c# 注册了Ctrl+空格为热键，捕获后发送Ctrl+Shift

 1 public partial class Form2 : Form
 2     {
 3         [DllImport("user32")]
 4         public static extern bool RegisterHotKey(IntPtr hWnd, int id, uint control, Keys vk);
 5         //解除注册热键的api
 6         [DllImport("user32")]
 7         public static extern bool UnregisterHotKey(IntPtr hWnd, int id);
 8         const int WM_HOTKEY = 0x0312;
 9         public Form2()
10         {
11             InitializeComponent();
12         }
13 
14         private void Form2_Load(object sender, EventArgs e)
15         {
16             //100为代号
17             HotKey.RegisterHotKey(Handle, 100, HotKey.KeyModifiers.Ctrl, Keys.Space);
18         }
19 
20         private void Form1_FormClosed(object sender, FormClosedEventArgs e)
21         {
22             //100为代号
23             HotKey.UnregisterHotKey(this.Handle, 100);
24         }
25 
26         protected override void WndProc(ref Message m)
27         {
28             switch (m.Msg)
29             {
30                 case WM_HOTKEY:
31                 {
32                     switch (m.WParam.ToInt32())
33                     {
34                         case 100:
35                         {
36                             SendKeys.Send("^+");//SHIFT:+   CTRL:^
37                             break;
38                         }
39                     }
40                     break;
41                 }
42             }
43             base.WndProc(ref m);
44         }  
45     }
46 
47     public class HotKey
48     {
49         //如果函数执行成功，返回值不为0。  
50         //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。  
51         [DllImport("user32.dll", SetLastError = true)]
52         public static extern bool RegisterHotKey(
53             IntPtr hWnd,                //要定义热键的窗口的句柄  
54             int id,                     //定义热键ID（不能与其它ID重复）             
55             KeyModifiers fsModifiers,   //标识热键是否在按Alt、Ctrl、Shift、Windows等键时才会生效  
56             Keys vk                     //定义热键的内容  
57             );
58 
59         [DllImport("user32.dll", SetLastError = true)]
60         public static extern bool UnregisterHotKey(
61             IntPtr hWnd,                //要取消热键的窗口的句柄  
62             int id                      //要取消热键的ID  
63             );
64 
65         //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）  
66         [Flags()]
67         public enum KeyModifiers
68         {
69             None = 0,
70             Alt = 1,
71             Ctrl = 2,
72             Shift = 4,
73             WindowsKey = 8
74         }
75     }