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VCCLCompilerTool.UndefineAllPreprocessorDefinitions Property

  • Reference

Definition

Namespace:
Microsoft.VisualStudio.VCProjectEngine
Assembly:
Microsoft.VisualStudio.VCProjectEngine.dll
Package:
Microsoft.VisualStudio.VCProjectEngine v17.11.40252

Gets or sets a value indicating whether to undefine all previously defined preprocessor values. UndefineAllPreprocessorDefinitions exposes the functionality of the compiler's /U, /u (Undefine Symbols) option.

public:
 property bool UndefineAllPreprocessorDefinitions { bool get(); void set(bool value); };
public:
 property bool UndefineAllPreprocessorDefinitions { bool get(); void set(bool value); };
[System.Runtime.InteropServices.DispId(88)]
public bool UndefineAllPreprocessorDefinitions { [System.Runtime.InteropServices.DispId(88)] get; [System.Runtime.InteropServices.DispId(88)] set; }
[<System.Runtime.InteropServices.DispId(88)>]
[<get: System.Runtime.InteropServices.DispId(88)>]
[<set: System.Runtime.InteropServices.DispId(88)>]
member this.UndefineAllPreprocessorDefinitions : bool with get, set
Public Property UndefineAllPreprocessorDefinitions As Boolean

Property Value

Boolean

true if previously defined preprocessor values are undefined; otherwise, false.

Attributes
DispIdAttribute

Examples

See How to: Compile Example Code for Project Model Extensibility for information about how to compile and run this example.

The following example modifies the UndefineAllPreprocessorDefinitions 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 VCCLCompilerTool  
        prj = DTE.Solution.Projects.Item(1).Object  
        cfgs = prj.Configurations  
        cfg = cfgs.Item(1)  
        tool = cfg.Tools("VCCLCompilerTool")  
        tool.UndefineAllPreprocessorDefinitions = True  
    End Sub  
End Module

Applies to