EnablePREfast Property
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VCCLCompilerTool.EnablePREfast Property

Gets or sets whether Native Code Analysis is enabled.

Namespace:  Microsoft.VisualStudio.VCProjectEngine
Assembly:  Microsoft.VisualStudio.VCProjectEngine (in Microsoft.VisualStudio.VCProjectEngine.dll)

bool EnablePREfast { get; set; }

Property Value

Type: System.Boolean
true to enable code analysis (/analyze).

Additional options can be set using the AdditionalOptions property.

NoteNote:

/analyze is only available in Enterprise (Team Developer) versions for x86 compilers.

The following example demonstrates how to use the EnablePREfast and AdditionalOptions properties to set the /analyze:WX- switch. (Both properties are required to do this.) Specifying /analyze:WX- means that code analysis warnings will not be treated as errors when compiling with /WX. For more information, see /analyze (Enterprise Code Analysis).

To run this example, enter and run this example as outlined in How to: Compile and Run the Automation Object Model Code Examples. Then, in the new instance of Visual Studio, load a Visual C++ project and use the Add-in Manager to activate the add-in.

// Add references to Microsoft.VisualStudio.VCProjectEngine and 
// System.Windows.Forms.
using System;
using Extensibility;
using EnvDTE;
using EnvDTE80;
using Microsoft.VisualStudio.VCProjectEngine;
using System.Text;
using System.Windows.Forms;

public void EnablePREfastExample(DTE2 dte)
{
    try
    {
        VCProject prj;
        IVCCollection cfgs, tools;
        VCConfiguration cfg;
        VCCLCompilerTool tool;
        StringBuilder sb = new StringBuilder();

        prj = (Microsoft.VisualStudio.VCProjectEngine.VCProject)
          dte.Solution.Projects.Item(1).Object;
        cfgs = 
          (Microsoft.VisualStudio.VCProjectEngine.IVCCollection)
          prj.Configurations;
        cfg = 
          (Microsoft.VisualStudio.VCProjectEngine.VCConfiguration)
           cfgs.Item(1);
        tools = 
          (Microsoft.VisualStudio.VCProjectEngine.IVCCollection)
          cfg.Tools;
        tool = 
          (Microsoft.VisualStudio.VCProjectEngine.VCCLCompilerTool)
          tools.Item("VCCLCompilerTool");
                                
        sb.Length = 0;
        sb.Append("Current project PREfast setting: " +
          tool.EnablePREfast + Environment.NewLine);
        sb.Append("Flag: " + tool.AdditionalOptions);
        MessageBox.Show(sb.ToString());

        // Toggle PREfast setting.
        if (!(tool.EnablePREfast == true))
        {
            // PREfast is not enabled. Turn it and the WX- flag on.
            tool.EnablePREfast = true;
            tool.AdditionalOptions = "/analyze:WX-";
        }
        else
        {
            // Toggle the opposite.
            tool.EnablePREfast = false;
            tool.AdditionalOptions = "/analyze:WX";
        }
        sb.Length = 0;
        sb.Append("New project PREfast setting: " +
          tool.EnablePREfast + Environment.NewLine);
        sb.Append("Flag: " + tool.AdditionalOptions);
        MessageBox.Show(sb.ToString());
    }
    catch (System.Exception errmsg)
    {
        MessageBox.Show("ERROR! " + errmsg.Message);
    }
}

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