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  • C#注册系统全局快捷键

    int keyid = 10;
            Dictionary<int, HotKeyCallBackHanlder> keymap = new Dictionary<int, HotKeyCallBackHanlder>();
            public delegate void HotKeyCallBackHanlder();
            public enum HotkeyModifiers
            {
                Alt = 1,
                Control = 2,
                Shift = 4,
                Win = 8
            }
            [System.Runtime.InteropServices.DllImport("user32.dll")]
            static extern bool RegisterHotKey(IntPtr hWnd, int id, int modifiers, System.Windows.Forms.Keys vk);
            [System.Runtime.InteropServices.DllImport("user32.dll")]
            static extern bool UnregisterHotKey(IntPtr hWnd, int id);
            /// <summary>
            /// 注册快捷键
            /// </summary>
            /// <param name="hWnd">持有快捷键窗口的句柄</param>
            /// <param name="modifiers">组合键</param>
            /// <param name="vk">快捷键的虚拟键码</param>
            /// <param name="callBack">回调函数(按下快捷键时被调用的方法)</param>
            public void Regist(IntPtr hWnd, int modifiers, System.Windows.Forms.Keys vk, HotKeyCallBackHanlder callBack)
            {
                int id = keyid++;
                if (!RegisterHotKey(hWnd, id, modifiers, vk))
                    throw new Exception("注册失败!");
                keymap[id] = callBack;
            }
            /// <summary>
            /// 注销快捷键
            /// </summary>
            /// <param name="hWnd">持有快捷键窗口的句柄</param>
            /// <param name="callBack">回调函数</param>
            public void UnRegist(IntPtr hWnd, HotKeyCallBackHanlder callBack)
            {
                foreach (KeyValuePair<int, HotKeyCallBackHanlder> var in keymap)
                {
                    if (var.Value == callBack)
                        UnregisterHotKey(hWnd, var.Key);
                }
            }
            /// <summary>
            /// 快捷键消息处理
            /// </summary>
            public void ProcessHotKey(System.Windows.Forms.Message m)
            {
                if (m.Msg == 0x312)
                {
                    int id = m.WParam.ToInt32();
                    HotKeyCallBackHanlder callback;
                    if (keymap.TryGetValue(id, out callback))
                        callback();
                }
            }
    
     1   HotKeys hotKsys = new HotKeys();
     2 
     3         private void Form1_Load(object sender, EventArgs e)
     4         {
     5             hotKsys.Regist(this.Handle, (int)HotKeys.HotkeyModifiers.Control + (int)HotKeys.HotkeyModifiers.Alt, Keys.H, CallBack_Hide);//Ctrl+Alt+H
     6             hotKsys.Regist(this.Handle, (int)HotKeys.HotkeyModifiers.Control, Keys.W, CallBack_Show);//Ctrl+W
     7         }
     8 
     9         void CallBack_Hide()
    10         {
    11             this.Hide();
    12         }
    13 
    14         void CallBack_Show()
    15         {
    16             this.Show();
    17         }
    18 
    19         protected override void WndProc(ref Message m)
    20         {
    21             hotKsys.ProcessHotKey(m);
    22             base.WndProc(ref m);
    23         }
    24 
    25         private void Form1_FormClosing(object sender, FormClosingEventArgs e)
    26         {
    27             hotKsys.UnRegist(this.Handle, CallBack_Hide);
    28             hotKsys.UnRegist(this.Handle, CallBack_Show);
    29         }
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  • 原文地址:https://www.cnblogs.com/panpancn/p/3625984.html
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