Monitoring desktop windows from a Windows service

<Project DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
  <PropertyGroup>
    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
    <ProductVersion>8.0.50727</ProductVersion>
    <SchemaVersion>2.0</SchemaVersion>
    <ProjectGuid>{ED5F5A67-DD48-451D-96C7-6C6D8ECE5200}</ProjectGuid>
    <OutputType>WinExe</OutputType>
    <AppDesignerFolder>Properties</AppDesignerFolder>
    <RootNamespace>ScreenmonitorService</RootNamespace>
    <AssemblyName>ScreenmonitorService</AssemblyName>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DebugSymbols>true</DebugSymbols>
    <DebugType>full</DebugType>
    <Optimize>false</Optimize>
    <OutputPath>..\Debug\</OutputPath>
    <DefineConstants>DEBUG;TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <UseVSHostingProcess>false</UseVSHostingProcess>
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    <DebugType>pdbonly</DebugType>
    <Optimize>true</Optimize>
    <OutputPath>..\Release\</OutputPath>
    <DefineConstants>TRACE</DefineConstants>
    <ErrorReport>prompt</ErrorReport>
    <WarningLevel>4</WarningLevel>
    <UseVSHostingProcess>false</UseVSHostingProcess>
  </PropertyGroup>
  <ItemGroup>
    <Reference Include="System" />
    <Reference Include="System.configuration" />
    <Reference Include="System.Configuration.Install" />
    <Reference Include="System.Data" />
    <Reference Include="System.Management" />
    <Reference Include="System.ServiceProcess" />
    <Reference Include="System.Xml" />
  </ItemGroup>
  <ItemGroup>
    <Compile Include="..\ScreenMonitorLib\Properties\common.cs">
      <Link>common.cs</Link>
    </Compile>
    <Compile Include="ProjectInstaller.cs">
      <SubType>Component</SubType>
    </Compile>
    <Compile Include="ProjectInstaller.Designer.cs">
      <DependentUpon>ProjectInstaller.cs</DependentUpon>
    </Compile>
    <Compile Include="Screenmonitor.cs">
      <SubType>Component</SubType>
    </Compile>
    <Compile Include="Screenmonitor.Designer.cs">
      <DependentUpon>Screenmonitor.cs</DependentUpon>
    </Compile>
    <Compile Include="Program.cs" />
    <Compile Include="Properties\AssemblyInfo.cs" />
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    <EmbeddedResource Include="ProjectInstaller.resx">
      <SubType>Designer</SubType>
      <DependentUpon>ProjectInstaller.cs</DependentUpon>
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    <EmbeddedResource Include="Screenmonitor.resx">
      <SubType>Designer</SubType>
      <DependentUpon>Screenmonitor.cs</DependentUpon>
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    <None Include="App.config" />
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  <ItemGroup>
    <ProjectReference Include="..\ScreenMonitorLib\ScreenMonitorLib.csproj">
      <Project>{AF3644B7-CAC2-4BDF-9DEC-9AD459D3904F}</Project>
      <Name>ScreenMonitorLib</Name>
    </ProjectReference>
  </ItemGroup>
  <Import Project="$(MSBuildBinPath)\Microsoft.CSharp.targets" />
  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
       Other similar extension points exist, see Microsoft.Common.targets.
  <Target Name="BeforeBuild">
  </Target>
  <Target Name="AfterBuild">
  </Target>
  -->
  <PropertyGroup>
    <PreBuildEvent>rem net stop "Screen Monitor"
rem  if %25errorlevel%25 neq 0 dir
rem set DOTNETFX2=%25SystemRoot%25\Microsoft.NET\Framework\v2.0.50727
rem  set PATH=%25PATH%25;%25DOTNETFX2%25
rem InstallUtil /u $(TargetFileName)</PreBuildEvent>
    <PostBuildEvent>rem set DOTNETFX2=%25SystemRoot%25\Microsoft.NET\Framework\v2.0.50727
rem set PATH=%25PATH%25;%25DOTNETFX2%25
rem InstallUtil /i $(TargetFileName)</PostBuildEvent>
  </PropertyGroup>
</Project>