)value, size);
            }
        }
    }
    #endregion
}

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