以下文章轉載自http://www.dotblogs.com.tw/jimmyyu/archive/2009/06/03/8665.aspx

01     class HotKey
02     {
03         [DllImport("user32.dll", SetLastError = true)]
04         public static extern bool RegisterHotKey(
05             IntPtr hWnd,
06
07             int id,
08             KeyModifiers fsModifiers,
09
10             Keys vk
11
12             );
13
14         [DllImport("user32.dll", SetLastError = true)]
15         public static extern bool UnregisterHotKey(
16             IntPtr hWnd,
17
18             int id
19
20             );
21
22         [Flags()]
23         public enum KeyModifiers
24         {
25             None = 0,
26             Alt = 1,
27             Ctrl = 2,
28             Shift = 4,
29             WindowsKey = 8
30         }
31     }

然後在Form的Activated事件中註冊所要使用的HotKey，如下方範 例，我總共註冊了幾個常用的Hot-Key組合：

01         //設定hot key
02         private void Form1_Activated(object sender, EventArgs e)
03         {
04             //HotKey.RegisterHotKey(Handle, 100, HotKey.KeyModifiers.Shift, Keys.S);
05             //Ctrl-S存檔
06             HotKey.RegisterHotKey(Handle, 101, HotKey.KeyModifiers.Ctrl, Keys.S);
07             //Esc放棄這筆修改
08             HotKey.RegisterHotKey(Handle, 102, HotKey.KeyModifiers.None, Keys.Escape);
09             //Ctrl-E編輯這筆
10             HotKey.RegisterHotKey(Handle, 103, HotKey.KeyModifiers.Ctrl, Keys.E);
11             //Ctrl-A新增
12             HotKey.RegisterHotKey(Handle, 104, HotKey.KeyModifiers.Ctrl, Keys.A);
13             //Ctrl-D刪除這筆
14             HotKey.RegisterHotKey(Handle, 105, HotKey.KeyModifiers.Ctrl, Keys.D);
15         }

然後透過複寫WinProc來完成Hot-Key所要執行的工作：

01         protected override void WndProc(ref Message m)
02         {
03             const int WM_HOTKEY = 0x0312;
04             switch (m.Msg)
05             {
06                 case WM_HOTKEY:
07                     switch (m.WParam.ToInt32())
08                     {
09                         case 101:    //Ctrl+S
10                             //save
11                             break;
12                         case 102:    //Esc
13                             //escape
14                             break;
15                         case 103:    //Ctrl+E
16                             //edit                          
17                             break;
18                         case 104:    //Ctrl+A
19                             //add
20                             break;
21                         case 105:    //Ctrl+D
22                             //delete
23                             break;
24                     }
25                     break;
26             }
27
28             base.WndProc(ref m);
29         }

 

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