Return true if chartType is one of Surface subtypes. Subtypes set corresponds to the appropriate set in PowerPoint (see "Change Chart Type" dialog in PowerPoint): ChartType::Surface3D, ChartType::WireframeSurface3D, ChartType::Contour, ChartType::WireframeContour....Aspose::Slides::Charts Library Aspose.Slides IsChartTypeStock() IsChartTypeDoughnut()...