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VCCLCompilerTool.PreprocessorDefinitions Property

Definition

Namespace:
Microsoft.VisualStudio.VCProjectEngine
Assembly:
Microsoft.VisualStudio.VCProjectEngine.dll
Package:
Microsoft.VisualStudio.VCProjectEngine v17.14.40264

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

Gets or sets one or more preprocessor defines. PreprocessorDefinitions exposes the functionality of the compiler's /D (Preprocessor Definitions) option, the MIDL compiler's MIDL Property Pages: General option, and the Resource Compiler's Resources Property Pages option.

public:
 property System::String ^ PreprocessorDefinitions { System::String ^ get(); void set(System::String ^ value); };
public:
 property Platform::String ^ PreprocessorDefinitions { Platform::String ^ get(); void set(Platform::String ^ value); };
[System.Runtime.InteropServices.DispId(60)]
public string PreprocessorDefinitions { [System.Runtime.InteropServices.DispId(60)] get; [System.Runtime.InteropServices.DispId(60)] set; }
[<System.Runtime.InteropServices.DispId(60)>]
[<get: System.Runtime.InteropServices.DispId(60)>]
[<set: System.Runtime.InteropServices.DispId(60)>]
member this.PreprocessorDefinitions : string with get, set
Public Property PreprocessorDefinitions As String

Property Value

One or more preprocessor defines.

Attributes

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 compiler's PreprocessorDefinitions 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 
 Dim oldDefs As String 
 prj = DTE.Solution.Projects.Item(1).Object 
 cfgs = prj.Configurations 
 cfg = cfgs.Item(1) 
 tool = cfg.Tools("VCCLCompilerTool") 
 oldDefs = tool.PreprocessorDefinitions 
 tool.PreprocessorDefinitions = "_TEST;" + oldDefs 
 MsgBox(tool.PreprocessorDefinitions) 
 End Sub 
End Module

Applies to