// Read the input Project file
System::SharedPtr<Project> project = System::MakeObject<Project>(dataDir + u"CreateProject2.mpp");
    
System::SharedPtr<XlsxOptions> options = System::MakeObject<XlsxOptions>();
    
// Add desired Gantt Chart columns
System::SharedPtr<GanttChartColumn> col = System::MakeObject<GanttChartColumn>(u"WBS", 100, &UsingXlsxOptions::_anonymous_method_0);
options->get_View()->get_Columns()->Add(col);
    
// Add desired resource view columns
System::SharedPtr<ResourceViewColumn> rscCol = System::MakeObject<ResourceViewColumn>(u"Cost center", 100, &UsingXlsxOptions::_anonymous_method_1);
options->get_ResourceView()->get_Columns()->Add(rscCol);
    
// Add desired assignment view columns
System::SharedPtr<AssignmentViewColumn> assnCol = System::MakeObject<AssignmentViewColumn>(u"Notes", 200, &UsingXlsxOptions::_anonymous_method_2);
options->get_AssignmentView()->get_Columns()->Add(assnCol);
    
project->Save(dataDir + u"UsingXlsxOptions_out.xlsx", options);