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VCMidlTool.CPreprocessOptions Property 

Gets or sets a C-compiler preprocessor option to pass to the MIDL compiler.

Namespace: Microsoft.VisualStudio.VCProjectEngine
Assembly: Microsoft.VisualStudio.VCProjectEngine (in microsoft.visualstudio.vcprojectengine.dll)

string CPreprocessOptions { get; set; }
/** @property */
String get_CPreprocessOptions ()

/** @property */
void set_CPreprocessOptions (/** @attribute InAttribute() */ String Opt)

function get CPreprocessOptions () : String

function set CPreprocessOptions (Opt : String)

Property Value

A C-compiler preprocessor option.

CPreprocessOptions exposes the functionality of the /cpp_opt MIDL option.

See Samples for Project Model Extensibility for information about how to compile and run this example.

The following example modifies the CPreprocessOptions property in the integrated development environment (IDE):

' add reference to Microsoft.VisualStudio.VCProjectEngine
Imports EnvDTE
Imports Microsoft.VisualStudio.VCProjectEngine

Public Module Module1
    Sub Test()
        Dim prj As VCProject
        Dim cfgs, tools As IVCCollection
        Dim cfg As VCConfiguration
        Dim tool As VCMidlTool
        prj = DTE.Solution.Projects.Item(1).Object
        cfgs = prj.Configurations
        cfg = cfgs.Item(1)
        tool = cfg.Tools("VCMIDLTool")
        tool.CPreprocessOptions = "test"
    End Sub
End Module
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