键盘右上角的灯亮不亮的问题啊

Question

键盘右上角的灯亮不亮的检测。（完整些）

Answer 1

using   System;   
  using   System.Runtime.InteropServices;   
  using   System.Text;   
    
  namespace   ConsoleApplication8{   
      class   Class1{   
          [STAThread]   
          static   void   Main(string[]   args){   
              //   Display   current   status   of   keys.   
              Console.WriteLine(   
                  "**BEFORE**\r\nCAP:   {0}\r\nSCR:   {1}\r\nNUM:   {2}",     
                  Keyboard.GetState(VirtualKeys.VK_CAPITAL)?"ON":"OFF",   
                  Keyboard.GetState(VirtualKeys.VK_SCROLL)?"ON":"OFF",   
                  Keyboard.GetState(VirtualKeys.VK_NUMLOCK)?"ON":"OFF"   
              );   
              //Toggle   all   the   keys:   
              Keyboard.SetState(   
                  VirtualKeys.VK_CAPITAL,     
                  !Keyboard.GetState(VirtualKeys.VK_CAPITAL)   
              );   
              Keyboard.SetState(   
                  VirtualKeys.VK_SCROLL,     
                  !Keyboard.GetState(VirtualKeys.VK_SCROLL)   
              );   
              Keyboard.SetState(   
                  VirtualKeys.VK_NUMLOCK,     
                  !Keyboard.GetState(VirtualKeys.VK_NUMLOCK)   
              );   
              //   Display   new   status   of   keys.   
              Console.WriteLine(   
                  "\r\n**AFTER**\r\nCAP:   {0}\r\nSCR:   {1}\r\nNUM:   {2}",     
                  Keyboard.GetState(VirtualKeys.VK_CAPITAL)?"ON":"OFF",   
                  Keyboard.GetState(VirtualKeys.VK_SCROLL)?"ON":"OFF",   
                  Keyboard.GetState(VirtualKeys.VK_NUMLOCK)?"ON":"OFF"   
              );   
              Console.ReadLine();   
          }   
      }   
      public   enum   VirtualKeys:   byte{   
          VK_NUMLOCK   =   0x90,   
          VK_SCROLL   =   0x91,   
          VK_CAPITAL   =   0x14   
      }   
      class   Keyboard{   
          const   uint   KEYEVENTF_EXTENDEDKEY   =   0x1;   
          const   uint   KEYEVENTF_KEYUP   =   0x2;   
          [DllImport("user32.dll")]   
          static   extern   short   GetKeyState(int   nVirtKey);   
          [DllImport("user32.dll")]   
          static   extern   void   keybd_event(   
              byte   bVk,     
              byte   bScan,     
              uint   dwFlags,     
              uint   dwExtraInfo   
          );   
          public   static   bool   GetState(VirtualKeys   Key){   
              return   (GetKeyState((int)Key)==1);   
          }   
          public   static   void   SetState(VirtualKeys   Key,   bool   State){   
              if(State!=GetState(Key)){   
                  keybd_event(   
                      (byte)Key,     
                      0x45,     
                      KEYEVENTF_EXTENDEDKEY   |   0,     
                      0   
                  );   
                  keybd_event(   
                      (byte)Key,     
                      0x45,     
                      KEYEVENTF_EXTENDEDKEY   |   KEYEVENTF_KEYUP,     
                      0   
                  );   
              }   
          }   
      }   
  }

Answer 2

前两天刚看到的代码，利用 user32.dll 模拟键盘操作！

Answer 3

朋友你的是：C#控制台应用程序吧，谢谢。很不错啊！
有没有c#.net winform的程序啊.

Answer 4

能实现了啊，谢谢！不过谁能帮我解释一下
  [DllImport("user32.dll")]  
   const   uint   KEYEVENTF_EXTENDEDKEY   =   0x1;   
等等。类API的使用方法啊