最新版C#实现快捷键(系统热键)响应 以及事件调用

在MainForm中申明函数

MainForm（）

{

[System.Runtime.InteropServices.DllImport("user32.dll")] //申明API函数
        public static extern bool RegisterHotKey(
         IntPtr hWnd, // handle to window
         int id, // hot key identifier
         uint fsModifiers, // key-modifier options
         Keys vk // virtual-key code
        );
        [System.Runtime.InteropServices.DllImport("user32.dll")] //申明API函数
        public static extern bool UnregisterHotKey(
         IntPtr hWnd, // handle to window
         int id // hot key identifier
        );

private void MainForm_Activated(object sender, EventArgs e) //注册热键
        {
            RegisterHotKey(Handle, 100, 0, Keys.Escape); //定义热键为Escape，这里实现了屏幕系统退出
            RegisterHotKey(Handle, 101,0, Keys.F1); //注册F1热键,根据id值101来判断需要执行哪个函数
            RegisterHotKey(Handle, 102,0, Keys.F2); //注册F2热键,根据id值102来判断需要执行哪个函数

//注册热键的函数中，其中为0的参数表示没有组合键，假如需要设置组合键，可以声明一个枚举类型来表示，可以从网上查资料
        }

////////尤其注意：Form注销热键的事件是Deactivate，不是Leave了。

private void MainForm_Deactivate(object sender, EventArgs e) // 注销热键。
        {
            UnregisterHotKey(Handle, 100);//卸载第1个快捷键
            UnregisterHotKey(Handle, 101); //缷载第2个快捷键
            UnregisterHotKey(Handle, 102); //缷载第2个快捷键
        }

protected override void WndProc(ref Message m) // 重载WndProc函数
        {
            const int WM_HOTKEY = 0x0312;
            //按快捷键
            switch (m.Msg)
            {
                case WM_HOTKEY:
                    switch (m.WParam.ToInt32())
                    {
                        case 100:    //Escape 退出
                            this.FormBorderStyle = FormBorderStyle.FixedSingle;
                            this.WindowState = FormWindowState.Normal;      
                            break;
                        case 101:    //F1 设置
                            foreach (Form temp in Application.OpenForms)
                            {
                                OpendFormName.Add(temp.Name);
                            }
                            using (Seting setForm = new Seting())
                            {
                                if (!OpendFormName.Contains(setForm.Name))
                                {
                                    setForm.ShowDialog();
                                }
                            }
                            OpendFormName.Clear();
                            break;
                        case 102:    //F2 全屏
                            this.FormBorderStyle = FormBorderStyle.None;
                            this.WindowState = FormWindowState.Maximized;
                            this.webBrowser1.Dock = DockStyle.Fill;
                            break;
                    }
                    break;
            }
            base.WndProc(ref m);
        }

}