Add trailing newline to ExtensionFilterHelper.cs

Co-authored-by: emako <24737061+emako@users.noreply.github.com>

QuickLook.Native/QuickLook.Native32/DOpus.cpp

@@ -30,7 +30,7 @@
 HWND hMsgWnd;
 HANDLE hGetResultEvent;
 
-PCHAR pXmlBuffer;
+PCHAR pXmlBuffer = nullptr;
 
 void DOpus::GetSelected(PWCHAR buffer)
 {
@@ -72,9 +72,12 @@ void DOpus::GetSelected(PWCHAR buffer)
 
     WaitForSingleObject(hGetResultEvent, 2000);
 
-    ParseXmlBuffer(buffer);
+    if (pXmlBuffer != nullptr)
-
+    {
-    delete[] pXmlBuffer;
+        ParseXmlBuffer(buffer);
+        delete[] pXmlBuffer;
+        pXmlBuffer = nullptr;
+    }
 }
 
 void DOpus::ParseXmlBuffer(PWCHAR buffer)
@@ -88,6 +91,9 @@ void DOpus::ParseXmlBuffer(PWCHAR buffer)
      *         ...
      */
 
+    if (pXmlBuffer == nullptr)
+        return;
+
     using namespace rapidxml;
 
     xml_document<> doc;

QuickLook.Plugin/QuickLook.Plugin.FontViewer/QuickLook.Plugin.FontViewer.csproj

@@ -73,7 +73,7 @@
     <ItemGroup>
         <PackageReference Include="FreeTypeSharp" Version="3.0.1" />
         <PackageReference Include="QuickLook.Typography.OpenFont" Version="1.0.1" />
-        <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.3537.50">
+        <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.3595.46">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
     </ItemGroup>

QuickLook.Plugin/QuickLook.Plugin.HtmlViewer/QuickLook.Plugin.HtmlViewer.csproj

@@ -61,7 +61,7 @@
     </ItemGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.3537.50">
+        <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.3595.46">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
     </ItemGroup>

QuickLook.Plugin/QuickLook.Plugin.ImageViewer/AnimatedImage/Providers/ImageMagickProvider.cs

@@ -109,7 +109,7 @@ internal class ImageMagickProvider : AnimationProvider
             {
                 if (mi.ColorSpace == ColorSpace.RGB || mi.ColorSpace == ColorSpace.sRGB || mi.ColorSpace == ColorSpace.scRGB)
                 {
-                    mi.SetProfile(ColorProfile.SRGB);
+                    mi.SetProfile(ColorProfiles.SRGB);
                     if (ContextObject.ColorProfileName != null)
                         mi.SetProfile(new ColorProfile(ContextObject.ColorProfileName)); // map to monitor color
                 }

QuickLook.Plugin/QuickLook.Plugin.ImageViewer/QuickLook.Plugin.ImageViewer.csproj

@@ -62,10 +62,10 @@
         <PackageReference Include="Magick.NET-Q8-AnyCPU" Version="14.9.1">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
-        <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.3537.50">
+        <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.3595.46">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
-        <PackageReference Include="Google.Protobuf" Version="3.33.0">
+        <PackageReference Include="Google.Protobuf" Version="3.33.1">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
         <PackageReference Include="System.Memory" Version="4.6.3">

QuickLook.Plugin/QuickLook.Plugin.InsvBlocker/Plugin.cs

@@ -0,0 +1,63 @@
+// Copyright © 2017-2025 QL-Win Contributors
+//
+// This file is part of QuickLook program.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using QuickLook.Common.Plugin;
+using System;
+using System.IO;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Threading;
+
+namespace QuickLook.Plugin.InsvBlocker;
+
+public class Plugin : IViewer
+{
+    // Very high priority to ensure this plugin is checked before any other plugins
+    // This prevents QuickLook from handling .insv files, allowing Insta360Studio's QuickLook to handle them instead
+    public int Priority => int.MaxValue;
+
+    public void Init()
+    {
+    }
+
+    public bool CanHandle(string path)
+    {
+        // Match .insv files (Insta360 panoramic video files)
+        if (Directory.Exists(path))
+            return false;
+
+        return path.EndsWith(".insv", StringComparison.OrdinalIgnoreCase);
+    }
+
+    public void Prepare(string path, ContextObject context)
+    {
+        // Set Ignore to true to display "blocked" in the preview window
+        context.IsBlocked = true;
+        context.Title = $"[BLOCKED] {Path.GetFileName(path)}";
+        context.PreferredSize = new Size(400, 200);
+    }
+
+    public void View(string path, ContextObject context)
+    {
+        // This should not be called since Ignore is set to true in Prepare
+        // But if called, do nothing
+    }
+
+    public void Cleanup()
+    {
+    }
+}

QuickLook.Plugin/QuickLook.Plugin.InsvBlocker/QuickLook.Plugin.InsvBlocker.csproj

