fix: 修复长时间运行后随机闪退的后台线程未处理异常 - #638
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运行 20 分钟至数小时后出现闪退，通常不是启动即崩，而是后台线程 （SystemEvents / System.Threading.Timer / System.Timers.Timer）抛出 未处理异常导致进程直接退出。本次针对以下路径做防御性修复： - SystemEvents.UserPreferenceChanged / DisplaySettingsChanged 在系统 事件专用线程触发，原实现直接访问 WPF UI 对象，跨线程访问会抛 InvalidOperationException 并终止进程；现封送到主线程 Dispatcher， 并在 Window_Closed 取消订阅 UserPreferenceChanged。 - HandleFloatingBarRecovery 的 DelayAction 回调在 Timer 线程直接 执行 ViewboxFloatingBarMarginAnimation，现改为仅负责 Dispatcher.BeginInvoke 封送。 - 看门狗 watchdogTimer 回调整体增加 try/catch，避免看门狗自身异常 成为闪退源。 - WindowOverviewModel.WindowsUpdated、SystemEventMonitor 的 ForegroundWindowChanged/ProcessChanged、RulesetService 的 StatusUpdated 等事件订阅者异常加兜底，避免在 Timer 线程上冒泡。 - DelayAction / TimerTrigger / 时间与日期显示定时器回调增加异常保护。 由于无可测试环境，尚未测试。
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该问题不清楚，此pr暂不受理（在我学校的设备上从未出现此问题） |
CJKmkp
marked this pull request as draft
August 22, 2026 08:37
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问题
项目在使用 20 分钟至数小时后出现闪退。此类“运行一段时间后才闪退”通常不是启动即崩，而是后台线程抛出未处理异常导致进程直接退出。
修复内容
针对以下后台线程未处理异常 / 跨线程访问 UI 的路径做防御性修复：
SystemEvents.UserPreferenceChanged/DisplaySettingsChanged在系统事件专用线程触发，原实现直接访问 WPF UI 对象，跨线程访问会抛InvalidOperationException并终止进程；现封送到主线程Dispatcher，并在Window_Closed取消订阅UserPreferenceChanged。HandleFloatingBarRecovery的DelayAction回调在 Timer 线程直接执行ViewboxFloatingBarMarginAnimation，现改为只负责Dispatcher.BeginInvoke封送。watchdogTimer回调整体增加try/catch，避免看门狗自身异常成为闪退源。WindowOverviewModel.WindowsUpdated、SystemEventMonitor的ForegroundWindowChanged/ProcessChanged、RulesetService的StatusUpdated等事件订阅者异常加兜底，避免在 Timer 线程上冒泡。DelayAction/TimerTrigger/ 时间与日期显示定时器回调增加异常保护。测试情况
由于无可测试环境，尚未测试。