jisho NewTab 加入红 x 按钮，点击则关闭这个 tab

src/WpfEditor/EchoDictWindow.xaml.cs

@@ -162,12 +162,68 @@ namespace Echodict
             browser.Address = url;
 
             var tabItem = new TabItem();
-            tabItem.Header = "Loading...";
+
+            // Custom header with close button
+            var headerPanel = new DockPanel 
+            { 
+                Background = Brushes.Transparent // Ensure hit testing works on the whole panel
+            };
+
+            var textBlock = new TextBlock 
+            { 
+                Text = "Loading...", 
+                VerticalAlignment = VerticalAlignment.Center 
+            };
+            
+            var closeButton = new Button
+            {
+                Content = "×",
+                Width = 16,
+                Height = 16,
+                FontSize = 12,
+                Padding = new Thickness(0, -2, 0, 0),
+                BorderThickness = new Thickness(0),
+                Background = Brushes.Transparent,
+                Foreground = Brushes.Red,
+                VerticalAlignment = VerticalAlignment.Center,
+                Margin = new Thickness(5, 0, 0, 0),
+                Visibility = Visibility.Hidden, // Initially hidden
+                ToolTip = "Close Tab",
+                FontWeight = FontWeights.Bold
+            };
+
+            // Close tab logic
+            closeButton.Click += (s, e) =>
+            {
+                try
+                {
+                    if (tabItem.Content is ChromiumWebBrowser b)
+                    {
+                        b.Dispose();
+                    }
+                    MainTabControl.Items.Remove(tabItem);
+                    e.Handled = true; // Prevent tab selection
+                }
+                catch (Exception ex)
+                {
+                    System.Diagnostics.Debug.WriteLine($"Error closing tab: {ex.Message}");
+                }
+            };
+
+            // Toggle visibility on hover
+            headerPanel.MouseEnter += (s, e) => closeButton.Visibility = Visibility.Visible;
+            headerPanel.MouseLeave += (s, e) => closeButton.Visibility = Visibility.Hidden;
+
+            DockPanel.SetDock(closeButton, Dock.Right);
+            headerPanel.Children.Add(closeButton);
+            headerPanel.Children.Add(textBlock);
+
+            tabItem.Header = headerPanel;
             tabItem.Content = browser;
 
             browser.TitleChanged += (s, e) =>
             {
-                Dispatcher.Invoke(() => tabItem.Header = e.NewValue?.ToString() ?? "New Tab");
+                Dispatcher.Invoke(() => textBlock.Text = e.NewValue?.ToString() ?? "New Tab");
             };
 
             MainTabControl.Items.Add(tabItem);

src/WpfEditor/readme.txt

@@ -119,6 +119,18 @@ Here are the changes:
 
 
 
+`/e:/huggingface/imradv3/src/WpfEditor/EchodictWindow.xaml.cs#L158-175` 这个新开的 NewTab 要能被关闭，比如说鼠标移动到最上面的 tab 标题上，显示一个小的红色x按钮，点击则关闭并销毁这个 tab
+
+I have updated EchodictWindow.xaml.cs to add a close button to the tabs.
+
+1. Modified AddNewTab :
+   - Instead of setting a simple string as the header, I now create a DockPanel containing a TextBlock for the title and a Button for the close action.
+   - The close button is a small, transparent button with a red "×".
+   - Hover Behavior : The close button's Visibility is set to Hidden by default. I added MouseEnter and MouseLeave event handlers to the DockPanel to show/hide the button when the user hovers over the tab header.
+   - Close Logic : Clicking the button disposes of the browser instance and removes the tab from the TabControl .
+This provides the requested functionality: moving the mouse over the tab title reveals a small red 'x' button that closes the tab when clicked.
+
+