add DriveKeepAlive

this also converts the solution to VS2012

DriveKeepAlive/App.xaml

@@ -0,0 +1,8 @@
+<Application x:Class="DriveKeepAlive.App"
+             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+             StartupUri="MainWindow.xaml">
+    <Application.Resources>
+
+    </Application.Resources>
+</Application>

DriveKeepAlive/App.xaml.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Data;
+using System.Linq;
+using System.Windows;
+
+namespace DriveKeepAlive
+{
+    /// <summary>
+    /// Interaction logic for App.xaml
+    /// </summary>
+    public partial class App : Application
+    {
+    }
+}

DriveKeepAlive/AppSettings.settings

@@ -0,0 +1,21 @@
+<?xml version='1.0' encoding='utf-8'?>
+<SettingsFile xmlns="http://schemas.microsoft.com/VisualStudio/2004/01/settings" CurrentProfile="(Default)" GeneratedClassNamespace="KeepDriveBusy" GeneratedClassName="AppSettings">
+  <Profiles />
+  <Settings>
+    <Setting Name="FileDirectory" Type="System.String" Scope="User">
+      <Value Profile="(Default)">D:\</Value>
+    </Setting>
+    <Setting Name="FileName" Type="System.String" Scope="Application">
+      <Value Profile="(Default)">keep-busy.txt</Value>
+    </Setting>
+    <Setting Name="WriteInterval" Type="System.Int32" Scope="User">
+      <Value Profile="(Default)">5000</Value>
+    </Setting>
+    <Setting Name="TimeToIdle" Type="System.Int64" Scope="User">
+      <Value Profile="(Default)">30000</Value>
+    </Setting>
+    <Setting Name="MaximumFileSize" Type="System.Int64" Scope="Application">
+      <Value Profile="(Default)">4096</Value>
+    </Setting>
+  </Settings>
+</SettingsFile>

DriveKeepAlive/DriveKeepAlive.csproj

@@ -0,0 +1,112 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{82AD4031-F25A-4317-990B-80E8BFA0B5A2}</ProjectGuid>
+    <OutputType>WinExe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>DriveKeepAlive</RootNamespace>
+    <AssemblyName>DriveKeepAlive</AssemblyName>
+    <TargetFrameworkVersion>v4.0</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{60dc8134-eba5-43b8-bcc9-bb4bc16c2548};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.Xaml">
+      <RequiredTargetFramework>4.0</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="WindowsBase" />
+    <Reference Include="PresentationCore" />
+    <Reference Include="PresentationFramework" />
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+    <Compile Include="AppSettings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+      <DependentUpon>AppSettings.settings</DependentUpon>
+    </Compile>
+    <Compile Include="Win32\Win32.cs" />
+    <Page Include="MainWindow.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+    <Compile Include="App.xaml.cs">
+      <DependentUpon>App.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="MainWindow.xaml.cs">
+      <DependentUpon>MainWindow.xaml</DependentUpon>
+      <SubType>Code</SubType>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Properties\AssemblyInfo.cs">
+      <SubType>Code</SubType>
+    </Compile>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+    </EmbeddedResource>
+    <None Include="app.config" />
+    <None Include="AppSettings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>AppSettings.Designer.cs</LastGenOutput>
+    </None>
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+    <AppDesigner Include="Properties\" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\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>
+  -->
+</Project>

DriveKeepAlive/MainWindow.xaml

@@ -0,0 +1,9 @@
+<Window x:Class="DriveKeepAlive.MainWindow"
+        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+        Title="Drive Keep-alive" Height="115.672" Width="525" Closed="Window_Closed_1" ResizeMode="CanMinimize">
+    <Grid>
+        <TextBlock x:Name="StatusText" Margin="10" TextWrapping="Wrap" Text="Text" FontSize="22" HorizontalAlignment="Center" VerticalAlignment="Center"/>
+
+    </Grid>
+</Window>

DriveKeepAlive/MainWindow.xaml.cs

@@ -0,0 +1,85 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading;
+using System.Windows;
+using System.Windows.Controls;
+using System.Windows.Data;
+using System.Windows.Documents;
+using System.Windows.Input;
+using System.Windows.Media;
+using System.Windows.Media.Imaging;
+using System.Windows.Navigation;
+using DriveKeepAlive.Win32;
+
+namespace DriveKeepAlive
+{
+    /// <summary>
+    /// Interaction logic for MainWindow.xaml
+    /// </summary>
+    public partial class MainWindow : Window
+    {
+        private Stream FileStream;
+        private AppSettings Config = AppSettings.Default;
+
+        public MainWindow()
+        {
+            InitializeComponent();
+            FileStream = File.OpenWrite(Path.Combine(Config.FileDirectory, Config.FileName));
+            var t = new Thread(() =>
+            {
+                long writeCount = 0;
+                while (true)
+                {
+                    if (IsUserActive())
+                    {
+                        WriteToBusyFile();
+                        UpdateStatusText(++writeCount);
+                    }
+                    Thread.Sleep(Config.WriteInterval);
+                }
+            });
+            t.IsBackground = true;
+            t.Start();
+        }
+
+        private bool IsUserActive()
+        {
+            LastInputInfo info = new LastInputInfo();
+            info.cbSize = LastInputInfo.SizeOf;
+            if (!Win32Bindings.GetLastInputInfo(ref info))
+            {
+                throw new Exception("Could not get time of last user activity");
+            }
+
+            long idleTime = Environment.TickCount - info.dwTime;
+            return idleTime <= Config.TimeToIdle;
+        }
+
+        private void WriteToBusyFile()
+        {
+            if (FileStream.Length >= Config.MaximumFileSize)
+            {
+                FileStream.SetLength(0);
+            }
+            FileStream.WriteByte(0);
+            FileStream.Flush();
+        }
+
+        private void UpdateStatusText(long writeCount)
+        {
+            StatusText.Dispatcher.Invoke(new Action(() =>
+            {
+                StatusText.Text = string.Format("{0} times written", writeCount);
+            }));
+        }
+
+        private void Window_Closed_1(object sender, EventArgs e)
+        {
+            FileStream.Close();
+        }
+    }
+}

DriveKeepAlive/Properties/AssemblyInfo.cs

@@ -0,0 +1,55 @@
+using System.Reflection;
+using System.Resources;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+using System.Windows;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("KeepDriveBusy")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("KeepDriveBusy")]
+[assembly: AssemblyCopyright("Copyright ©  2013")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Setting ComVisible to false makes the types in this assembly not visible 
+// to COM components.  If you need to access a type in this assembly from 
+// COM, set the ComVisible attribute to true on that type.
+[assembly: ComVisible(false)]
+
+//In order to begin building localizable applications, set 
+//<UICulture>CultureYouAreCodingWith</UICulture> in your .csproj file
+//inside a <PropertyGroup>.  For example, if you are using US english
+//in your source files, set the <UICulture> to en-US.  Then uncomment
+//the NeutralResourceLanguage attribute below.  Update the "en-US" in
+//the line below to match the UICulture setting in the project file.
+
+//[assembly: NeutralResourcesLanguage("en-US", UltimateResourceFallbackLocation.Satellite)]
+
+
+[assembly: ThemeInfo(
+    ResourceDictionaryLocation.None, //where theme specific resource dictionaries are located
+    //(used if a resource is not found in the page, 
+    // or application resource dictionaries)
+    ResourceDictionaryLocation.SourceAssembly //where the generic resource dictionary is located
+    //(used if a resource is not found in the page, 
+    // app, or any theme specific resource dictionaries)
+)]
+
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]