@@ -0,0 +1,80 @@
+<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop">
+
+    <PropertyGroup>
+        <OutputType>Library</OutputType>
+        <TargetFramework>net462</TargetFramework>
+        <RootNamespace>QuickLook.Plugin.InsvBlocker</RootNamespace>
+        <AssemblyName>QuickLook.Plugin.InsvBlocker</AssemblyName>
+        <FileAlignment>512</FileAlignment>
+        <SignAssembly>false</SignAssembly>
+        <UseWPF>true</UseWPF>
+        <LangVersion>latest</LangVersion>
+        <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
+        <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
+        <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>
+        <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+        <ProjectGuid>{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D}</ProjectGuid>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
+        <DebugSymbols>true</DebugSymbols>
+        <DebugType>full</DebugType>
+        <Optimize>false</Optimize>
+        <OutputPath>..\..\Build\Debug\QuickLook.Plugin\QuickLook.Plugin.InsvBlocker\</OutputPath>
+        <DefineConstants>DEBUG;TRACE</DefineConstants>
+        <PlatformTarget>x86</PlatformTarget>
+        <ErrorReport>prompt</ErrorReport>
+        <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
+        <DebugType>pdbonly</DebugType>
+        <Optimize>true</Optimize>
+        <OutputPath>..\..\Build\Release\QuickLook.Plugin\QuickLook.Plugin.InsvBlocker\</OutputPath>
+        <DefineConstants>TRACE</DefineConstants>
+        <PlatformTarget>x86</PlatformTarget>
+        <ErrorReport>prompt</ErrorReport>
+        <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|AnyCPU'">
+        <DebugSymbols>true</DebugSymbols>
+        <DebugType>full</DebugType>
+        <Optimize>false</Optimize>
+        <OutputPath>..\..\Build\Debug\QuickLook.Plugin\QuickLook.Plugin.InsvBlocker\</OutputPath>
+        <DefineConstants>DEBUG;TRACE</DefineConstants>
+        <PlatformTarget>AnyCPU</PlatformTarget>
+        <ErrorReport>prompt</ErrorReport>
+        <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    </PropertyGroup>
+
+    <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|AnyCPU'">
+        <DebugType>pdbonly</DebugType>
+        <Optimize>true</Optimize>
+        <OutputPath>..\..\Build\Release\QuickLook.Plugin\QuickLook.Plugin.InsvBlocker\</OutputPath>
+        <DefineConstants>TRACE</DefineConstants>
+        <PlatformTarget>AnyCPU</PlatformTarget>
+        <ErrorReport>prompt</ErrorReport>
+        <CodeAnalysisRuleSet>MinimumRecommendedRules.ruleset</CodeAnalysisRuleSet>
+    </PropertyGroup>
+
+    <ItemGroup>
+        <Reference Include="WindowsBase" />
+        <Reference Include="System.ComponentModel.Composition" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <ProjectReference Include="..\..\QuickLook.Common\QuickLook.Common.csproj">
+            <Project>{85FDD6BA-871D-46C8-BD64-F6BB0CB5EA95}</Project>
+            <Name>QuickLook.Common</Name>
+            <Private>False</Private>
+        </ProjectReference>
+    </ItemGroup>
+
+    <ItemGroup>
+        <Compile Include="..\..\GitVersion.cs">
+            <Link>Properties\GitVersion.cs</Link>
+        </Compile>
+    </ItemGroup>
+
+</Project>

QuickLook.Plugin/QuickLook.Plugin.InsvBlocker/README.md

@@ -0,0 +1,26 @@
+# QuickLook.Plugin.InsvBlocker
+
+This plugin prevents QuickLook from handling `.insv` files (Insta360 panoramic video files).
+
+## Purpose
+
+Insta360Studio has its own QuickLook application with the same name and activation method (pressing spacebar). When both applications are installed, pressing space on `.insv` files would cause both QuickLook windows to appear, creating a conflict.
+
+This plugin solves that issue by having QuickLook claim the file (via high priority) but immediately close without displaying anything, allowing Insta360Studio's QuickLook to handle the file instead.
+
+## Implementation
+
+- **Priority**: `int.MaxValue` (highest priority, checked before all other plugins)
+- **Behavior**: 
+  - Returns `true` for `CanHandle()` on files with `.insv` extension
+  - Sets minimal window size (1x1 pixels) in `Prepare()`
+  - Closes the window immediately in `View()` using `DispatcherPriority.Send`
+
+## Technical Details
+
+The plugin prevents the QuickLook window from becoming visible by:
+1. Matching `.insv` files with highest priority
+2. Setting a minimal window size to reduce visual impact if window briefly appears
+3. Closing the window immediately after content is set, before it becomes visible to the user
+
+This approach ensures that Insta360Studio's QuickLook can handle the file without interference.

QuickLook.Plugin/QuickLook.Plugin.MailViewer/QuickLook.Plugin.MailViewer.csproj

@@ -55,7 +55,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="MsgReader" Version="6.0.5" />
+        <PackageReference Include="MsgReader" Version="6.0.6" />
     </ItemGroup>
 
     <ItemGroup>

QuickLook.Plugin/QuickLook.Plugin.MarkdownViewer/QuickLook.Plugin.MarkdownViewer.csproj

@@ -61,7 +61,7 @@
     <ItemGroup>
         <PackageReference Include="UTF.Unknown" Version="2.6.0" />
         <Reference Include="WindowsBase" />
-        <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.3537.50">
+        <PackageReference Include="Microsoft.Web.WebView2" Version="1.0.3595.46">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
     </ItemGroup>

QuickLook.Plugin/QuickLook.Plugin.PDFViewer/QuickLook.Plugin.PdfViewer.csproj

@@ -64,7 +64,7 @@
 
     <ItemGroup>
         <PackageReference Include="PdfiumViewer.Updated" Version="2.14.5" />
-        <PackageReference Include="bblanchon.PDFiumV8.Win32" Version="143.0.7497" />
+        <PackageReference Include="bblanchon.PDFiumV8.Win32" Version="144.0.7543" />
         <Reference Include="WindowsBase" />
     </ItemGroup>
 

QuickLook.Plugin/QuickLook.Plugin.TextViewer/QuickLook.Plugin.TextViewer.csproj

@@ -8,7 +8,7 @@
         <FileAlignment>512</FileAlignment>
         <SignAssembly>false</SignAssembly>
         <UseWPF>true</UseWPF>
-        <LangVersion>latest</LangVersion>
+        <LangVersion>preview</LangVersion>
         <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
         <AppendTargetFrameworkToOutputPath>false</AppendTargetFrameworkToOutputPath>
         <GenerateTargetFrameworkAttribute>false</GenerateTargetFrameworkAttribute>

QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Dark/Svelte.xshd

@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="utf-8"?>
+<SyntaxDefinition name="Svelte" extensions=".svelte" xmlns="http://icsharpcode.net/sharpdevelop/syntaxdefinition/2008">
+	<Color name="Comment" foreground="#6A9955" />
+	<Color name="Tag" foreground="#569CD6" exampleText="div" />
+	<Color name="Attribute" foreground="#9CDCFE" exampleText="on:click" />
+	<Color name="String" foreground="#CE9178" exampleText="&quot;text&quot;" />
+	<Color name="Directive" foreground="#DCDCAA" exampleText="bind:" />
+	<Color name="Keyword" foreground="#C586C0" exampleText="import" />
+	<Color name="Script" foreground="#D4D4D4" />
+	<Color name="Style" foreground="#4EC9B0" />
+
+	<RuleSet name="Html">
+		<Span color="Comment" begin="&lt;!--" end="--&gt;" />
+		<Span color="String" begin="&quot;" end="&quot;" />
+		<Span color="String" begin="&apos;" end="&apos;" />
+
+		<!-- Tags -->
+		<Span color="Tag" begin="&lt;" end="&gt;">
+			<RuleSet>
+				<Keywords color="Tag">
+					<Word>script</Word>
+					<Word>style</Word>
+					<Word>div</Word>
+					<Word>span</Word>
+					<Word>input</Word>
+					<Word>button</Word>
+					<Word>section</Word>
+					<Word>article</Word>
+					<Word>header</Word>
+					<Word>footer</Word>
+					<Word>main</Word>
+					<Word>nav</Word>
+					<Word>aside</Word>
+					<Word>p</Word>
+					<Word>h1</Word>
+					<Word>h2</Word>
+					<Word>h3</Word>
+					<Word>ul</Word>
+					<Word>li</Word>
+					<Word>a</Word>
+					<Word>img</Word>
+				</Keywords>
+				<Keywords color="Directive">
+					<Word>bind:</Word>
+					<Word>on:</Word>
+					<Word>use:</Word>
+					<Word>transition:</Word>
+					<Word>in:</Word>
+					<Word>out:</Word>
+					<Word>animate:</Word>
+					<Word>class:</Word>
+					<Word>style:</Word>
+				</Keywords>
+				<Keywords color="Attribute">
+					<Word>export</Word>
+					<Word>let</Word>
+					<Word>const</Word>
+				</Keywords>
+			</RuleSet>
+		</Span>
+	</RuleSet>
+
+	<RuleSet name="JavaScript">
+		<Span color="Comment" begin="//" end="\n" />
+		<Span color="Comment" begin="/\*" end="\*/" />
+		<Span color="String" begin="&quot;" end="&quot;" />
+		<Span color="String" begin="&apos;" end="&apos;" />
+		<Keywords color="Keyword">
+			<Word>import</Word>
+			<Word>export</Word>
+			<Word>default</Word>
+			<Word>return</Word>
+			<Word>const</Word>
+			<Word>let</Word>
+			<Word>var</Word>
+			<Word>if</Word>
+			<Word>else</Word>
+			<Word>for</Word>
+			<Word>while</Word>
+			<Word>function</Word>
+			<Word>async</Word>
+			<Word>await</Word>
+			<Word>new</Word>
+			<Word>this</Word>
+			<Word>true</Word>
+			<Word>false</Word>
+			<Word>null</Word>
+			<Word>undefined</Word>
+			<Word>each</Word>
+			<Word>if</Word>
+			<Word>else</Word>
+			<Word>await</Word>
+			<Word>then</Word>
+			<Word>catch</Word>
+		</Keywords>
+	</RuleSet>
+
+	<RuleSet name="CSS">
+		<Span color="Comment" begin="/\*" end="\*/" />
+		<Span color="String" begin="&quot;" end="&quot;" />
+		<Span color="String" begin="&apos;" end="&apos;" />
+	</RuleSet>
+
+	<RuleSet name="MainRuleSet">
+		<Import ruleSet="Html" />
+		<Import ruleSet="JavaScript" />
+		<Import ruleSet="CSS" />
+	</RuleSet>
+
+	<RuleSet>
+		<Import ruleSet="MainRuleSet" />
+	</RuleSet>
+</SyntaxDefinition>

QuickLook.Plugin/QuickLook.Plugin.TextViewer/Syntax/Light/Svelte.xshd

@@ -0,0 +1,113 @@
+<?xml version="1.0" encoding="utf-8"?>
+<SyntaxDefinition name="Svelte" extensions=".svelte" xmlns="http://icsharpcode.net/sharpdevelop/syntaxdefinition/2008">
+	<Color name="Comment" foreground="#008000" />
+	<Color name="Tag" foreground="#800000" exampleText="div" />
+	<Color name="Attribute" foreground="#0000FF" exampleText="on:click" />
+	<Color name="String" foreground="#A31515" exampleText="&quot;text&quot;" />
+	<Color name="Directive" foreground="#B000B0" exampleText="bind:" />
+	<Color name="Keyword" foreground="#000080" exampleText="import" />
+	<Color name="Script" foreground="#333333" />
+	<Color name="Style" foreground="#0055A5" />
+
+	<RuleSet name="Html">
+		<Span color="Comment" begin="&lt;!--" end="--&gt;" />
+		<Span color="String" begin="&quot;" end="&quot;" />
+		<Span color="String" begin="&apos;" end="&apos;" />
+
+		<!-- Tags -->
+		<Span color="Tag" begin="&lt;" end="&gt;">
+			<RuleSet>
+				<Keywords color="Tag">
+					<Word>script</Word>
+					<Word>style</Word>
+					<Word>div</Word>
+					<Word>span</Word>
+					<Word>input</Word>
+					<Word>button</Word>
+					<Word>section</Word>
+					<Word>article</Word>
+					<Word>header</Word>
+					<Word>footer</Word>
+					<Word>main</Word>
+					<Word>nav</Word>
+					<Word>aside</Word>
+					<Word>p</Word>
+					<Word>h1</Word>
+					<Word>h2</Word>
+					<Word>h3</Word>
+					<Word>ul</Word>
+					<Word>li</Word>
+					<Word>a</Word>
+					<Word>img</Word>
+				</Keywords>
+				<Keywords color="Directive">
+					<Word>bind:</Word>
+					<Word>on:</Word>
+					<Word>use:</Word>
+					<Word>transition:</Word>
+					<Word>in:</Word>
+					<Word>out:</Word>
+					<Word>animate:</Word>
+					<Word>class:</Word>
+					<Word>style:</Word>
+				</Keywords>
+				<Keywords color="Attribute">
+					<Word>export</Word>
+					<Word>let</Word>
+					<Word>const</Word>
+				</Keywords>
+			</RuleSet>
+		</Span>
+	</RuleSet>
+
+	<RuleSet name="JavaScript">
+		<Span color="Comment" begin="//" end="\n" />
+		<Span color="Comment" begin="/\*" end="\*/" />
+		<Span color="String" begin="&quot;" end="&quot;" />
+		<Span color="String" begin="&apos;" end="&apos;" />
+		<Keywords color="Keyword">
+			<Word>import</Word>
+			<Word>export</Word>
+			<Word>default</Word>
+			<Word>return</Word>
+			<Word>const</Word>
+			<Word>let</Word>
+			<Word>var</Word>
+			<Word>if</Word>
+			<Word>else</Word>
+			<Word>for</Word>
+			<Word>while</Word>
+			<Word>function</Word>
+			<Word>async</Word>
+			<Word>await</Word>
+			<Word>new</Word>
+			<Word>this</Word>
+			<Word>true</Word>
+			<Word>false</Word>
+			<Word>null</Word>
+			<Word>undefined</Word>
+			<Word>each</Word>
+			<Word>if</Word>
+			<Word>else</Word>
+			<Word>await</Word>
+			<Word>then</Word>
+			<Word>catch</Word>
+		</Keywords>
+	</RuleSet>
+
+	<RuleSet name="CSS">
+		<Span color="Comment" begin="/\*" end="\*/" />
+		<Span color="String" begin="&quot;" end="&quot;" />
+		<Span color="String" begin="&apos;" end="&apos;" />
+	</RuleSet>
+
+	<RuleSet name="MainRuleSet">
+		<Import ruleSet="Html" />
+		<Import ruleSet="JavaScript" />
+		<Import ruleSet="CSS" />
+	</RuleSet>
+
+	<RuleSet>
+		<Import ruleSet="MainRuleSet" />
+	</RuleSet>
+</SyntaxDefinition>

