优化代码

Ink Canvas/Helpers/MultiPPTInkManager.cs

@@ -3,6 +3,7 @@ using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
+using System.Runtime.InteropServices;
 using System.Security.Cryptography;
 using System.Text;
 using System.Windows.Ink;
@@ -78,7 +79,7 @@ namespace Ink_Canvas.Helpers
                     // 设置为当前活跃的演示文稿
                     _currentActivePresentationId = presentationId;
 
-                    LogHelper.WriteLogToFile($"已初始化多PPT墨迹管理: {presentation.Name} (ID: {presentationId})", LogHelper.LogType.Event);
+                    LogHelper.WriteLogToFile($"已初始化多PPT墨迹管理: {presentation.Name}, 幻灯片数量: {presentation.Slides.Count}", LogHelper.LogType.Event);
                 }
                 catch (Exception ex)
                 {
@@ -127,7 +128,10 @@ namespace Ink_Canvas.Helpers
                             _presentationInfos[presentationId].LastAccessTime = DateTime.Now;
                         }
 
-                        LogHelper.WriteLogToFile($"已切换到演示文稿: {presentation.Name} (ID: {presentationId})", LogHelper.LogType.Trace);
+                    if (_currentActivePresentationId != presentationId)
+                    {
+                        LogHelper.WriteLogToFile($"已切换到演示文稿: {presentation.Name}", LogHelper.LogType.Trace);
+                    }
                         return true;
                     }
                     else
@@ -445,11 +449,17 @@ namespace Ink_Canvas.Helpers
                         _currentActivePresentationId = "";
                     }
 
-                    LogHelper.WriteLogToFile($"已移除演示文稿管理器: {presentation.Name}", LogHelper.LogType.Trace);
+                    LogHelper.WriteLogToFile($"已移除演示文稿管理器: {presentationId}", LogHelper.LogType.Trace);
                 }
-                catch (Exception ex)
+                catch (COMException comEx)
+                {
+                    var hr = (uint)comEx.HResult;
+                    if (hr == 0x8001010E || hr == 0x80004005 || hr == 0x800706BA || hr == 0x800706BE || hr == 0x80048010)
+                    {
+                    }
+                }
+                catch (Exception)
                 {
-                    LogHelper.WriteLogToFile($"移除演示文稿管理器失败: {ex}", LogHelper.LogType.Error);
                 }
             }
         }
@@ -546,14 +556,28 @@ namespace Ink_Canvas.Helpers
         {
             try
             {
+                // 检查COM对象是否仍然有效
+                if (presentation == null)
+                {
+                    return $"invalid_{DateTime.Now.Ticks}";
+                }
+
                 var presentationPath = presentation.FullName;
                 var fileHash = GetFileHash(presentationPath);
                 var processId = GetProcessId(presentation);
                 return $"{presentation.Name}_{presentation.Slides.Count}_{fileHash}_{processId}";
             }
-            catch (Exception ex)
+            catch (COMException comEx)
+            {
+                var hr = (uint)comEx.HResult;
+                if (hr == 0x8001010E || hr == 0x80004005 || hr == 0x800706BA || hr == 0x800706BE || hr == 0x80048010)
+                {
+                    return $"disconnected_{DateTime.Now.Ticks}";
+                }
+                return $"error_{DateTime.Now.Ticks}";
+            }
+            catch (Exception)
             {
-                LogHelper.WriteLogToFile($"生成演示文稿ID失败: {ex}", LogHelper.LogType.Error);
                 return $"unknown_{DateTime.Now.Ticks}";
             }
         }
@@ -570,9 +594,9 @@ namespace Ink_Canvas.Helpers
                     return BitConverter.ToString(hashBytes).Replace("-", "").Substring(0, 8);
                 }
             }
-            catch (Exception ex)
+            catch (Exception)
             {
-                LogHelper.WriteLogToFile($"计算文件哈希值失败: {ex}", LogHelper.LogType.Error);
+                // 所有异常都静默处理，避免日志噪音
                 return "error";
             }
         }
@@ -593,9 +617,18 @@ namespace Ink_Canvas.Helpers
                 }
                 return "unknown";
             }
-            catch (Exception ex)
+            catch (COMException comEx)
+            {
+                // COM对象已失效，这是正常情况，完全静默处理
+                var hr = (uint)comEx.HResult;
+                if (hr == 0x8001010E || hr == 0x80004005 || hr == 0x800706BA || hr == 0x800706BE || hr == 0x80048010)
+                {
+                    return "disconnected";
+                }
+                return "error";
+            }
+            catch (Exception)
             {
-                LogHelper.WriteLogToFile($"获取进程ID失败: {ex}", LogHelper.LogType.Error);
                 return "error";
             }
         }

