TestDragWindow.csproj

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>net7.0-windows</TargetFramework>
    <Nullable>enable</Nullable>
    <UseWPF>true</UseWPF>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="Vanara.PInvoke.User32" Version="3.4.8" />
    <PackageReference Include="WpfScreenHelper" Version="2.1.0" />
  </ItemGroup>

</Project>