如何在c＃中禁用Windows鍵？

Question

如何禁用或鎖定Windows按鈕？

Answer 1

使用Windows鈎子比修改注冊表要簡潔得多。 此外，有時人們已經設置了自己的個性化掃描碼地圖，並且覆蓋它們並不是一件好事。

要使用Windows鍵掛鈎函數，您需要DllImport一對winapi函數：

[DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr GetModuleHandle(string lpModuleName);

[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr SetWindowsHookEx(int idHook, HookHandlerDelegate lpfn, IntPtr hMod, uint dwThreadId);

[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
[return: MarshalAs(UnmanagedType.Bool)]
public static extern bool UnhookWindowsHookEx(IntPtr hhk);

[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
public static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode, IntPtr wParam, ref KBDLLHOOKSTRUCT lParam);

[DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.Winapi)]
public static extern short GetKeyState(int keyCode); 

可以在CodeProject上找到相當完整的解釋和演練。 這是從該示例執行所有操作的自包含類文件的直接鏈接 （如果您使用WPF將其編譯為干凈，則需要您手動引用System.Windows.Forms dll或僅更改'System.Windows。 Forms.Keys對System.Windows.Input.Key的引用應該有效。

記得調用UnhookWindowsHookEx（）（該類在Dispose（）中執行此操作）以取消捕獲您的捕獲，否則人們會討厭您。

Answer 2

你需要一個鍵盤鈎。 從這樣的地方開始：

 hKeyboardHook = SetWindowsHookEx(WH_KEYBOARD, KeyboardProc, hInstance, 0);

並繼續這樣：

  LRESULT KeyboardProc(...)
  {
     if (Key == VK_SOMEKEY)
    return 1;             // Trap key


    return CallNextHookEx(...); // Let the OS handle it

  }

更多細節： http ： //www.codeproject.com/KB/winsdk/AntonioWinLock.aspx

Answer 3

    /// <summary>
    /// Security routines related to the Windows Key on a standard personal computer Keyboard
    /// </summary>
    public static class WindowsKey {
        /// <summary>
        /// Disables the Windows Key
        /// </summary>
        /// <remarks>May require the current user to logoff or restart the system</remarks>
        public static void Disable() {
            RegistryKey key = null;
            try {
                key = Registry.LocalMachine.OpenSubKey("System\\CurrentControlSet\\Control\\Keyboard Layout", true);
                byte[] binary = new byte[] { 
                    0x00, 
                    0x00, 
                    0x00, 
                    0x00, 
                    0x00, 
                    0x00, 
                    0x00, 
                    0x00, 
                    0x03, 
                    0x00, 
                    0x00, 
                    0x00, 
                    0x00, 
                    0x00, 
                    0x5B, 
                    0xE0, 
                    0x00, 
                    0x00, 
                    0x5C, 
                    0xE0, 
                    0x00, 
                    0x00, 
                    0x00, 
                    0x00 
                };
                key.SetValue("Scancode Map", binary, RegistryValueKind.Binary);
            }
            catch (System.Exception ex) {
                Debug.Assert(false, ex.ToString());
            }
            finally {
                key.Close();
            }
        }

        /// <summary>
        /// Enables the Windows Key
        /// </summary>
        /// <remarks>May require the current user to logoff or restart the system</remarks>
        public static void Enable() {
            RegistryKey key = null;
            try {
                key = Registry.LocalMachine.OpenSubKey("System\\CurrentControlSet\\Control\\Keyboard Layout", true);
                key.DeleteValue("Scancode Map", true);
            }
            catch (System.Exception ex) {
                Debug.Assert(false, ex.ToString());
            }
            finally {
                key.Close();
            }
        }
    }

Answer 4

假設您希望永久禁用Windows密鑰，而不僅僅是在代碼處於焦點時，那么您可以通過編輯注冊表來執行此操作，如下所示：

要禁用 ：將名為“ Scancode Map ”的新REG_BINARY值添加到“ HKEY_LOCAL_ MACHINE \\ System \\ CurrentControlSet \\ Control \\ Keyboard Layout ”，數據值為“ 00000000000000000300000000005BE000005CE000000000 ”

要啟用 ：完全從注冊表中刪除“ 掃描碼映射 ”值。