improve:ROT模块

Ink Canvas/Helpers/PPTManager.cs

@@ -460,6 +460,12 @@ namespace Ink_Canvas.Helpers
                     {
                         Thread.Sleep(2000);
 
+                        if (_disposed)
+                        {
+                            _isModuleUnloading = false;
+                            return;
+                        }
+                        
                         GC.Collect();
                         GC.WaitForPendingFinalizers();
                         GC.Collect();
@@ -467,7 +473,18 @@ namespace Ink_Canvas.Helpers
                         Thread.Sleep(1000);
                         
                         _isModuleUnloading = false;
+
+                        try
+                        {
+                            if (!_disposed)
+                            {
                                 _unifiedPptTimer?.Start();
+                            }
+                        }
+                        catch (ObjectDisposedException)
+                        {
+                            LogHelper.WriteLogToFile("PPT联动模块重载时计时器已释放，跳过重启", LogHelper.LogType.Trace);
+                        }
                         
                         LogHelper.WriteLogToFile("PPT联动模块已重新加载", LogHelper.LogType.Trace);
                     }

Ink Canvas/MainWindow_cs/MW_PPT.cs

@@ -723,24 +723,14 @@ namespace Ink_Canvas
                     {
                         LogHelper.WriteLogToFile("PPT连接已断开", LogHelper.LogType.Event);
                         _singlePPTInkManager?.ClearAllStrokes();
-                        _exitPPTModeAfterDisconnectTimer?.Stop();
-                        _exitPPTModeAfterDisconnectTimer = new DispatcherTimer
-                        {
-                            Interval = TimeSpan.FromMilliseconds(ExitPPTModeAfterDisconnectDelayMs)
-                        };
-                        _exitPPTModeAfterDisconnectTimer.Tick += (s, e) =>
-                        {
                         _exitPPTModeAfterDisconnectTimer?.Stop();
                         _exitPPTModeAfterDisconnectTimer = null;
-                            if (_pptManager?.IsConnected != true)
-                            {
                         _pptUIManager?.UpdateSlideShowStatus(false);
                         _pptUIManager?.UpdateSidebarExitButtons(false);
                         ResetPPTStateVariables();
                         _ = HandleManualSlideShowEnd();
-                            }
+                        if (Settings.PowerPointSettings.UseRotPptLink)
-                        };
+                            _pptManager?.ReloadConnection();
-                        _exitPPTModeAfterDisconnectTimer.Start();
                     }
                 });
             }
@@ -921,14 +911,36 @@ namespace Ink_Canvas
                 string presentationName = null;
                 Presentation activePresentation = null;
 
-                if (wn?.View != null && wn.Presentation != null)
+                if (wn != null)
+                {
+                    try
+                    {
+                        if (wn.View != null && wn.Presentation != null)
                         {
                             activePresentation = wn.Presentation;
                             currentSlide = wn.View.CurrentShowPosition;
                             totalSlides = activePresentation.Slides.Count;
                             presentationName = activePresentation.Name;
                         }
-                else
+                    }
+                    catch (COMException comEx)
+                    {
+                        var hr = (uint)comEx.HResult;
+                        activePresentation = null;
+                        currentSlide = 0;
+                        totalSlides = 0;
+                        presentationName = null;
+                    }
+                    catch (Exception ex)
+                    {
+                        activePresentation = null;
+                        currentSlide = 0;
+                        totalSlides = 0;
+                        presentationName = null;
+                    }
+                }
+
+                if (activePresentation == null)
                 {
                     activePresentation = _pptManager?.GetCurrentActivePresentation() as Presentation;
                     currentSlide = _pptManager?.GetCurrentSlideNumber() ?? 0;
@@ -1134,10 +1146,41 @@ namespace Ink_Canvas
         {
             try
             {
-                if (wn?.View == null || wn.Presentation == null) return;
+                int currentSlide = 0;
+                int totalSlides = 0;
 
-                int currentSlide = wn.View.CurrentShowPosition;
+                if (wn != null)
-                int totalSlides = wn.Presentation.Slides.Count;
+                {
+                    try
+                    {
+                        if (wn.View != null)
+                        {
+                            currentSlide = wn.View.CurrentShowPosition;
+                        }
+                    }
+                    catch (COMException comEx)
+                    {
+                        var hr = (uint)comEx.HResult;
+                        LogHelper.WriteLogToFile(
+                            $"通过 SlideShowWindow.View 获取当前页失败: {comEx.Message} (HR: 0x{hr:X8})，将回退到 PPT 管理器获取",
+                            LogHelper.LogType.Warning);
+                        currentSlide = 0;
+                    }
+                    catch (Exception ex)
+                    {
+                        LogHelper.WriteLogToFile(
+                            $"通过 SlideShowWindow.View 获取当前页时发生异常，将回退到 PPT 管理器获取: {ex}",
+                            LogHelper.LogType.Warning);
+                        currentSlide = 0;
+                    }
+                }
+
+                if (currentSlide <= 0)
+                {
+                    currentSlide = _pptManager?.GetCurrentSlideNumber() ?? 0;
+                }
+
+                totalSlides = _pptManager?.SlidesCount ?? 0;
 
                 if (currentSlide == _previousSlideID) return;