QuickLook.Plugin/QuickLook.Plugin.TextViewer/TextViewerPanel.cs

@@ -17,6 +17,7 @@
 
 using ICSharpCode.AvalonEdit;
 using ICSharpCode.AvalonEdit.Document;
+using ICSharpCode.AvalonEdit.Editing;
 using ICSharpCode.AvalonEdit.Rendering;
 using ICSharpCode.AvalonEdit.Search;
 using QuickLook.Common.Helpers;
@@ -27,6 +28,7 @@ using QuickLook.Plugin.TextViewer.Themes.HighlightingDefinitions;
 using System;
 using System.Globalization;
 using System.IO;
+using System.Linq;
 using System.Reflection;
 using System.Threading.Tasks;
 using System.Windows;
@@ -68,16 +70,33 @@ public partial class TextViewerPanel : TextEditor, IDisposable
         ShowLineNumbers = true;
         WordWrap = true;
         IsReadOnly = true;
+
+        // Enable manipulation events (touch gestures like pan/scroll).
         IsManipulationEnabled = true;
+
+        // Disable automatic hyperlink detection for email addresses.
         Options.EnableEmailHyperlinks = false;
+
+        // Disable automatic hyperlink detection for general URLs.
         Options.EnableHyperlinks = false;
 
+        // Search for the separator line inside the left margins of the TextArea.
+        // The default LineNumberMargin in AvalonEdit often contains a thin Line element
+        // used as a visual separator between line numbers and the text.
+        // If found, set its Stroke to Transparent to hide the separator visually.
+        TextArea.LeftMargins
+            .OfType<System.Windows.Shapes.Line>()
+            .FirstOrDefault()
+            ?.Stroke = Brushes.Transparent;
+
         ContextMenu = new ContextMenu();
+        // Add "Copy" menu item.
         ContextMenu.Items.Add(new MenuItem
         {
             Header = TranslationHelper.Get("Editor_Copy", domain: Assembly.GetExecutingAssembly().GetName().Name),
             Command = ApplicationCommands.Copy
         });
+        // Add "Select All" menu item.
         ContextMenu.Items.Add(new MenuItem
         {
             Header = TranslationHelper.Get("Editor_SelectAll",
@@ -95,8 +114,10 @@ public partial class TextViewerPanel : TextEditor, IDisposable
         FontFamily = new FontFamily(TranslationHelper.Get("Editor_FontFamily",
             domain: Assembly.GetExecutingAssembly().GetName().Name));
 
+        // Add a custom element generator (e.g., to truncate extremely long lines).
         TextArea.TextView.ElementGenerators.Add(new TruncateLongLines());
 
+        // Install the search panel (Ctrl+F style search UI).
         SearchPanel.Install(this);
     }
 

QuickLook.Plugin/QuickLook.Plugin.VideoViewer/ViewerPanel.xaml.cs

@@ -351,7 +351,7 @@ public partial class ViewerPanel : UserControl, IDisposable, INotifyPropertyChan
 
     private void ChangeVolume(double delta)
     {
-        LinearVolume += delta;
+        LinearVolume = Math.Max(0d, Math.Min(1d, LinearVolume + delta));
     }
 
     private void TogglePlayPause(object sender, EventArgs e)
@@ -385,16 +385,16 @@ public partial class ViewerPanel : UserControl, IDisposable, INotifyPropertyChan
         UpdateMeta(path, info);
 
         // detect rotation
-        double.TryParse(info?.Get(StreamKind.Video, 0, "Rotation"), out var rotation);
+        _ = double.TryParse(info?.Get(StreamKind.Video, 0, "Rotation"), out var rotation);
         // Correct rotation: on some machine the value "90" becomes "90000" by some reason
-        if (rotation > 360)
+        if (rotation > 360d)
             rotation /= 1e3;
-        if (Math.Abs(rotation) > 0.1)
+        if (Math.Abs(rotation) > 0.1d)
-            mediaElement.LayoutTransform = new RotateTransform(rotation, 0.5, 0.5);
+            mediaElement.LayoutTransform = new RotateTransform(rotation, 0.5d, 0.5d);
 
         mediaElement.Source = new Uri(path);
         // old plugin use an int-typed "Volume" config key ranged from 0 to 100. Let's use a new one here.
-        LinearVolume = SettingHelper.Get("VolumeDouble", 1d, "QuickLook.Plugin.VideoViewer");
+        LinearVolume = Math.Max(0d, Math.Min(1d, SettingHelper.Get("VolumeDouble", 1d, "QuickLook.Plugin.VideoViewer")));
 
