Returns the engine being used to load or save PDF format images.
This is a confirmed value for PDFEngine. If PDFEngine is ieenAuto, ieenDLL will be returned if the PDFium DLL is available, otherwise ieenNative for saving or ieenLegacy for loading.
If no loading method can be found, ieenNone is returned.
IEGlobalSettings().PDFEngine := ieenAuto; if IEGlobalSettings().ActivePDFEngine = ieenNative then ShowMessage('Native loading is being used saving PDF');