Detect Mouse and keyboard events globally

[alihassan143]

@halildurmus is there is way to detect mouse movement and mouse clicks and any keyboard button click events

[alihassan143]

static bool _isMonitoring = false;
  static int _keyboardHook = 0;
  static int _mouseHook = 0;

  //

  
  
 static void startMonitoring() {
    if (_isMonitoring) return;
    _isMonitoring = true;

    // Set keyboard hook
    _keyboardHook = SetWindowsHookEx(
      WINDOWS_HOOK_ID.WH_KEYBOARD_LL,
      Pointer.fromFunction<HOOKPROC>(_keyboardProc, 0),
      GetModuleHandle(nullptr),
      0,
    );

    if (_keyboardHook == 0) {
      debugPrint("Failed to set keyboard hook: ${GetLastError()}");
      _isMonitoring = false;
      return;
    }

    // Set mouse hook
    _mouseHook = SetWindowsHookEx(
      WINDOWS_HOOK_ID.WH_MOUSE_LL,
      Pointer.fromFunction<HOOKPROC>(_mouseProc, 0),
      GetModuleHandle(nullptr),
      0,
    );

    if (_mouseHook == 0) {
      UnhookWindowsHookEx(_keyboardHook); // Clean up if mouse hook fails
      debugPrint("Failed to set mouse hook: ${GetLastError()}");
      _isMonitoring = false;
      return;
    }

    debugPrint("Monitoring started.");
  }

  static void stopMonitoring() {
    if (!_isMonitoring) return;
    _isMonitoring = false;

    if (_keyboardHook != 0) {
      UnhookWindowsHookEx(_keyboardHook);
      _keyboardHook = 0; // Reset the hook
    }

    if (_mouseHook != 0) {
      UnhookWindowsHookEx(_mouseHook);
      _mouseHook = 0; // Reset the hook
    }

    debugPrint("Monitoring stopped.");
  }

  static int _keyboardProc(int nCode, int wParam, int lParam) {
    debugPrint("Keyboard event: wParam=$wParam, lParam=$lParam");
    if (nCode >= 0) {
      debugPrint("Keyboard event: wParam=$wParam, lParam=$lParam");
      _keyBoardState.value = KeyboardState.active;
    }
    return CallNextHookEx(_keyboardHook, nCode, wParam, lParam);
  }

  static int _mouseProc(int nCode, int wParam, int lParam) {
    if (nCode >= 0) {
      debugPrint("Mouse event: wParam=$wParam, lParam=$lParam");
      _mouseState.value = MouseState.active;
    }
    return CallNextHookEx(_mouseHook, nCode, wParam, lParam);
  }

I am not getting any event what will be the issue ?

[alihassan143]

static bool _isMonitoring = false;
  static int _keyboardHook = 0;
  static int _mouseHook = 0;

  //

  
  
 static void startMonitoring() {
    if (_isMonitoring) return;
    _isMonitoring = true;

    // Set keyboard hook
    _keyboardHook = SetWindowsHookEx(
      WINDOWS_HOOK_ID.WH_KEYBOARD_LL,
      Pointer.fromFunction<HOOKPROC>(_keyboardProc, 0),
      GetModuleHandle(nullptr),
      0,
    );

    if (_keyboardHook == 0) {
      debugPrint("Failed to set keyboard hook: ${GetLastError()}");
      _isMonitoring = false;
      return;
    }

    // Set mouse hook
    _mouseHook = SetWindowsHookEx(
      WINDOWS_HOOK_ID.WH_MOUSE_LL,
      Pointer.fromFunction<HOOKPROC>(_mouseProc, 0),
      GetModuleHandle(nullptr),
      0,
    );

    if (_mouseHook == 0) {
      UnhookWindowsHookEx(_keyboardHook); // Clean up if mouse hook fails
      debugPrint("Failed to set mouse hook: ${GetLastError()}");
      _isMonitoring = false;
      return;
    }

    debugPrint("Monitoring started.");
  }

  static void stopMonitoring() {
    if (!_isMonitoring) return;
    _isMonitoring = false;

    if (_keyboardHook != 0) {
      UnhookWindowsHookEx(_keyboardHook);
      _keyboardHook = 0; // Reset the hook
    }

    if (_mouseHook != 0) {
      UnhookWindowsHookEx(_mouseHook);
      _mouseHook = 0; // Reset the hook
    }

    debugPrint("Monitoring stopped.");
  }

  static int _keyboardProc(int nCode, int wParam, int lParam) {
    debugPrint("Keyboard event: wParam=$wParam, lParam=$lParam");
    if (nCode >= 0) {
      debugPrint("Keyboard event: wParam=$wParam, lParam=$lParam");
      _keyBoardState.value = KeyboardState.active;
    }
    return CallNextHookEx(_keyboardHook, nCode, wParam, lParam);
  }

  static int _mouseProc(int nCode, int wParam, int lParam) {
    if (nCode >= 0) {
      debugPrint("Mouse event: wParam=$wParam, lParam=$lParam");
      _mouseState.value = MouseState.active;
    }
    return CallNextHookEx(_mouseHook, nCode, wParam, lParam);
  }

I am not getting any event what will be the issue ?

@halildurmus can you update this sample where I am doing something wrong?

[halildurmus]

SetWindowsHookEx requires message loop to work, which is why you're not receiving any events.

You need to create a Win32 window and run a message loop in another isolate, similar to the usb_drive.dart example and the example I gave in #912.