Ink Canvas/Helpers/PPTInkManager.cs

@@ -103,7 +103,10 @@ namespace Ink_Canvas.Helpers
                     // 检查墨迹锁定 
                     if (!CanWriteInk(slideIndex))
                     {
-                        LogHelper.WriteLogToFile($"墨迹写入被锁定，当前页:{slideIndex}，锁定页:{_lockedSlideIndex}", LogHelper.LogType.Warning);
+                        if (DateTime.Now < _inkLockUntil)
+                        {
+                            LogHelper.WriteLogToFile($"墨迹写入被锁定，当前页:{slideIndex}，锁定页:{_lockedSlideIndex}", LogHelper.LogType.Warning);
+                        }
                         return;
                     }
 
@@ -117,7 +120,10 @@ namespace Ink_Canvas.Helpers
                         _memoryStreams[slideIndex]?.Dispose();
                         _memoryStreams[slideIndex] = ms;
 
-                        LogHelper.WriteLogToFile($"已保存第{slideIndex}页墨迹，大小: {ms.Length} bytes", LogHelper.LogType.Trace);
+                        if (ms.Length > 0)
+                        {
+                            LogHelper.WriteLogToFile($"已保存第{slideIndex}页墨迹，大小: {ms.Length} bytes", LogHelper.LogType.Trace);
+                        }
                     }
                 }
                 catch (Exception ex)
@@ -215,7 +221,10 @@ namespace Ink_Canvas.Helpers
                     _lastSwitchTime = now;
                     _lastSwitchSlideIndex = slideIndex;
                     
-                    LogHelper.WriteLogToFile($"已切换到第{slideIndex}页，加载墨迹数量: {newStrokes.Count}", LogHelper.LogType.Trace);
+                    if (newStrokes.Count > 0)
+                    {
+                        LogHelper.WriteLogToFile($"已切换到第{slideIndex}页，加载墨迹数量: {newStrokes.Count}", LogHelper.LogType.Trace);
+                    }
 
                     return newStrokes;
                 }
@@ -386,9 +395,20 @@ namespace Ink_Canvas.Helpers
         /// </summary>
         public bool CanWriteInk(int currentSlideIndex)
         {
-            if (DateTime.Now < _inkLockUntil) return false;
+            // 如果锁定时间已过，允许写入
-            if (currentSlideIndex != _lockedSlideIndex && _lockedSlideIndex > 0) return false;
+            if (DateTime.Now >= _inkLockUntil)
-            return true;
+            {
+                return true;
+            }
+            
+            // 如果当前页面与锁定页面相同，允许写入（用户在当前页面绘制）
+            if (currentSlideIndex == _lockedSlideIndex)
+            {
+                return true;
+            }
+            
+            // 只有在快速切换且页面不同时才锁定
+            return false;
         }
 
         /// <summary>

Ink Canvas/Helpers/PPTManager.cs

@@ -277,16 +277,6 @@ namespace Ink_Canvas.Helpers
             catch (COMException ex)
             {
                 var hr = (uint)ex.HResult;
-                // 忽略常见的PowerPoint连接错误：
-                // 0x800401E3: 操作无法使用
-                // 0x80004005: 未指定错误
-                // 0x800706B5: RPC服务器不可用
-                // 0x8001010E: 应用程序调用一个已为另一线程整理的接口
-                // 0x800401F3: 无效的类字符串（PowerPoint未安装或COM组件未注册）
-                if (hr != 0x800401E3 && hr != 0x80004005 && hr != 0x800706B5 && hr != 0x8001010E && hr != 0x800401F3)
-                {
-                    LogHelper.WriteLogToFile($"连接PowerPoint失败: {ex}", LogHelper.LogType.Warning);
-                }
                 return null;
             }
             catch (InvalidCastException)
@@ -294,9 +284,8 @@ namespace Ink_Canvas.Helpers
                 // COM对象类型转换失败
                 return null;
             }
-            catch (Exception ex)
+            catch (Exception)
             {
-                LogHelper.WriteLogToFile($"连接PowerPoint时发生意外错误: {ex}", LogHelper.LogType.Warning);
                 return null;
             }
         }
@@ -422,12 +411,7 @@ namespace Ink_Canvas.Helpers
                                 }
                                 catch (COMException comEx)
                                 {
-                                    // COM对象已经被释放或在错误的线程中，忽略这些错误
                                     var hr = (uint)comEx.HResult;
-                                    if (hr != 0x8001010E && hr != 0x80004005 && hr != 0x800706B5)
-                                    {
-                                        LogHelper.WriteLogToFile($"取消PPT事件注册COM异常: {comEx}", LogHelper.LogType.Warning);
-                                    }
                                 }
                                 catch (InvalidCastException)
                                 {
@@ -437,10 +421,8 @@ namespace Ink_Canvas.Helpers
                             }, DispatcherPriority.Normal, CancellationToken.None, TimeSpan.FromSeconds(1));
                         }
                     }
-                    catch (Exception ex)
+                    catch (Exception)
                     {
-                        // 记录但不抛出异常，确保清理过程能够继续
-                        LogHelper.WriteLogToFile($"取消PPT事件注册失败: {ex.GetType().Name} - {ex.Message}", LogHelper.LogType.Warning);
                     }
 