         mediaElement.Play();
     }

QuickLook.sln

@@ -89,6 +89,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "QuickLook.Plugin.HelixViewe
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "QuickLook.Plugin.MediaInfoViewer", "QuickLook.Plugin\QuickLook.Plugin.MediaInfoViewer\QuickLook.Plugin.MediaInfoViewer.csproj", "{B0054A16-472E-44AC-BA40-349303E524FF}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "QuickLook.Plugin.InsvBlocker", "QuickLook.Plugin\QuickLook.Plugin.InsvBlocker\QuickLook.Plugin.InsvBlocker.csproj", "{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -289,6 +291,14 @@ Global
 		{B0054A16-472E-44AC-BA40-349303E524FF}.Release|Any CPU.Build.0 = Release|Any CPU
 		{B0054A16-472E-44AC-BA40-349303E524FF}.Release|x64.ActiveCfg = Release|Any CPU
 		{B0054A16-472E-44AC-BA40-349303E524FF}.Release|x64.Build.0 = Release|Any CPU
+		{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D}.Debug|x64.Build.0 = Debug|Any CPU
+		{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D}.Release|Any CPU.Build.0 = Release|Any CPU
+		{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D}.Release|x64.ActiveCfg = Release|Any CPU
+		{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D}.Release|x64.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -315,6 +325,7 @@ Global
 		{B4F7C88D-C79D-49E7-A1FB-FB69CF72585F} = {06EFDBE0-6408-4B37-BCF2-0CF9EBEA2E93}
 		{311E6E78-3A5B-4E51-802A-5755BD5F9F97} = {06EFDBE0-6408-4B37-BCF2-0CF9EBEA2E93}
 		{B0054A16-472E-44AC-BA40-349303E524FF} = {06EFDBE0-6408-4B37-BCF2-0CF9EBEA2E93}
+		{A1B2C3D4-E5F6-4A5B-9C8D-7E6F5A4B3C2D} = {06EFDBE0-6408-4B37-BCF2-0CF9EBEA2E93}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {D3761C32-8C5F-498A-892B-3B0882994B62}

QuickLook/App.xaml.cs

@@ -259,6 +259,9 @@ public partial class App : Application
 
     private void CheckUpdate()
     {
+        if (SettingHelper.Get("DisableAutoUpdateCheck", false))
+            return;
+
         if (DateTime.Now.Ticks - SettingHelper.Get<long>("LastUpdateTicks") < TimeSpan.FromDays(30).Ticks)
             return;
 

QuickLook/Helpers/ExtensionFilterHelper.cs

@@ -0,0 +1,198 @@
+// Copyright © 2017-2025 QL-Win Contributors
+//
+// This file is part of QuickLook program.
+//
+// This program is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+using QuickLook.Common.Helpers;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+
+namespace QuickLook.Helpers;
+
+/// <summary>
+/// Helper class for managing file extension allowlist/blocklist filtering.
+/// <para>
+/// <b>Blocklist mode (default):</b> All extensions are allowed except those in the blocklist.
+/// If the blocklist is empty, all files are allowed.
+/// </para>
+/// <para>
+/// <b>Allowlist mode:</b> Only extensions in the allowlist can be previewed.
+/// If the allowlist is empty in allowlist mode, all files are allowed (no filtering).
+/// </para>
+/// <para>
+/// Directories and files without extensions are always allowed regardless of the mode.
+/// </para>
+/// </summary>
+public static class ExtensionFilterHelper
+{
+    private const string AllowlistKey = "ExtensionAllowlist";
+    private const string BlocklistKey = "ExtensionBlocklist";
+    private const string UseAllowlistModeKey = "UseExtensionAllowlistMode";
+    private static readonly char[] ExtensionSeparators = [';', ','];
+
+    private static HashSet<string> _allowlistCache;
+    private static HashSet<string> _blocklistCache;
+    private static bool? _useAllowlistModeCache;
+
+    /// <summary>
+    /// Gets or sets whether to use allowlist mode.
+    /// When true, only extensions in the allowlist can be previewed.
+    /// When false (default), extensions in the blocklist are blocked from preview.
+    /// </summary>
+    public static bool UseAllowlistMode
+    {
+        get
+        {
+            _useAllowlistModeCache ??= SettingHelper.Get(UseAllowlistModeKey, false);
+            return _useAllowlistModeCache.Value;
+        }
+        set
+        {
+            _useAllowlistModeCache = value;
+            SettingHelper.Set(UseAllowlistModeKey, value);
+        }
+    }
+
+    /// <summary>
+    /// Gets the current allowlist of file extensions.
+    /// Extensions should be in the format ".ext" (with leading dot).
+    /// </summary>
+    public static HashSet<string> Allowlist
+    {
+        get
+        {
+            if (_allowlistCache == null)
+            {
+                var list = SettingHelper.Get(AllowlistKey, string.Empty);
+                _allowlistCache = ParseExtensionList(list);
+            }
+            return _allowlistCache;
+        }
+    }
+
+    /// <summary>
+    /// Gets the current blocklist of file extensions.
+    /// Extensions should be in the format ".ext" (with leading dot).
+    /// </summary>
+    public static HashSet<string> Blocklist
+    {
+        get
+        {
+            if (_blocklistCache == null)
+            {
+                var list = SettingHelper.Get(BlocklistKey, string.Empty);
+                _blocklistCache = ParseExtensionList(list);
+            }
+            return _blocklistCache;
+        }
+    }
+
+    /// <summary>
+    /// Sets the allowlist of file extensions.
+    /// </summary>
+    /// <param name="extensions">Collection of extensions in the format ".ext" (with leading dot).</param>
+    public static void SetAllowlist(IEnumerable<string> extensions)
+    {
+        var normalized = NormalizeExtensions(extensions);
+        _allowlistCache = normalized;
+        SettingHelper.Set(AllowlistKey, string.Join(";", normalized));
+    }
+
+    /// <summary>
+    /// Sets the blocklist of file extensions.
+    /// </summary>
+    /// <param name="extensions">Collection of extensions in the format ".ext" (with leading dot).</param>
+    public static void SetBlocklist(IEnumerable<string> extensions)
+    {
+        var normalized = NormalizeExtensions(extensions);
+        _blocklistCache = normalized;
+        SettingHelper.Set(BlocklistKey, string.Join(";", normalized));
+    }
+
+    /// <summary>
+    /// Checks if a file path is allowed for preview based on the current filter settings.
+    /// </summary>
+    /// <param name="path">The file path to check.</param>
+    /// <returns>True if the file is allowed for preview, false if it should be blocked.</returns>
+    public static bool IsExtensionAllowed(string path)
+    {
+        if (string.IsNullOrEmpty(path))
+            return true;
+
+        var extension = Path.GetExtension(path);
+        
+        // Files without extensions are always allowed (includes directories)
+        if (string.IsNullOrEmpty(extension))
+            return true;
+
+        extension = extension.ToLowerInvariant();
+
+        if (UseAllowlistMode)
+        {
+            // In allowlist mode: only allow if extension is in the allowlist
+            // If allowlist is empty, allow all (no filtering)
+            return Allowlist.Count == 0 || Allowlist.Contains(extension);
+        }
+        else
+        {
+            // In blocklist mode: block if extension is in the blocklist
+            return !Blocklist.Contains(extension);
+        }
+    }
+
+    /// <summary>
+    /// Clears the cached settings, forcing a reload from the config file.
+    /// </summary>
+    public static void ClearCache()
+    {
+        _allowlistCache = null;
+        _blocklistCache = null;
+        _useAllowlistModeCache = null;
+    }
+
+    private static HashSet<string> ParseExtensionList(string list)
+    {
+        if (string.IsNullOrWhiteSpace(list))
+            return new HashSet<string>(StringComparer.OrdinalIgnoreCase);
+
+        return new HashSet<string>(
+            list.Split(ExtensionSeparators, StringSplitOptions.RemoveEmptyEntries)
+                .Select(NormalizeExtension)
+                .Where(e => !string.IsNullOrEmpty(e)),
+            StringComparer.OrdinalIgnoreCase);
+    }
+
+    private static HashSet<string> NormalizeExtensions(IEnumerable<string> extensions)
+    {
+        return new HashSet<string>(
+            extensions.Select(NormalizeExtension).Where(e => !string.IsNullOrEmpty(e)),
+            StringComparer.OrdinalIgnoreCase);
+    }
+
+    private static string NormalizeExtension(string ext)
+    {
+        if (string.IsNullOrWhiteSpace(ext))
+            return null;
+
+        ext = ext.Trim().ToLowerInvariant();
+        if (!ext.StartsWith("."))
+            ext = "." + ext;
+
+        return ext;
+    }
+}
+

