为程序设置快捷键

注册系统热键 
using  System;
using  System.Runtime.InteropServices;
using  System.Windows.Forms;

namespace  Utility.Form
{
     public   class  HotKey
    {
         ///   <summary>
         ///  注册系统热键
         ///   </summary>
         ///   <example> 注册后，按如下方法重写WndProc方法，写入快捷键的作用
         ///   <code>
         ///  protected override void WndProc(ref Message m)
         /// {
         ///     switch (m.Msg)
         ///     {
         ///         case 0x0312: //表示按快捷键
         ///             switch (m.WParam.ToInt32())
         ///             {
         ///                 case 100:
         ///                     //do something
         ///                     break;
         ///                 default:
         ///                     break;
         ///              }
         ///          break;
         ///    }
         ///   base.WndProc(ref m);
         /// }
         ///   </code>
         ///   </example>
         ///   <param name="hWnd"> Handle </param>
         ///   <param name="id"> ID，不重复即可 </param>
         ///   <param name="fsModifiers"></param>
         ///   <param name="vk"></param>
         ///   <returns> 如果函数执行成功，返回值不为0。如果函数执行失败，返回值为0。要得到扩展错误信息，调用GetLastError。 </returns>
        [DllImport( " user32.dll " , SetLastError  =   true )]
         public   static   extern   bool  RegisterHotKey(
            IntPtr hWnd,                 // 要定义热键的窗口的句柄   
             int  id,                      // 定义热键ID（不能与其它ID重复）              
            KeyModifiers fsModifiers,    // 标识热键是否在按Alt、Ctrl、Shift、Windows等键时才会生效   
            Keys vk                      // 定义热键的内容   
            );
         ///   <summary>
         ///  取消注册系统热键
         ///   </summary>
         ///   <param name="hWnd"> Handle </param>
         ///   <param name="id"> ID </param>
         ///   <returns> 取消是否成功 </returns>
        [DllImport( " user32.dll " , SetLastError  =   true )]
         public   static   extern   bool  UnregisterHotKey(
            IntPtr hWnd,                 // 要取消热键的窗口的句柄   
             int  id                       // 要取消热键的ID   
            );

         ///   <summary>
         ///  定义了辅助键的名称（将数字转变为字符以便于记忆，也可去除此枚举而直接使用数值）
         ///   </summary>
        [Flags()]
         public   enum  KeyModifiers
        {
            None  =   0 ,
            Alt  =   1 ,
            Ctrl  =   2 ,
            Shift  =   4 ,
            WindowsKey  =   8
        }
    }
}

            Utility.Form.HotKey.RegisterHotKey(Handle,  101 , Utility.Form.HotKey.KeyModifiers.None, Keys.F1);
            Utility.Form.HotKey.RegisterHotKey(Handle,  102 , Utility.Form.HotKey.KeyModifiers.None, Keys.F2);
            Utility.Form.HotKey.RegisterHotKey(Handle,  103 , Utility.Form.HotKey.KeyModifiers.Alt, Keys.A);

protected   override   void  WndProc( ref  Message m)
        {
             base .WndProc( ref  m);
             switch  (m.Msg)
            {
                 case   0x0312 :  // 表示按快捷键
                     switch  (m.WParam.ToInt32())
                    {
                         case   101 :
                             // ...
                             break ;
                         case   102 :
                             // ...
                             break ;
                         case   103 :
                             // ...
                             break ;
                         default :
                             break ;
                    }
                     break ;
            }
        }