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標題: C#下采用索引對WinIO的封裝類(WinIO.cs) [打印本頁]

作者: hotpower 時間: 2009-4-3 00:10
標題: C#下采用索引對WinIO的封裝類(WinIO.cs)
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Windows.Forms;//MessageBox需要
using System.Runtime.InteropServices;//加動態(tài)鏈接庫需要
//菜農(nóng)HotPower@126.com  2008.11.12 于雁塔村
namespace WindowsFormsApplication2
{
#region C#下采用索引對WinIO的封裝類(WinIO.cs)
/*
   應(yīng)用時應(yīng)該在Form1.cs中加入:
   private WinIO WinIOPort = new WinIO();
         例： WinIOPort[0x378] = 0x55;
               x = WinIOPort[0x379, 2];
*/
public class WinIO
{
      //動態(tài)鏈接庫的引用
      [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與并口無關(guān)的函數(shù)
                  [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);
      */
      //屬性字段
      private bool enable = false;//WinIO不可用
      private bool error = false;//讀寫出錯字段
      public WinIO()
      {//構(gòu)造函數(shù)(自動運行)
         try
         {
            enable = InitializeWinIo();//加載WinIO
         }
         catch (System.Exception error)
         {//WinIO加載失敗異常處理
            MessageBox.Show(error.Message, "系統(tǒng)提示", MessageBoxButtons.OK,
MessageBoxIcon.Error);
         }
      }
      ~WinIO()
      {//析構(gòu)函數(shù)(自動運行)
         if (enable)
         {//成功加載WinIO
            ShutdownWinIo();//卸載WinIO
         }
      }
      public bool Enable
      {//Enable只讀屬性
         get
         {
            return enable;
         }
      }
      public bool Error
      {//Error只讀屬性
         get
         {
            return error;
         }
      }
      public byte this[uint index]//byte讀寫端口
      {//數(shù)組索引:
         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讀寫端口
      {//數(shù)組索引,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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