private IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr lParam)
{
bool fEatKeyStroke = false;
var wparamTyped = wParam.ToInt32();
if (Enum.IsDefined(typeof(KeyboardState), wparamTyped))
{
object o = Marshal.PtrToStructure(lParam, typeof(LowLevelKeyboardInputEvent));
LowLevelKeyboardInputEvent p = (LowLevelKeyboardInputEvent)o;
var eventArguments = new GlobalKeyboardHookEventArgs(p, (KeyboardState)wparamTyped);
EventHandler <GlobalKeyboardHookEventArgs> handler = KeyboardPressed;
handler?.Invoke(this, eventArguments);
fEatKeyStroke = eventArguments.Handled;
}
return(fEatKeyStroke ? (IntPtr)1 : CallNextHookEx(IntPtr.Zero, nCode, wParam, lParam));
}
private void Hook_KeyboardPressed(object sender, GlobalKeyboardHookEventArgs e)
{
var currentlyPressedKeys = new List <string>();
var virtualCode = e.KeyboardData.VirtualCode;
// ESC pressed
if (virtualCode == KeyInterop.VirtualKeyFromKey(Key.Escape))
{
if (_appStateHandler.IsColorPickerEditorVisible())
{
_appStateHandler.HideColorPickerEditor();
}
else
{
_appStateHandler.HideColorPicker();
PowerToysTelemetry.Log.WriteEvent(new ColorPickerCancelledEvent());
}
return;
}
var name = Helper.GetKeyName((uint)virtualCode);
// If the last key pressed is a modifier key, then currentlyPressedKeys cannot possibly match with _activationKeys
// because _activationKeys contains exactly 1 non-modifier key. Hence, there's no need to check if `name` is a
// modifier key or to do any additional processing on it.
if (e.KeyboardState == GlobalKeyboardHook.KeyboardState.KeyDown || e.KeyboardState == GlobalKeyboardHook.KeyboardState.SysKeyDown)
{
// Check pressed modifier keys.
AddModifierKeys(currentlyPressedKeys);
currentlyPressedKeys.Add(name);
}
currentlyPressedKeys.Sort();
if (currentlyPressedKeys.Count == 0 && _previouslyPressedKeys.Count != 0)
{
// no keys pressed, we can enable activation shortcut again
_activationShortcutPressed = false;
}
_previouslyPressedKeys = currentlyPressedKeys;
if (ArraysAreSame(currentlyPressedKeys, _activationKeys))
{
// avoid triggering this action multiple times as this will be called nonstop while keys are pressed
if (!_activationShortcutPressed)
{
_activationShortcutPressed = true;
if (_userSettings.ActivationAction.Value == ColorPickerActivationAction.OpenEditor)
{
_appStateHandler.ShowColorPickerEditor();
}
else
{
_appStateHandler.ShowColorPicker();
}
}
}
}