隐藏、显示 SELECTION-SCREEN

SELECTION-SCREEN BEGIN OF BLOCK b1 WITH FRAME TITLE t1.
PARAMETERS: download RADIOBUTTON GROUP typ USER-COMMAND sele DEFAULT 'X'.
PARAMETERS: upload RADIOBUTTON GROUP typ.
SELECTION-SCREEN END OF BLOCK b1.

SELECTION-SCREEN BEGIN OF BLOCK b2 WITH FRAME TITLE t2.
PARAMETERS:  p_file(255) TYPE c LOWER CASE MODIF ID m2,
             p_client LIKE tmsbuffer-tarcli MODIF ID m2.
SELECTION-SCREEN END OF BLOCK b2.

SELECTION-SCREEN BEGIN OF BLOCK b3 WITH FRAME TITLE t3.
PARAMETERS:p_reqnum TYPE trkorr MODIF ID m3,
           p_folder LIKE rlgrap-filename DEFAULT 'C:\' LOWER CASE MODIF ID m3.
SELECTION-SCREEN END OF BLOCK b3.

INITIALIZATION.
  t1 = '选择功能'.
  t2 = '上传参数'.
  t3 = '下载参数'.

AT SELECTION-SCREEN OUTPUT.
  LOOP AT SCREEN.
    CASE screen-group1.
      WHEN 'M2'.
        IF download = 'X'.
          screen-active = '0'.
        ELSE.
          screen-active = '1'.
        ENDIF.
      WHEN 'M3'.
        IF download = 'X'.
          screen-active = '1'.
        ELSE.
          screen-active = '0'.
        ENDIF.
    ENDCASE.
    MODIFY SCREEN.
  ENDLOOP.