#22 锁屏时支持隐藏鼠标光标

src/ComputerLock/App.xaml.cs

@@ -40,6 +40,7 @@ private void Init()
         });
         services.AddSingleton(LogManager.GetLogger());
         services.AddSingleton<KeyboardHook>();
+        services.AddSingleton<MouseHook>();
         services.AddSingleton<UpdateHelper>();
         services.AddSingleton<AutostartHook>();
         services.AddSingleton<TaskManagerHook>();

src/ComputerLock/Configuration/AppSettings.cs

@@ -88,4 +88,9 @@ public class AppSettings
     /// 密码框激活方式
     /// </summary>
     public PasswordBoxActiveMethodEnum PasswordBoxActiveMethod { get; set; } = PasswordBoxActiveMethodEnum.KeyboardDown | PasswordBoxActiveMethodEnum.MouseDown;
+
+    /// <summary>
+    /// 自动隐藏鼠标光标
+    /// </summary>
+    public bool IsHideMouseCursor { get; set; } = false;
 }

src/ComputerLock/Hooks/MouseHook.cs

@@ -0,0 +1,50 @@
+using System.Runtime.InteropServices;
+
+namespace ComputerLock.Hooks;
+internal class MouseHook
+{
+    [DllImport("user32.dll")]
+    private static extern int ShowCursor(bool bShow);
+
+    private int _cursorCount = 0;
+
+    /// <summary>
+    /// 隐藏鼠标光标。
+    /// </summary>
+    public void HideCursor()
+    {
+        if (_cursorCount >= 0) // 如果光标可见
+        {
+            _cursorCount = ShowCursor(false); // 隐藏光标
+        }
+    }
+
+    /// <summary>
+    /// 显示鼠标光标。
+    /// </summary>
+    public void ShowCursor()
+    {
+        if (_cursorCount < 0) // 如果光标不可见
+        {
+            _cursorCount = ShowCursor(true); // 显示光标
+        }
+    }
+
+    /// <summary>
+    /// 重置光标显示状态。
+    /// </summary>
+    public void ResetCursorState()
+    {
+        while (_cursorCount < 0) // 如果光标隐藏
+        {
+            ShowCursor(true); // 显示光标
+            _cursorCount++;
+        }
+
+        while (_cursorCount > 0) // 如果光标多次显示
+        {
+            ShowCursor(false); // 隐藏光标
+            _cursorCount--;
+        }
+    }
+}

src/ComputerLock/Pages/Index.razor

@@ -26,6 +26,11 @@ else
                    Color="Color.Primary" />
     </MudTooltip>
 
+    <MudSwitch @bind-Value="@(AppSettings.IsHideMouseCursor)"
+               @bind-Value:after="SaveSettings"
+               Label="@(Lang["HideMouseCursor"])"
+               Color="Color.Primary" />
+
     <div class="d-flex align-center">
         <MudSwitch @bind-Value="@(AppSettings.EnablePasswordBox)"
                    @bind-Value:after="SaveSettings"

src/ComputerLock/Resources/Lang.en.resx

@@ -342,4 +342,7 @@
   <data name="SetPasswordFinished" xml:space="preserve">
     <value>Next</value>
   </data>
+  <data name="HideMouseCursor" xml:space="preserve">
+    <value>Hide the mouse cursor</value>
+  </data>
 </root>

src/ComputerLock/Resources/Lang.resx

@@ -322,4 +322,7 @@
   <data name="SetPasswordFinished" xml:space="preserve">
     <value></value>
   </data>
+  <data name="HideMouseCursor" xml:space="preserve">
+    <value></value>
+  </data>
 </root>

src/ComputerLock/Resources/Lang.zh.resx

@@ -339,4 +339,7 @@
   <data name="SetPasswordFinished" xml:space="preserve">
     <value>完成</value>
   </data>
+  <data name="HideMouseCursor" xml:space="preserve">
+    <value>锁定时隐藏鼠标光标</value>
+  </data>
 </root>

src/ComputerLock/Services/LockService.cs

@@ -14,16 +14,18 @@ internal class LockService
     private readonly AppSettings _appSettings;
     private readonly ILogger _logger;
     private readonly TaskManagerHook _taskManagerHook;
+    private readonly MouseHook _mouseHook;
     public event EventHandler? OnLock;
     public event EventHandler? OnUnlock;
-    public LockService(IServiceProvider serviceProvider, SystemKeyHook systemKeyHook, IStringLocalizer<Lang> lang, AppSettings appSettings, ILogger logger, TaskManagerHook taskManagerHook)
+    public LockService(IServiceProvider serviceProvider, SystemKeyHook systemKeyHook, IStringLocalizer<Lang> lang, AppSettings appSettings, ILogger logger, TaskManagerHook taskManagerHook, MouseHook mouseHook)
     {
         _serviceProvider = serviceProvider;
         _systemKeyHook = systemKeyHook;
         _lang = lang;
         _appSettings = appSettings;
         _logger = logger;
         _taskManagerHook = taskManagerHook;
+        _mouseHook = mouseHook;
 
         // 防止锁屏时系统崩溃、重启等问题导致任务栏被禁用
         // 启动时默认启用一次
@@ -92,6 +94,11 @@ public void Lock()
             _blankScreens.Add(blankScreen);
         }
 
+        if (_appSettings.IsHideMouseCursor)
+        {
+            _logger.Write("锁定服务 -> 隐藏鼠标光标");
+            _mouseHook.HideCursor();
+        }
         OnLock?.Invoke(this, EventArgs.Empty);
     }
 
@@ -114,6 +121,13 @@ private void FmLockScreen_OnUnlock(object? sender, EventArgs e)
             _logger.Write("锁定服务 -> 解锁动画");
             ShowPopup(_lang["UnLocked"]);
         }
+
+        if (_appSettings.IsHideMouseCursor)
+        {
+            _logger.Write("锁定服务 -> 恢复鼠标光标");
+            _mouseHook.ResetCursorState();
+        }
+
         _logger.Write("锁定服务 -> 通知解锁");
         OnUnlock?.Invoke(this, EventArgs.Empty);
     }

src/ComputerLock/WindowMain.xaml

@@ -8,7 +8,7 @@
         xmlns:ui="http://schemas.modernwpf.com/2019"
         mc:Ignorable="d"
         Title="透明锁屏"
-        Height="490"
+        Height="530"
         Width="530"
         ResizeMode="NoResize"
         WindowState="Normal"