5.4.0-preview.1 Optimize calls to the Windows API

Author: Mertsch

CHANGELOG.md

@@ -3,6 +3,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.1.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [5.4.0] - 2026-01-14
+### Changed
+- Optimize calls to the Windows API by using [C#/Win32 Interop Projection](https://github.com/microsoft/CsWin32).
+
 ## [5.3.0] - 2025-11-21
 ### Changed
 - Re-enabled DPI awareness. Launchbar now looks sharp and natural on high-DPI displays.

Source/Directory.Packages.props

@@ -5,8 +5,9 @@
   </PropertyGroup>
   <ItemGroup>
     <PackageVersion Include="fm.Extensions.Wpf" Version="7.0.0" />
-    <PackageVersion Include="JetBrains.Annotations" Version="2025.2.2" />
+    <PackageVersion Include="JetBrains.Annotations.Sources" Version="2025.2.4" />
     <PackageVersion Include="Markdig.Wpf" Version="0.5.0.1" />
+    <PackageVersion Include="Microsoft.Windows.CsWin32" Version="0.3.264" />
     <PackageVersion Include="WpfScreenHelper" Version="2.1.1" />
   </ItemGroup>
 </Project>

Source/Launchbar/Launchbar.csproj

@@ -3,6 +3,7 @@
     <TargetFramework>net10.0-windows</TargetFramework>
     <UseWPF>true</UseWPF>
     <OutputType>WinExe</OutputType>
+    <PlatformTarget>x64</PlatformTarget>
 
     <IsPublishable>true</IsPublishable>
     <!-- https://learn.microsoft.com/en-us/dotnet/core/project-sdk/msbuild-props#generateassemblyinfo -->
@@ -13,10 +14,23 @@
     <Description>RunIT to the next level.</Description>
   </PropertyGroup>
 
+  <PropertyGroup>
+    <!-- https://microsoft.github.io/CsWin32/docs/getting-started.html#enable-cswin32runasbuildtask -->
+    <CsWin32RunAsBuildTask>true</CsWin32RunAsBuildTask>
+    <DisableRuntimeMarshalling>true</DisableRuntimeMarshalling>
+  </PropertyGroup>
+
   <ItemGroup>
     <PackageReference Include="fm.Extensions.Wpf" />
-    <PackageReference Include="JetBrains.Annotations" />
+    <PackageReference Include="JetBrains.Annotations.Sources">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="Markdig.Wpf" />
+    <PackageReference Include="Microsoft.Windows.CsWin32">
+      <PrivateAssets>all</PrivateAssets>
+      <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
+    </PackageReference>
     <PackageReference Include="WpfScreenHelper" />
   </ItemGroup>
 

Source/Launchbar/NativeMethods.txt

@@ -0,0 +1,7 @@
+GetWindowLongPtrW
+SetWindowLongPtrW
+PickIconDlg
+ExtractIcon
+ExtractAssociatedIcon
+SendInput
+WINDOW_EX_STYLE