QuickLook/QuickLook.csproj

@@ -105,7 +105,7 @@
         <PackageReference Include="WPF-UI.Violeta" Version="4.0.3.6">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
-        <PackageReference Include="Lib.Harmony" Version="2.4.1">
+        <PackageReference Include="Lib.Harmony" Version="2.4.2">
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>
         <PackageReference Include="UnblockZoneIdentifier" Version="1.0.0">

QuickLook/Translations.config

@@ -11,6 +11,7 @@
     <MW_Open>افتح الملف {0} باستخدام البرنامج الافتراضي</MW_Open>
     <MW_OpenWith>افتح الملف {0} باستخدام برنامج محدد</MW_OpenWith>
     <MW_Run>شغل الملف {0} المحدد</MW_Run>
+    <MW_FileBlocked>هذا النوع من الملفات محظور.</MW_FileBlocked>
     <Icon_RunAtStartup>شغل البرنامج أوتوماتيكيًا عند تشغيل النظام</Icon_RunAtStartup>
     <Icon_ToolTip>النسخة {0} من كويك لووك</Icon_ToolTip>
     <Icon_CheckUpdate>تأكد من وجود أي تحديث للبرنامج</Icon_CheckUpdate>
@@ -40,6 +41,7 @@
     <MW_Open>Megnyitás {0}</MW_Open>
     <MW_OpenWith>Megnyitás ezzel {0}</MW_OpenWith>
     <MW_Run>Futtatás {0}</MW_Run>
+    <MW_FileBlocked>Ez a fájltípus blokkolva van.</MW_FileBlocked>
     <Icon_RunAtStartup>Futattás &amp;Indításkor</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>Keressen új &amp;Frissítést...</Icon_CheckUpdate>
@@ -69,6 +71,7 @@
     <MW_Open>Otvoriť {0}</MW_Open>
     <MW_OpenWith>Otvoriť v programe {0}</MW_OpenWith>
     <MW_Run>Spustiť {0}</MW_Run>
+    <MW_FileBlocked>Tento typ súboru je blokovaný.</MW_FileBlocked>
     <Icon_RunAtStartup>Spustiť pri &amp;štarte</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>Skontrolovať &amp;aktualizácie...</Icon_CheckUpdate>
@@ -97,6 +100,7 @@
     <MW_Open>Buka {0}</MW_Open>
     <MW_OpenWith>Buka dengan {0}</MW_OpenWith>
     <MW_Run>Jalankan {0}</MW_Run>
+    <MW_FileBlocked>Jenis file ini diblokir.</MW_FileBlocked>
     <Icon_RunAtStartup>Jalankan saat &amp;Memulai</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v. {0}</Icon_ToolTip>
     <Icon_CheckUpdate>Memeriksa &amp;Pembaharuan...</Icon_CheckUpdate>
@@ -130,6 +134,7 @@
     <MW_Open>{0} 열기</MW_Open>
     <MW_OpenWith>{0}(으)로 열기</MW_OpenWith>
     <MW_Run>{0} 실행</MW_Run>
+    <MW_FileBlocked>이 파일 유형은 차단되었습니다.</MW_FileBlocked>
     <MW_Share>공유</MW_Share>
     <Icon_RunAtStartup>시작 시 실행(&amp;S)</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
@@ -160,6 +165,7 @@
     <MW_Open>Obre {0}</MW_Open>
     <MW_OpenWith>Obre'l amb {0}</MW_OpenWith>
     <MW_Run>Executa'l {0}</MW_Run>
+    <MW_FileBlocked>Aquest tipus de fitxer està bloquejat.</MW_FileBlocked>
     <Icon_RunAtStartup>Executa'l a l'&amp;inici</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>Cerca &amp;actualitzacions...</Icon_CheckUpdate>
@@ -192,6 +198,7 @@
     <MW_OpenWith>Öffnen mit {0}</MW_OpenWith>
     <MW_OpenWithMenu>Öffnen mit ...</MW_OpenWithMenu>
     <MW_Run>{0} ausführen</MW_Run>
+    <MW_FileBlocked>Dieser Dateityp ist blockiert.</MW_FileBlocked>
     <MW_Share>Freigeben</MW_Share>
     <MW_Reload>Neu laden</MW_Reload>
     <MW_More>Mehr</MW_More>
@@ -229,6 +236,7 @@
     <MW_OpenWith>Open with {0}</MW_OpenWith>
     <MW_OpenWithMenu>Open With Menu</MW_OpenWithMenu>
     <MW_Run>Run {0}</MW_Run>
+    <MW_FileBlocked>This file type is blocked.</MW_FileBlocked>
     <MW_Share>Share</MW_Share>
     <MW_Reload>Reload</MW_Reload>
     <MW_More>More</MW_More>
@@ -266,6 +274,7 @@
     <MW_OpenWith>Abrir con {0}</MW_OpenWith>
     <MW_OpenWithMenu>Abrir Con Menu</MW_OpenWithMenu>
     <MW_Run>Iniciar {0}</MW_Run>
+    <MW_FileBlocked>Este tipo de archivo está bloqueado.</MW_FileBlocked>
     <MW_Share>Compartir</MW_Share>
     <MW_Reload>Recargar</MW_Reload>
     <MW_More>Más</MW_More>
@@ -299,6 +308,7 @@
     <MW_Open>Ouvrir {0}</MW_Open>
     <MW_OpenWith>Ouvrir avec {0}</MW_OpenWith>
     <MW_Run>Exécuter {0}</MW_Run>
+    <MW_FileBlocked>Ce type de fichier est bloqué.</MW_FileBlocked>
     <MW_Reload>Recharger</MW_Reload>
     <MW_More>Plus</MW_More>
     <Icon_RunAtStartup>Exécuter au &amp;démarrage</Icon_RunAtStartup>
@@ -331,6 +341,7 @@
     <MW_Open>Apri {0}</MW_Open>
     <MW_OpenWith>Apri con {0}</MW_OpenWith>
     <MW_Run>Esegui {0}</MW_Run>
+    <MW_FileBlocked>Questo tipo di file è bloccato.</MW_FileBlocked>
     <MW_Reload>Ricarica</MW_Reload>
     <MW_More>Altro</MW_More>
     <Icon_RunAtStartup>Esegui all'&amp;Avvio</Icon_RunAtStartup>
@@ -365,6 +376,7 @@
     <MW_OpenWith>{0} で開く</MW_OpenWith>
     <MW_OpenWithMenu>メニューから選択して開く</MW_OpenWithMenu>
     <MW_Run>{0} を起動</MW_Run>
+    <MW_FileBlocked>このファイルタイプはブロックされています.</MW_FileBlocked>
     <MW_Share>シェア</MW_Share>
     <MW_Reload>再読み込み</MW_Reload>
     <MW_More>その他</MW_More>
@@ -397,6 +409,7 @@
     <MW_Open>Åpne {0}</MW_Open>
     <MW_OpenWith>Åpne med {0}</MW_OpenWith>
     <MW_Run>Kjør {0}</MW_Run>
+    <MW_FileBlocked>Denne filtypen er blokkert.</MW_FileBlocked>
     <Icon_RunAtStartup>Kjør ved &amp;oppstart</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>Se etter &amp;oppdateringer...</Icon_CheckUpdate>
@@ -424,6 +437,7 @@
     <MW_Open>Open {0}</MW_Open>
     <MW_OpenWith>Openen met {0}</MW_OpenWith>
     <MW_Run>Uitvoeren {0}</MW_Run>
