https://docs.tatukgis.com/DK11/api:dk11:delphi:fmx.gisviewerwnd.tgis_viewerwnd.helpevent
TGIS_ViewerWnd.HelpEvent event [TatukGIS Developer Kernel]
DK for Delphi - event FMX.GisViewerWnd.TGIS_ViewerWnd.HelpEvent - Help event.
tgiseventtatukgisdeveloperkernel