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.
Namespace: Microsoft.VisualStudio.VCProjectEngine
Assembly: Microsoft.VisualStudio.VCProjectEngine (in Microsoft.VisualStudio.VCProjectEngine.dll)
Syntax
'Declaration
Property UndefineAllPreprocessorDefinitions As Boolean
bool UndefineAllPreprocessorDefinitions { get; set; }
property bool UndefineAllPreprocessorDefinitions {
bool get ();
void set (bool value);
}
abstract UndefineAllPreprocessorDefinitions : bool with get, set
function get UndefineAllPreprocessorDefinitions () : boolean
function set UndefineAllPreprocessorDefinitions (value : boolean)
Property Value
Type: System.Boolean
true if previously defined preprocessor values are undefined; otherwise, false.
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
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.