+    <MW_FileBlocked>Dit bestandstype is geblokkeerd.</MW_FileBlocked>
     <Icon_RunAtStartup>Uitvoeren bij &amp;Opstarten</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>Controleren op &amp;Updates...</Icon_CheckUpdate>
@@ -456,6 +470,7 @@
     <MW_OpenWith>Otwórz w {0}</MW_OpenWith>
     <MW_OpenWithMenu>Otwórz za pomocą...</MW_OpenWithMenu>
     <MW_Run>Uruchom {0}</MW_Run>
+    <MW_FileBlocked>Ten typ pliku jest zablokowany.</MW_FileBlocked>
     <MW_Share>Udostępnij</MW_Share>
     <MW_Reload>Przeładuj</MW_Reload>
     <MW_More>Więcej</MW_More>
@@ -493,6 +508,7 @@
     <MW_OpenWith>Abrir com {0}</MW_OpenWith>
     <MW_OpenWithMenu>Menu abrir com</MW_OpenWithMenu>
     <MW_Run>Executar {0}</MW_Run>
+    <MW_FileBlocked>Este tipo de arquivo está bloqueado.</MW_FileBlocked>
     <MW_Share>Compartilhar</MW_Share>
     <MW_Reload>Recarregar</MW_Reload>
     <MW_More>Mais</MW_More>
@@ -525,6 +541,7 @@
     <MW_Open>Abrir {0}</MW_Open>
     <MW_OpenWith>Abrir com {0}</MW_OpenWith>
     <MW_Run>Executar {0}</MW_Run>
+    <MW_FileBlocked>Este tipo de ficheiro está bloqueado.</MW_FileBlocked>
     <Icon_RunAtStartup>Executar no &amp;Arranque</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>Procurar por &amp;Atualizações...</Icon_CheckUpdate>
@@ -553,6 +570,7 @@
     <MW_Open>Открыть {0}</MW_Open>
     <MW_OpenWith>Открыть с помощью {0}</MW_OpenWith>
     <MW_Run>Запустить {0}</MW_Run>
+    <MW_FileBlocked>Этот тип файла заблокирован.</MW_FileBlocked>
     <MW_StayTop>Поверх всех окон</MW_StayTop>
     <MW_PreventClosing>Закрепить</MW_PreventClosing>
     <MW_Share>Поделиться</MW_Share>
@@ -587,6 +605,7 @@
     <MW_Open>Aç: {0}</MW_Open>
     <MW_OpenWith>Birlikte aç: {0}</MW_OpenWith>
     <MW_Run>Çalıştır: {0}</MW_Run>
+    <MW_FileBlocked>Bu dosya türü engellenmiştir.</MW_FileBlocked>
     <Icon_RunAtStartup>B&amp;aşlangıçta çalıştır</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>&amp;Güncellemeleri denetle...</Icon_CheckUpdate>
@@ -620,6 +639,7 @@
     <MW_OpenWith>Відкрити за допомогою {0}</MW_OpenWith>
     <MW_OpenWithMenu>Відкрити за допомогою меню</MW_OpenWithMenu>
     <MW_Run>Запустити {0}</MW_Run>
+    <MW_FileBlocked>Цей тип файлу заблоковано.</MW_FileBlocked>
     <MW_Share>Поширити</MW_Share>
     <MW_Reload>Перезавантажити</MW_Reload>
     <MW_More>Більше</MW_More>
@@ -652,6 +672,7 @@
     <MW_Open>Mở {0}</MW_Open>
     <MW_OpenWith>Mở bằng {0}</MW_OpenWith>
     <MW_Run>Chạy {0}</MW_Run>
+    <MW_FileBlocked>Loại tệp này bị chặn.</MW_FileBlocked>
     <Icon_RunAtStartup>&amp;Khởi động cùng hệ thống</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>&amp;Kiểm tra cập nhật...</Icon_CheckUpdate>
@@ -684,6 +705,7 @@
     <MW_OpenWith>用 {0} 打开</MW_OpenWith>
     <MW_OpenWithMenu>从菜单选择打开</MW_OpenWithMenu>
     <MW_Run>运行 {0}</MW_Run>
+    <MW_FileBlocked>此文件类型已被阻止。</MW_FileBlocked>
     <MW_Share>分享</MW_Share>
     <MW_Reload>重新加载</MW_Reload>
     <MW_More>更多</MW_More>
@@ -721,6 +743,7 @@
     <MW_OpenWith>使用 {0} 開啟</MW_OpenWith>
     <MW_OpenWithMenu>從選單選擇開啟</MW_OpenWithMenu>
     <MW_Run>執行 {0}</MW_Run>
+    <MW_FileBlocked>此檔案類型已被阻止。</MW_FileBlocked>
     <MW_Share>分享</MW_Share>
     <MW_Reload>重新載入</MW_Reload>
     <MW_More>更多</MW_More>
@@ -754,6 +777,7 @@
     <MW_Open>{0} उघडा</MW_Open>
     <MW_OpenWith>{0} च्या सह उघडा</MW_OpenWith>
     <MW_Run>{0} चालवा</MW_Run>
+    <MW_FileBlocked>हा फाइल प्रकार ब्लॉक केला आहे.</MW_FileBlocked>
     <Icon_RunAtStartup>&amp;सुरूवातीस चालवा</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook आवृत्ती v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>&amp;अद्यतनांसाठी तपासा...</Icon_CheckUpdate>
@@ -781,6 +805,7 @@
     <MW_Open>{0} खोलें</MW_Open>
     <MW_OpenWith>{0} के साथ खोलें</MW_OpenWith>
     <MW_Run>{0} चलाएं</MW_Run>
+    <MW_FileBlocked>यह फ़ाइल प्रकार अवरुद्ध है.</MW_FileBlocked>
     <Icon_RunAtStartup>&amp;शुरु होते समय चलाएं</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook आवृत्ती v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>&amp;अद्यतन के लिए जाँच करें...</Icon_CheckUpdate>
@@ -808,6 +833,8 @@
     <MW_BrowseFolder>סייר ב{0}</MW_BrowseFolder>
     <MW_Open>פתח את {0}</MW_Open>
     <MW_OpenWith>פתח בעזרת {0}</MW_OpenWith>
+    <MW_Run>הפעל {0}</MW_Run>
+    <MW_FileBlocked>סוג קובץ זה חסום.</MW_FileBlocked>
     <MW_Run>הרץ {0}</MW_Run>
     <Icon_RunAtStartup>הרץ ב&amp;אתחול</Icon_RunAtStartup>
     <Icon_ToolTip>'תצוגה מהירה' v{0}</Icon_ToolTip>
@@ -837,6 +864,7 @@
     <MW_Open>Άνοιγμα {0}</MW_Open>
     <MW_OpenWith>Άνοιγμα με {0}</MW_OpenWith>
     <MW_Run>Εκτέλεση {0}</MW_Run>
+    <MW_FileBlocked>Αυτός ο τύπος αρχείου είναι αποκλεισμένος.</MW_FileBlocked>
     <Icon_RunAtStartup>Εκτέλεση κατά &amp;την εκκίνηση</Icon_RunAtStartup>
     <Icon_ToolTip>QuickLook v{0}</Icon_ToolTip>
     <Icon_CheckUpdate>Ελεγχος για &amp;ενημερώσεις...</Icon_CheckUpdate>
@@ -868,6 +896,7 @@
     <MW_OpenWith>Öppna med {0}</MW_OpenWith>
     <MW_OpenWithMenu>Öppna med…</MW_OpenWithMenu>
     <MW_Run>Kör {0}</MW_Run>
+    <MW_FileBlocked>Den här filtypen är blockerad.</MW_FileBlocked>
     <MW_Share>Dela</MW_Share>
     <MW_Reload>Ladda om</MW_Reload>
     <Icon_RunAtStartup>Kör vid &amp;start</Icon_RunAtStartup>

