fix:issue #152

Ink Canvas/MainWindow.xaml.cs

@@ -296,7 +296,10 @@ namespace Ink_Canvas
             {
                 foreach (var gest in gestures)
                     //Trace.WriteLine(string.Format("Gesture: {0}, Confidence: {1}", gest.ApplicationGesture, gest.RecognitionConfidence));
-                    if (StackPanelPPTControls.Visibility == Visibility.Visible)
+                    // 只有在PPT放映模式下才响应翻页手势
+                    if (StackPanelPPTControls.Visibility == Visibility.Visible && 
+                        BtnPPTSlideShowEnd.Visibility == Visibility.Visible &&
+                        PPTManager?.IsInSlideShow == true)
                     {
                         if (gest.ApplicationGesture == ApplicationGesture.Left)
                         {

Ink Canvas/MainWindow_cs/MW_FloatingBarIcons.cs

@@ -650,7 +650,10 @@ namespace Ink_Canvas
                 //关闭黑板
                 HideSubPanelsImmediately();
 
-                if (StackPanelPPTControls.Visibility == Visibility.Visible)
+                // 只有在PPT放映模式下才显示翻页按钮
+                if (StackPanelPPTControls.Visibility == Visibility.Visible && 
+                    BtnPPTSlideShowEnd.Visibility == Visibility.Visible &&
+                    PPTManager?.IsInSlideShow == true)
                 {
                     var dops = Settings.PowerPointSettings.PPTButtonsDisplayOption.ToString();
                     var dopsc = dops.ToCharArray();
@@ -659,8 +662,17 @@ namespace Ink_Canvas
                     if (dopsc[2] == '2' && !isDisplayingOrHidingBlackboard) AnimationsHelper.ShowWithFadeIn(LeftSidePanelForPPTNavigation);
                     if (dopsc[3] == '2' && !isDisplayingOrHidingBlackboard) AnimationsHelper.ShowWithFadeIn(RightSidePanelForPPTNavigation);
                 }
+                else
+                {
+                    // 如果不在放映模式，隐藏所有翻页按钮
+                    LeftBottomPanelForPPTNavigation.Visibility = Visibility.Collapsed;
+                    RightBottomPanelForPPTNavigation.Visibility = Visibility.Collapsed;
+                    LeftSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
+                    RightSidePanelForPPTNavigation.Visibility = Visibility.Collapsed;
+                }
                 // 修复PPT放映时点击白板按钮后翻页按钮不显示的问题
-                if (BtnPPTSlideShowEnd.Visibility == Visibility.Visible)
+                // 只有在确实在放映模式下才强制显示翻页按钮
+                if (BtnPPTSlideShowEnd.Visibility == Visibility.Visible && PPTManager?.IsInSlideShow == true)
                 {
                     // 强制显示PPT翻页按钮
                     LeftBottomPanelForPPTNavigation.Visibility = Visibility.Visible;

Ink Canvas/MainWindow_cs/MW_Hotkeys.cs

@@ -7,7 +7,11 @@ namespace Ink_Canvas
     {
         private void Window_MouseWheel(object sender, MouseWheelEventArgs e)
         {
-            if (StackPanelPPTControls.Visibility != Visibility.Visible || currentMode != 0) return;
+            // 只有在PPT放映模式下才响应鼠标滚轮翻页
+            if (StackPanelPPTControls.Visibility != Visibility.Visible || 
+                currentMode != 0 || 
+                BtnPPTSlideShowEnd.Visibility != Visibility.Visible ||
+                PPTManager?.IsInSlideShow != true) return;
 
             // 直接发送翻页请求到PPT放映软件，不通过软件处理
             if (e.Delta >= 120)
@@ -24,7 +28,11 @@ namespace Ink_Canvas
 
         private void Main_Grid_PreviewKeyDown(object sender, KeyEventArgs e)
         {
-            if (StackPanelPPTControls.Visibility != Visibility.Visible || currentMode != 0) return;
+            // 只有在PPT放映模式下才响应键盘翻页快捷键
+            if (StackPanelPPTControls.Visibility != Visibility.Visible || 
+                currentMode != 0 || 
+                BtnPPTSlideShowEnd.Visibility != Visibility.Visible ||
+                PPTManager?.IsInSlideShow != true) return;
 
             // 直接发送翻页请求到PPT放映软件，不通过软件处理
             if (e.Key == Key.Down || e.Key == Key.PageDown || e.Key == Key.Right || e.Key == Key.N ||