Is it possible to display icon on ABAP selection screen?
Is it possible to disable the icons in application toolbar of SAP table maintenance generator?
If you want to display traffic lights in SAP ABAP ALV make use of lights_fieldname field of ALV layout and assign proper traffic light value for each row(i.e. 1 for Red, 2 for Yellow and 3 for Green) in the internal table.
If you want to disable icons in SAP ALV toolbar make use of excluding table of ALV.