QuickLook/ViewWindowManager.cs

@@ -151,10 +151,15 @@ public class ViewWindowManager : IDisposable
         if (_viewerWindow.IsVisible && path == _invokedPath)
             return;
 
-        if (!Directory.Exists(path) && !File.Exists(path))
+        var isDirectory = Directory.Exists(path);
+        if (!isDirectory && !File.Exists(path))
             if (!path.StartsWith("::")) // CLSID
                 return;
 
+        // Check extension filtering before proceeding (skip for directories)
+        if (!isDirectory && !ExtensionFilterHelper.IsExtensionAllowed(path))
+            return;
+
         _invokedPath = path;
 
         RunFocusMonitor();
@@ -172,7 +177,12 @@ public class ViewWindowManager : IDisposable
         if (string.IsNullOrEmpty(path))
             return;
 
-        if (!Directory.Exists(path) && !File.Exists(path))
+        var isDirectory = Directory.Exists(path);
+        if (!isDirectory && !File.Exists(path))
+            return;
+
+        // Check extension filtering before proceeding (skip for directories)
+        if (!isDirectory && !ExtensionFilterHelper.IsExtensionAllowed(path))
             return;
 
         RunFocusMonitor();

QuickLook/ViewerWindow.Actions.cs

@@ -201,6 +201,19 @@ public partial class ViewerWindow
             return;
         }
 
+        if (ContextObject.IsBlocked)
+        {
+            ContextObject.ViewerContent = new System.Windows.Controls.TextBlock
+            {
+                Text = TranslationHelper.Get("MW_FileBlocked", failsafe: "This file type is blocked."),
+                HorizontalAlignment = HorizontalAlignment.Center,
+                VerticalAlignment = VerticalAlignment.Center,
+                FontSize = 14,
+            };
+            ContextObject.IsBusy = false;
+            return;
+        }
+
         SetOpenWithButtonAndPath();
 
         // Revert UI changes

QuickLook/ViewerWindow.xaml.cs

@@ -64,6 +64,8 @@ public partial class ViewerWindow : Window
         Topmost = SettingHelper.Get("Topmost", false);
         buttonTop.Tag = Topmost ? "Top" : "Auto";
 
+        ShowInTaskbar = SettingHelper.Get("ShowInTaskbar", false);
+
         buttonTop.Click += (_, _) =>
         {
             Topmost = !Topmost;