From 610418b42b40ab59ad73538df1a797b219a13189 Mon Sep 17 00:00:00 2001
From: 2dust <31833384+2dust@users.noreply.github.com>
Date: Wed, 6 Aug 2025 21:01:06 +0800
Subject: [PATCH] In the Desktop version, the information box uses
 SelectableTextBlock to replace TextBox

https://github.com/2dust/v2rayN/issues/7644
---
 .../ViewModels/ThemeSettingViewModel.cs       |  2 +
 v2rayN/v2rayN.Desktop/Views/MsgView.axaml     | 59 ++++++++++---------
 v2rayN/v2rayN.Desktop/Views/MsgView.axaml.cs  |  8 ++-
 3 files changed, 38 insertions(+), 31 deletions(-)

diff --git a/v2rayN/v2rayN.Desktop/ViewModels/ThemeSettingViewModel.cs b/v2rayN/v2rayN.Desktop/ViewModels/ThemeSettingViewModel.cs
index ea1a3b66..877a3b4f 100644
--- a/v2rayN/v2rayN.Desktop/ViewModels/ThemeSettingViewModel.cs
+++ b/v2rayN/v2rayN.Desktop/ViewModels/ThemeSettingViewModel.cs
@@ -107,6 +107,7 @@ public class ThemeSettingViewModel : MyReactiveObject
             x.OfType<Button>(),
             x.OfType<TextBox>(),
             x.OfType<TextBlock>(),
+            x.OfType<SelectableTextBlock>(),
             x.OfType<Menu>(),
             x.OfType<ContextMenu>(),
             x.OfType<DataGridRow>(),
@@ -146,6 +147,7 @@ public class ThemeSettingViewModel : MyReactiveObject
                 x.OfType<Button>(),
                 x.OfType<TextBox>(),
                 x.OfType<TextBlock>(),
+                x.OfType<SelectableTextBlock>(),
                 x.OfType<Menu>(),
                 x.OfType<ContextMenu>(),
                 x.OfType<DataGridRow>(),
diff --git a/v2rayN/v2rayN.Desktop/Views/MsgView.axaml b/v2rayN/v2rayN.Desktop/Views/MsgView.axaml
index a9875c76..3668b81e 100644
--- a/v2rayN/v2rayN.Desktop/Views/MsgView.axaml
+++ b/v2rayN/v2rayN.Desktop/Views/MsgView.axaml
@@ -69,34 +69,35 @@
                 IsChecked="True"
                 Theme="{DynamicResource SimpleToggleSwitch}" />
         </WrapPanel>
-        <TextBox
-            Name="txtMsg"
-            VerticalAlignment="Stretch"
-            BorderThickness="0"
-            Classes="TextArea"
-            IsReadOnly="True"
-            TextAlignment="Left"
-            TextWrapping="Wrap">
-            <TextBox.ContextMenu>
-                <ContextMenu>
-                    <MenuItem
-                        x:Name="menuMsgViewSelectAll"
-                        Click="menuMsgViewSelectAll_Click"
-                        Header="{x:Static resx:ResUI.menuMsgViewSelectAll}" />
-                    <MenuItem
-                        x:Name="menuMsgViewCopy"
-                        Click="menuMsgViewCopy_Click"
-                        Header="{x:Static resx:ResUI.menuMsgViewCopy}" />
-                    <MenuItem
-                        x:Name="menuMsgViewCopyAll"
-                        Click="menuMsgViewCopyAll_Click"
-                        Header="{x:Static resx:ResUI.menuMsgViewCopyAll}" />
-                    <MenuItem
-                        x:Name="menuMsgViewClear"
-                        Click="menuMsgViewClear_Click"
-                        Header="{x:Static resx:ResUI.menuMsgViewClear}" />
-                </ContextMenu>
-            </TextBox.ContextMenu>
-        </TextBox>
+
+        <ScrollViewer x:Name="msgScrollViewer" VerticalScrollBarVisibility="Auto">
+            <SelectableTextBlock
+                Name="txtMsg"
+                VerticalAlignment="Stretch"
+                Classes="TextArea"
+                TextAlignment="Left"
+                TextWrapping="Wrap">
+                <SelectableTextBlock.ContextMenu>
+                    <ContextMenu>
+                        <MenuItem
+                            x:Name="menuMsgViewSelectAll"
+                            Click="menuMsgViewSelectAll_Click"
+                            Header="{x:Static resx:ResUI.menuMsgViewSelectAll}" />
+                        <MenuItem
+                            x:Name="menuMsgViewCopy"
+                            Click="menuMsgViewCopy_Click"
+                            Header="{x:Static resx:ResUI.menuMsgViewCopy}" />
+                        <MenuItem
+                            x:Name="menuMsgViewCopyAll"
+                            Click="menuMsgViewCopyAll_Click"
+                            Header="{x:Static resx:ResUI.menuMsgViewCopyAll}" />
+                        <MenuItem
+                            x:Name="menuMsgViewClear"
+                            Click="menuMsgViewClear_Click"
+                            Header="{x:Static resx:ResUI.menuMsgViewClear}" />
+                    </ContextMenu>
+                </SelectableTextBlock.ContextMenu>
+            </SelectableTextBlock>
+        </ScrollViewer>
     </DockPanel>
 </UserControl>
diff --git a/v2rayN/v2rayN.Desktop/Views/MsgView.axaml.cs b/v2rayN/v2rayN.Desktop/Views/MsgView.axaml.cs
index f606a10b..e2d21101 100644
--- a/v2rayN/v2rayN.Desktop/Views/MsgView.axaml.cs
+++ b/v2rayN/v2rayN.Desktop/Views/MsgView.axaml.cs
@@ -1,4 +1,5 @@
 using System.Reactive.Disposables;
+using Avalonia.Controls;
 using Avalonia.Interactivity;
 using Avalonia.ReactiveUI;
 using Avalonia.Threading;
@@ -9,9 +10,12 @@ namespace v2rayN.Desktop.Views;
 
 public partial class MsgView : ReactiveUserControl<MsgViewModel>
 {
+    private readonly ScrollViewer _scrollViewer;
+
     public MsgView()
     {
         InitializeComponent();
+        _scrollViewer = this.FindControl<ScrollViewer>("msgScrollViewer");
 
         ViewModel = new MsgViewModel(UpdateViewHandler);
 
@@ -43,14 +47,14 @@ public partial class MsgView : ReactiveUserControl<MsgViewModel>
         txtMsg.Text = msg.ToString();
         if (togScrollToEnd.IsChecked ?? true)
         {
-            txtMsg.CaretIndex = int.MaxValue;
+            _scrollViewer?.ScrollToEnd();
         }
     }
 
     public void ClearMsg()
     {
         ViewModel?.ClearMsg();
-        txtMsg.Clear();
+        txtMsg.Text = "";
     }
 
     private void menuMsgViewSelectAll_Click(object? sender, RoutedEventArgs e)