public void ReplaceAdditionalIncludeDir(VCConfiguration cfg, string oldDef, string newDef) { VCCLCompilerTool cl = (VCCLCompilerTool)cfg.Tools.Item("VCCLCompilerTool"); if (cl != null) { cl.AdditionalIncludeDirectories = cl.AdditionalIncludeDirectories.Replace(oldDef, newDef); } }