Use Global Hook for Hotkey Control

Flow.Launcher.Infrastructure/Hotkey/GlobalHotkey.cs

@@ -27,12 +27,15 @@ namespace Flow.Launcher.Infrastructure.Hotkey
         static GlobalHotkey()
         {
             // Set the hook
-            hookId = InterceptKeys.SetHook(& LowLevelKeyboardProc);
+            hookId = InterceptKeys.SetHook(&LowLevelKeyboardProc);
         }
 
         public static SpecialKeyState CheckModifiers()
         {
             SpecialKeyState state = new SpecialKeyState();
+
+           
+
             if ((InterceptKeys.GetKeyState(VK_SHIFT) & 0x8000) != 0)
             {
                 //SHIFT is pressed

Flow.Launcher.Infrastructure/Hotkey/HotkeyModel.cs

@@ -31,15 +31,15 @@ namespace Flow.Launcher.Infrastructure.Hotkey
                 }
                 if (Shift)
                 {
-                    modifierKeys = modifierKeys | ModifierKeys.Shift;
+                    modifierKeys |= ModifierKeys.Shift;
                 }
                 if (Win)
                 {
-                    modifierKeys = modifierKeys | ModifierKeys.Windows;
+                    modifierKeys |= ModifierKeys.Windows;
                 }
                 if (Ctrl)
                 {
-                    modifierKeys = modifierKeys | ModifierKeys.Control;
+                    modifierKeys |= ModifierKeys.Control;
                 }
                 return modifierKeys;
             }

Flow.Launcher.Infrastructure/Hotkey/InterceptKeys.cs

@@ -34,5 +34,8 @@ namespace Flow.Launcher.Infrastructure.Hotkey
 
         [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.Winapi)]
         public static extern short GetKeyState(int keyCode);
+
+        [DllImport("user32.dll", CharSet = CharSet.Auto, ExactSpelling = true, CallingConvention = CallingConvention.Winapi)]
+        public static extern short GetAsyncKeyState(int keyCode);
     }
 }

Flow.Launcher/HotkeyControl.xaml

@@ -49,7 +49,6 @@
             Margin="0,0,18,0"
             VerticalContentAlignment="Center"
             input:InputMethod.IsInputMethodEnabled="False"
-            PreviewKeyDown="TbHotkey_OnPreviewKeyDown"
             TabIndex="100"
             LostFocus="tbHotkey_LostFocus"/>
     </Grid>

Flow.Launcher/HotkeyControl.xaml.cs

@@ -9,6 +9,8 @@ using Flow.Launcher.Helper;
 using Flow.Launcher.Infrastructure.Hotkey;
 using Flow.Launcher.Plugin;
 using System.Threading;
+using Flow.Launcher.Core.Plugin;
+using Flow.Launcher.Infrastructure.Logger;
 
 namespace Flow.Launcher
 {
@@ -25,41 +27,93 @@ namespace Flow.Launcher
 
         protected virtual void OnHotkeyChanged() => HotkeyChanged?.Invoke(this, EventArgs.Empty);
 
+        private Func<int, int, SpecialKeyState, bool> callback { get; set; }
+
         public HotkeyControl()
         {
             InitializeComponent();
             tbMsgTextOriginal = tbMsg.Text;
             tbMsgForegroundColorOriginal = tbMsg.Foreground;
+
+            callback = TbHotkey_OnPreviewKeyDown;
+
+            GotFocus += (_, _) =>
+            {
+                PluginManager.API.RegisterGlobalKeyboardCallback(callback);
+            };
+            LostFocus += (_, _) =>
+            {
+                PluginManager.API.RemoveGlobalKeyboardCallback(callback);
+            };
         }
 
         private CancellationTokenSource hotkeyUpdateSource;
 
-        private void TbHotkey_OnPreviewKeyDown(object sender, KeyEventArgs e)
+        private SpecialKeyState state = new SpecialKeyState();
+
+        private bool TbHotkey_OnPreviewKeyDown(int keyevent, int vkcode, SpecialKeyState dummy)
         {
+            var key = KeyInterop.KeyFromVirtualKey(vkcode);
+
+            if ((KeyEvent)keyevent is not (KeyEvent.WM_KEYDOWN or KeyEvent.WM_SYSKEYDOWN))
+            {
+                switch (key)
+                {
+                    case Key.LeftAlt or Key.RightAlt:
+                        state.AltPressed = false;
+                        break;
+                    case Key.LeftCtrl or Key.RightCtrl:
+                        state.CtrlPressed = false;
+                        break;
+                    case Key.LeftShift or Key.RightShift:
+                        state.ShiftPressed = false;
+                        break;
+                    case Key.LWin or Key.LWin:
+                        state.WinPressed = false;
+                        break;
+                    default:
+                        break;
+                }
+                return true;
+            }
+
+            switch (key)
+            {
+                case Key.LeftAlt or Key.RightAlt:
+                    state.AltPressed = true;
+                    break;
+                case Key.LeftCtrl or Key.RightCtrl:
+                    state.CtrlPressed = true;
+                    break;
+                case Key.LeftShift or Key.RightShift:
+                    state.ShiftPressed = true;
+                    break;
+                case Key.LWin or Key.LWin:
+                    state.WinPressed = true;
+                    break;
+            }
+
+
             hotkeyUpdateSource?.Cancel();
             hotkeyUpdateSource?.Dispose();
             hotkeyUpdateSource = new();
             var token = hotkeyUpdateSource.Token;
-            e.Handled = true;
 
-            //when alt is pressed, the real key should be e.SystemKey
-            Key key = e.Key == Key.System ? e.SystemKey : e.Key;
-
-            SpecialKeyState specialKeyState = GlobalHotkey.CheckModifiers();
 
             var hotkeyModel = new HotkeyModel(
-                specialKeyState.AltPressed,
+                state.AltPressed,
-                specialKeyState.ShiftPressed,
+                state.ShiftPressed,
-                specialKeyState.WinPressed,
+                state.WinPressed,
-                specialKeyState.CtrlPressed,
+                state.CtrlPressed,
                 key);
 
             var hotkeyString = hotkeyModel.ToString();
 
             if (hotkeyString == tbHotkey.Text)
             {
-                return;
+                return false;
             }
+            Log.Debug("test hotkey" + hotkeyString);
 
             _ = Dispatcher.InvokeAsync(async () =>
             {
@@ -67,6 +121,8 @@ namespace Flow.Launcher
                 if (!token.IsCancellationRequested)
                     await SetHotkey(hotkeyModel);
             });
+
+            return false;
         }
 
         public async Task SetHotkey(HotkeyModel keyModel, bool triggerValidate = true)

Flow.Launcher/SettingWindow.xaml.cs

@@ -137,7 +137,7 @@ namespace Flow.Launcher
 
         private void OnHotkeyControlFocused(object sender, RoutedEventArgs e)
         {
-            HotKeyMapper.RemoveHotkey(settings.Hotkey);
+            //HotKeyMapper.RemoveHotkey(settings.Hotkey);
         }
 
         private void OnHotkeyControlFocusLost(object sender, RoutedEventArgs e)