diff --git a/Ink Canvas/MainWindow.xaml b/Ink Canvas/MainWindow.xaml
index 192642cc..6c089f0f 100644
--- a/Ink Canvas/MainWindow.xaml	
+++ b/Ink Canvas/MainWindow.xaml	
@@ -1467,7 +1467,7 @@
                                     <Border ClipToBounds="True" Width="324" Height="182">
                                         <Grid>
                                             <Image Source="Resources/PresentationExample/page.jpg" Width="324" Height="182" Stretch="Fill"></Image>
-                                            <Image Name="PPTBtnPreviewToolbar" Source="Resources/PresentationExample/toolbar.png" Height="16" Width="324"
+                                            <Image Name="PPTBtnPreviewToolbar" Source="Resources/PresentationExample/toolbar.png" Height="16"
                                                    VerticalAlignment="Bottom" HorizontalAlignment="Center" Stretch="Uniform" />
                                             <Image Name="PPTBtnPreviewLS" Source="Resources/PresentationExample/sidebar-white.png" Width="10" Height="30"
                                                    VerticalAlignment="Center" HorizontalAlignment="Left" RenderTransformOrigin="0.5,0.5" Stretch="Fill">
diff --git a/Ink Canvas/MainWindow_cs/MW_Settings.cs b/Ink Canvas/MainWindow_cs/MW_Settings.cs
index 1d70fe8f..08262e96 100644
--- a/Ink Canvas/MainWindow_cs/MW_Settings.cs	
+++ b/Ink Canvas/MainWindow_cs/MW_Settings.cs	
@@ -1075,13 +1075,15 @@ namespace Ink_Canvas
             }
             
             // 计算工具栏的实际尺寸
-            const double baseToolbarHeight = 20.0; 
+            const double baseToolbarHeight = 24.0; 
+            
             double actualToolbarHeight = baseToolbarHeight * dpiScaleY;
             double scaledToolbarHeight = actualToolbarHeight * scaleY;
+            double scaledToolbarWidth = previewWidth;
             
             // 设置工具栏尺寸
             PPTBtnPreviewToolbar.Height = scaledToolbarHeight;
-            PPTBtnPreviewToolbar.Width = previewWidth; 
+            PPTBtnPreviewToolbar.Width = scaledToolbarWidth; 
         }
 
         private void ToggleSwitchShowCursor_Toggled(object sender, RoutedEventArgs e)