diff --git a/Ink Canvas/MainWindow_cs/MW_PPT.cs b/Ink Canvas/MainWindow_cs/MW_PPT.cs
index 7ccee9f7..88fd8915 100644
--- a/Ink Canvas/MainWindow_cs/MW_PPT.cs	
+++ b/Ink Canvas/MainWindow_cs/MW_PPT.cs	
@@ -70,9 +70,9 @@ namespace Ink_Canvas
 
         #region PPT Application Variables
         public static Microsoft.Office.Interop.PowerPoint.Application pptApplication;
-        public static Presentation presentation;
-        public static Slides slides;
-        public static Slide slide;
+        public static dynamic presentation;
+        public static dynamic slides;
+        public static dynamic slide;
         public static int slidescount;
         #endregion
 
@@ -523,6 +523,7 @@ namespace Ink_Canvas
         {
             try
             {
+                dynamic presObj = pres;
                 Application.Current.Dispatcher.InvokeAsync(() =>
                 {
                     // 在初始化墨迹管理器之前，先清理画布上的所有墨迹
@@ -534,26 +535,26 @@ namespace Ink_Canvas
                         TimeMachineHistories[0] = null;
                     }
 
-                    _singlePPTInkManager?.InitializePresentation(pres);
+                    _singlePPTInkManager?.InitializePresentation(presObj as Presentation);
 
                     // 处理跳转到首页或上次播放页的逻辑
-                    HandlePresentationOpenNavigation(pres);
+                    HandlePresentationOpenNavigation(presObj);
 
                     // 检查隐藏幻灯片
                     if (Settings.PowerPointSettings.IsNotifyHiddenPage)
                     {
-                        CheckAndNotifyHiddenSlides(pres);
+                        CheckAndNotifyHiddenSlides(presObj);
                     }
 
                     // 检查自动播放设置
                     if (Settings.PowerPointSettings.IsNotifyAutoPlayPresentation)
                     {
-                        CheckAndNotifyAutoPlaySettings(pres);
+                        CheckAndNotifyAutoPlaySettings(presObj);
                     }
 
                     _pptUIManager?.UpdateConnectionStatus(true);
 
-                    LogHelper.WriteLogToFile($"已打开新演示文稿: {pres.Name}，墨迹状态已清理", LogHelper.LogType.Event);
+                    LogHelper.WriteLogToFile($"已打开新演示文稿: {presObj.Name}，墨迹状态已清理", LogHelper.LogType.Event);
                 });
             }
             catch (Exception ex)
@@ -613,6 +614,7 @@ namespace Ink_Canvas
         {
             try
             {
+                dynamic wnObj = wn;
                 if (Settings.Automation.IsAutoFoldInPPTSlideShow)
                 {
                     if (!isFloatingBarFolded)
@@ -630,21 +632,21 @@ namespace Ink_Canvas
 
                 await Application.Current.Dispatcher.InvokeAsync(async () =>
                 {
-                    Presentation activePresentation = null;
+                    dynamic activePresentation = null;
                     int currentSlide = 0;
                     int totalSlides = 0;
 
-                    if (wn?.View != null && wn.Presentation != null)
+                    if (wnObj?.View != null && wnObj.Presentation != null)
                     {
-                        activePresentation = wn.Presentation;
-                        currentSlide = wn.View.CurrentShowPosition;
+                        activePresentation = wnObj.Presentation;
+                        currentSlide = wnObj.View.CurrentShowPosition;
                         totalSlides = activePresentation.Slides.Count;
                         // 初始化当前播放页码跟踪
                         _currentSlideShowPosition = currentSlide;
                     }
                     else
                     {
-                        activePresentation = _pptManager?.GetCurrentActivePresentation() as Presentation;
+                        activePresentation = _pptManager?.GetCurrentActivePresentation();
                         currentSlide = _pptManager?.GetCurrentSlideNumber() ?? 0;
                         totalSlides = _pptManager?.SlidesCount ?? 0;
                         // 初始化当前播放页码跟踪
@@ -657,7 +659,7 @@ namespace Ink_Canvas
                         {
                             try
                             {
-                                _singlePPTInkManager.InitializePresentation(activePresentation);
+                                _singlePPTInkManager.InitializePresentation(activePresentation as Presentation);
                             }
                             catch (Exception)
                             {
@@ -787,15 +789,16 @@ namespace Ink_Canvas
         {
             try
             {
+                dynamic wnObj = wn;
                 Application.Current.Dispatcher.InvokeAsync(() =>
                 {
-                    if (wn?.View == null || wn.Presentation == null)
+                    if (wnObj?.View == null || wnObj.Presentation == null)
                     {
                         return;
                     }
 