                     // 释放COM对象
@@ -451,9 +433,8 @@ namespace Ink_Canvas.Helpers
                             Marshal.ReleaseComObject(CurrentSlide);
                         }
                     }
-                    catch (Exception ex)
+                    catch (Exception)
                     {
-                        LogHelper.WriteLogToFile($"释放CurrentSlide COM对象失败: {ex}", LogHelper.LogType.Warning);
                     }
 
                     try
@@ -463,9 +444,8 @@ namespace Ink_Canvas.Helpers
                             Marshal.ReleaseComObject(CurrentSlides);
                         }
                     }
-                    catch (Exception ex)
+                    catch (Exception)
                     {
-                        LogHelper.WriteLogToFile($"释放CurrentSlides COM对象失败: {ex}", LogHelper.LogType.Warning);
                     }
 
                     try
@@ -475,9 +455,8 @@ namespace Ink_Canvas.Helpers
                             Marshal.ReleaseComObject(CurrentPresentation);
                         }
                     }
-                    catch (Exception ex)
+                    catch (Exception)
                     {
-                        LogHelper.WriteLogToFile($"释放CurrentPresentation COM对象失败: {ex}", LogHelper.LogType.Warning);
                     }
 
                     try
@@ -487,9 +466,8 @@ namespace Ink_Canvas.Helpers
                             Marshal.ReleaseComObject(PPTApplication);
                         }
                     }
-                    catch (Exception ex)
+                    catch (Exception)
                     {
-                        LogHelper.WriteLogToFile($"释放PPTApplication COM对象失败: {ex}", LogHelper.LogType.Warning);
                     }
 
                     // 清理引用

Ink Canvas/Helpers/PPTUIManager.cs

@@ -86,7 +86,6 @@ namespace Ink_Canvas.Helpers
                         {
                             _mainWindow.PPTBtnPageNow.Text = currentSlide.ToString();
                             _mainWindow.PPTBtnPageTotal.Text = $"/ {totalSlides}";
-                            LogHelper.WriteLogToFile($"更新PPT页码显示: {currentSlide}/{totalSlides}", LogHelper.LogType.Trace);
                         }
                         else
                         {
@@ -127,7 +126,6 @@ namespace Ink_Canvas.Helpers
                     {
                         _mainWindow.PPTBtnPageNow.Text = currentSlide.ToString();
                         _mainWindow.PPTBtnPageTotal.Text = $"/ {totalSlides}";
-                        LogHelper.WriteLogToFile($"更新PPT页码显示: {currentSlide}/{totalSlides}", LogHelper.LogType.Trace);
                     }
                     else
                     {

Ink Canvas/MainWindow_cs/MW_PPT.cs

@@ -578,9 +578,16 @@ namespace Ink_Canvas
                     _pptUIManager?.UpdateConnectionStatus(false);
                 });
             }
-            catch (Exception ex)
+            catch (COMException comEx)
+            {
+                // COM对象已失效，这是正常情况，完全静默处理
+                var hr = (uint)comEx.HResult;
+                if (hr == 0x8001010E || hr == 0x80004005 || hr == 0x800706BA || hr == 0x800706BE || hr == 0x80048010)
+                {
+                }
+            }
+            catch (Exception)
             {
-                LogHelper.WriteLogToFile($"处理演示文稿关闭事件失败: {ex}", LogHelper.LogType.Error);
             }
         }
 

Ink Canvas/Windows/CountdownTimerWindow.xaml.cs

@@ -222,7 +222,6 @@ namespace Ink_Canvas
                 BtnStartCover.Visibility = Visibility.Collapsed;
                 BorderStopTime.Visibility = Visibility.Collapsed;
                 TextBlockHour.Foreground = new SolidColorBrush(StringToColor("#FF5B5D5F"));
-                return;
             }
             else if (isTimerRunning && isPaused)
             {