Schlagwort: GUI_IS_AVAILABLE

DATA: lv_gui_is_active TYPE abap_bool.

* Checks if there is a GUI
CALL FUNCTION 'GUI_IS_AVAILABLE'
  IMPORTING
    return = lv_gui_is_active.

WRITE: 'GUI is active:', COND #( WHEN lv_gui_is_active = abap_true THEN 'yes' ELSE 'no' ).