-                    var currentSlide = wn.View.CurrentShowPosition;
-                    var activePresentation = wn.Presentation;
+                    var currentSlide = wnObj.View.CurrentShowPosition;
+                    dynamic activePresentation = wnObj.Presentation;
                     var totalSlides = activePresentation.Slides.Count;
 
                     // 更新当前播放页码
@@ -816,6 +819,7 @@ namespace Ink_Canvas
         {
             try
             {
+                dynamic presObj = pres;
                 if (Settings.Automation.IsAutoFoldAfterPPTSlideShow && !isFloatingBarFolded)
                 {
                     FoldFloatingBar_MouseUp(new object(), null);
@@ -837,9 +841,9 @@ namespace Ink_Canvas
                         // 如果无法获取，尝试从演示文稿的SlideShowWindow获取
                         try
                         {
-                            if (pres.SlideShowWindow != null && pres.SlideShowWindow.View != null)
+                            if (presObj.SlideShowWindow != null && presObj.SlideShowWindow.View != null)
                             {
-                                currentPage = pres.SlideShowWindow.View.CurrentShowPosition;
+                                currentPage = presObj.SlideShowWindow.View.CurrentShowPosition;
                             }
                         }
                         catch { }
@@ -847,7 +851,7 @@ namespace Ink_Canvas
                 }
 
                 // 保存墨迹和位置信息
-                _singlePPTInkManager?.SaveAllStrokesToFile(pres, currentPage);
+                _singlePPTInkManager?.SaveAllStrokesToFile(presObj as Presentation, currentPage);
 
                 await Application.Current.Dispatcher.InvokeAsync(() =>
                 {
@@ -947,7 +951,7 @@ namespace Ink_Canvas
         #endregion
 
         #region Helper Methods
-        private void HandlePresentationOpenNavigation(Presentation pres)
+        private void HandlePresentationOpenNavigation(dynamic pres)
         {
             try
             {
@@ -966,7 +970,7 @@ namespace Ink_Canvas
             }
         }
 
-        private void ShowPreviousPageNotification(Presentation pres)
+        private void ShowPreviousPageNotification(dynamic pres)
         {
             try
             {
@@ -980,7 +984,7 @@ namespace Ink_Canvas
 
                 if (!File.Exists(positionFile)) return;
 
-                if (int.TryParse(File.ReadAllText(positionFile), out var page) && page > 0)
+                if (int.TryParse(File.ReadAllText(positionFile), out int page) && page > 0)
                 {
                     _lastPlaybackPage = page;
                     new YesOrNoNotificationWindow($"上次播放到了第 {page} 页, 是否立即跳转", () =>
@@ -1013,14 +1017,14 @@ namespace Ink_Canvas
             }
         }
 
-        private void CheckAndNotifyHiddenSlides(Presentation pres)
+        private void CheckAndNotifyHiddenSlides(dynamic pres)
         {
             try
             {
                 bool hasHiddenSlides = false;
                 if (pres?.Slides != null)
                 {
-                    foreach (Slide slide in pres.Slides)
+                    foreach (dynamic slide in pres.Slides)
                     {
                         if (slide.SlideShowTransition.Hidden == MsoTriState.msoTrue)
                         {
@@ -1040,7 +1044,7 @@ namespace Ink_Canvas
                             {
                                 if (pres?.Slides != null)
                                 {
-                                    foreach (Slide slide in pres.Slides)
+                                    foreach (dynamic slide in pres.Slides)
                                     {
                                         if (slide.SlideShowTransition.Hidden == MsoTriState.msoTrue)
                                             slide.SlideShowTransition.Hidden = MsoTriState.msoFalse;
@@ -1066,7 +1070,7 @@ namespace Ink_Canvas
             }
         }
 
-        private void CheckAndNotifyAutoPlaySettings(Presentation pres)
+        private void CheckAndNotifyAutoPlaySettings(dynamic pres)
         {
             try
             {
@@ -1075,7 +1079,7 @@ namespace Ink_Canvas
                 bool hasSlideTimings = false;
                 if (pres?.Slides != null)
                 {
-                    foreach (Slide slide in pres.Slides)
+                    foreach (dynamic slide in pres.Slides)
                     {
                         if (slide.SlideShowTransition.AdvanceOnTime == MsoTriState.msoTrue &&
                             slide.SlideShowTransition.AdvanceTime > 0)