WinForm注册热键方法

using   System; 
using   System.Collections.Generic; 
using   System.ComponentModel; 
using   System.Data; 
using   System.Drawing; 
using   System.Text; 
using   System.Windows.Forms; 
using   System.DirectoryServices; 
using   System.Runtime.InteropServices; 
namespace   test 
{ 
        public   partial   class   Form1   :   Form 
        { 
                class   HotKey 
                { 
                        //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。 
                        [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 
                                ); 

                        [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 
                                ); 

                        //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） 
                        [Flags()] 
                        public   enum   KeyModifiers 
                        { 
                                None   =   0, 
                                Alt   =   1, 
                                Ctrl   =   2, 
                                Shift   =   4, 
                                WindowsKey   =   8 
                        } 
                } 


                public   Form1() 
                { 
                        InitializeComponent(); 
                        HotKey.RegisterHotKey(this.Handle,   100,   0,   Keys.F1); 
                        
                } 

                protected   override   void   WndProc(ref   Message   m) 
                { 
                        const   int   WM_HOTKEY   =   0x0312; 
                        //按快捷键   
                        switch   (m.Msg) 
                        { 
                                case   WM_HOTKEY: 
                                        switch   (m.WParam.ToInt32()) 
                                        { 
                                                case   100: 
                                                        MessageBox.Show( "Press   F1 "); 
                                                        break; 
                                        } 
                                        break; 
                        } 
                        base.WndProc(ref   m); 
                } 

                

        } 
}