Building a BallonToolTip provider in C#

<VisualStudioProject>
    <CSHARP
        ProjectType = "Local"
        ProductVersion = "7.10.3077"
        SchemaVersion = "2.0"
        ProjectGuid = "{B00BC3B0-0DEC-412A-9FF0-F480ABB9160F}"
    >
        <Build>
            <Settings
                ApplicationIcon = ""
                AssemblyKeyContainerName = ""
                AssemblyName = "ToolTipLibrary"
                AssemblyOriginatorKeyFile = ""
                DefaultClientScript = "JScript"
                DefaultHTMLPageLayout = "Grid"
                DefaultTargetSchema = "IE50"
                DelaySign = "false"
                OutputType = "Library"
                PreBuildEvent = ""
                PostBuildEvent = ""
                RootNamespace = "ToolTipLibrary"
                RunPostBuildEvent = "OnBuildSuccess"
                StartupObject = ""
            >
                <Config
                    Name = "Debug"
                    AllowUnsafeBlocks = "false"
                    BaseAddress = "285212672"
                    CheckForOverflowUnderflow = "false"
                    ConfigurationOverrideFile = ""
                    DefineConstants = "DEBUG;TRACE"
                    DocumentationFile = ""
                    DebugSymbols = "true"
                    FileAlignment = "4096"
                    IncrementalBuild = "false"
                    NoStdLib = "false"
                    NoWarn = ""
                    Optimize = "false"
                    OutputPath = "bin\Debug\"
                    RegisterForComInterop = "false"
                    RemoveIntegerChecks = "false"
                    TreatWarningsAsErrors = "false"
                    WarningLevel = "4"
                />
                <Config
                    Name = "Release"
                    AllowUnsafeBlocks = "false"
                    BaseAddress = "285212672"
                    CheckForOverflowUnderflow = "false"
                    ConfigurationOverrideFile = ""
                    DefineConstants = "TRACE"
                    DocumentationFile = ""
                    DebugSymbols = "false"
                    FileAlignment = "4096"
                    IncrementalBuild = "false"
                    NoStdLib = "false"
                    NoWarn = ""
                    Optimize = "true"
                    OutputPath = "bin\Release\"
                    RegisterForComInterop = "false"
                    RemoveIntegerChecks = "false"
                    TreatWarningsAsErrors = "false"
                    WarningLevel = "4"
                />
            </Settings>
            <References>
                <Reference
                    Name = "System"
                    AssemblyName = "System"
                    HintPath = "..\..\..\..\..\WINDOWS\Microsoft.NET\Framework\v1.1.4322\System.dll"
                />
                <Reference
                    Name = "System.Windows.Forms"
                    AssemblyName = "System.Windows.Forms"
                    HintPath = "..\..\..\..\..\WINDOWS\Microsoft.NET\Framework\v1.1.4322\System.Windows.Forms.dll"
                />
                <Reference
                    Name = "System.Drawing"
                    AssemblyName = "System.Drawing"
                    HintPath = "..\..\..\..\..\WINDOWS\Microsoft.NET\Framework\v1.1.4322\System.Drawing.dll"
                />
            </References>
        </Build>
        <Files>
            <Include>
                <File
                    RelPath = "AssemblyInfo.cs"
                    SubType = "Code"
                    BuildAction = "Compile"
                />
                <File
                    RelPath = "BallonToolTip.cs"
                    SubType = "Component"
                    BuildAction = "Compile"
                />
                <File
                    RelPath = "BallonToolTip.resx"
                    DependentUpon = "BallonToolTip.cs"
                    BuildAction = "EmbeddedResource"
                />
                <File
                    RelPath = "NativeMethods.cs"
                    SubType = "Code"
                    BuildAction = "Compile"
                />
                <File
                    RelPath = "NativeTooltipWindow.cs"
                    SubType = "Code"
                    BuildAction = "Compile"
                />
            </Include>
        </Files>
    </CSHARP>
</VisualStudioProject>