C#使用全局热键ASDF空格

public delegate void HotkeyEventHandler(int HotKeyID);
public class Hotkey : System.Windows.Forms.IMessageFilter
{
    Hashtable keyIDs = new Hashtable();
    IntPtr hWnd;
    public event HotkeyEventHandler OnHotkey;
    public enum KeyFlags
    {
        MOD_ALT = 0x1,
        MOD_CONTROL = 0x2,
        MOD_SHIFT = 0x4,
        MOD_WIN = 0x8
    }
    [DllImport("user32.dll")]
    public static extern UInt32 RegisterHotKey(IntPtr hWnd, UInt32 id, UInt32 fsModifiers, UInt32 vk);
    [DllImport("user32.dll")]
    public static extern UInt32 UnregisterHotKey(IntPtr hWnd, UInt32 id);
    [DllImport("kernel32.dll")]
    public static extern UInt32 GlobalAddAtom(String lpString);
    [DllImport("kernel32.dll")]
    public static extern UInt32 GlobalDeleteAtom(UInt32 nAtom);

    public Hotkey(IntPtr hWnd)
    {
         this.hWnd = hWnd;
         Application.AddMessageFilter(this);
    }

    public int RegisterHotkey(Keys Key, KeyFlags keyflags)
    {
        UInt32 hotkeyid = GlobalAddAtom(System.Guid.NewGuid().ToString());
        RegisterHotKey((IntPtr)hWnd, hotkeyid, (UInt32)keyflags, (UInt32)Key);
        keyIDs.Add(hotkeyid, hotkeyid);
        return (int)hotkeyid;
    }

    public void UnregisterHotkeys()
    {
        Application.RemoveMessageFilter(this);
        foreach (UInt32 key in keyIDs.Values)
        {
            UnregisterHotKey(hWnd, key);
            GlobalDeleteAtom(key);
        }
     }

    public bool PreFilterMessage(ref System.Windows.Forms.Message m)
    {
          if (m.Msg == 0x312)
                {
                    if (OnHotkey != null)
                    {
                        foreach (UInt32 key in keyIDs.Values)
                        {
                            if ((UInt32)m.WParam == key)
                            {
                                OnHotkey((int)m.WParam);
                                return true;
                            }
                        }
                    }
                }
           return false;
           }
     }

    public void OnHotkey(int HotkeyID) 
        {
            if (HotkeyID == a) { QJ.mclick(QJ.A键); }
            if (HotkeyID == s) { QJ.mclick(QJ.S键); }
            if (HotkeyID == d) { QJ.mclick(QJ.D键); }
            if (HotkeyID == f) { QJ.mclick(QJ.F键); }
            if (HotkeyID == k) { QJ.mclick(QJ.空格键); }
        }
    }

使用前先注册

private int a,s,d,f,k;
private void FormC_Load(object sender, EventArgs e)
{
    #region 全局热键初始化
	Hotkey hotkey;
	hotkey = new Hotkey(this.Handle);
	a  = hotkey.RegisterHotkey(System.Windows.Forms.Keys.A,0); //定义快键A
	s  = hotkey.RegisterHotkey(System.Windows.Forms.Keys.S, 0); //0不使用特殊键
	d  = hotkey.RegisterHotkey(System.Windows.Forms.Keys.D, 0); 
	f  = hotkey.RegisterHotkey(System.Windows.Forms.Keys.F, 0); 
	k  = hotkey.RegisterHotkey(System.Windows.Forms.Keys.Space, 0); 
	hotkey.OnHotkey += new HotkeyEventHandler(OnHotkey);
	#endregion
}