以下是一个演示如何通过 selection-screen 中的pushbutton来动态改变屏幕上的字段的显示状态的（即显示或者隐藏）。
注意：显示 通过本示例可知selection-screen 中的 field 的显示状态都是 的，在程序中修改其属性 active 的值为 '0' 时，该field就回隐藏起来。 但是在下一次屏幕显示前，其默认值又归为显示了。这时候可以在 at selection-screen output 事件或者 PBO中来修改active 值为 '0'即可。
另外，注意使用 modif id *** 来将selection screen 中的 field 指派到 screen-group1 中。 *** 是不超过三个字符的 id 名称，即指定了 screen-group1的值。
*&---------------------------------------------------------------------*
*& Report ZSELECTION_SCREEN *
*&---------------------------------------------------------------------*
*& *
*& *
*&---------------------------------------------------------------------*
REPORT zselection_screen .
INCLUDE <icon>.
TABLES: sscrfields,
sflight.
SELECTION-SCREEN: PUSHBUTTON /1(40) pbo1 "open block 1
USER-COMMAND ucomm_o1 MODIF ID mo1,
PUSHBUTTON /1(20) pbc1 "close block 1
USER-COMMAND ucomm_c1 MODIF ID mc1.
SELECTION-SCREEN BEGIN OF BLOCK b01 WITH FRAME.
PARAMETERS: name(10) TYPE c MODIF ID mc1.
SELECT-OPTIONS: s_car FOR sflight-carrid MODIF ID mc1,
* s_con FOR sflight-connid MODIF ID mc1,
* s_fld FOR sflight-fldate MODIF ID mc1,
s_pri FOR sflight-price MODIF ID mc1.
SELECTION-SCREEN END OF BLOCK b01.
SELECTION-SCREEN: PUSHBUTTON /1(40) pbo2 "open block 1
USER-COMMAND ucomm_o2 MODIF ID mo2,
PUSHBUTTON /1(20) pbc2 "close block 1
USER-COMMAND ucomm_c2 MODIF ID mc2.
SELECTION-SCREEN BEGIN OF BLOCK b02 WITH FRAME.
PARAMETERS: name2(20) TYPE c MODIF ID mc2.
SELECT-OPTIONS: s_car2 FOR sflight-carrid MODIF ID mc2,
* s_con2 FOR sflight-connid MODIF ID mc2,
* s_fld2 FOR sflight-fldate MODIF ID mc2,
s_pri2 FOR sflight-price MODIF ID mc2.
SELECTION-SCREEN END OF BLOCK b02.
PARAMETERS: par_cb1(1) TYPE c NO-DISPLAY,
par_cb2(1) TYPE c NO-DISPLAY.
INITIALIZATION.
CONCATENATE icon_expand: '打开' '' INTO pbo1,
'打开' '' INTO pbo2.
CONCATENATE icon_collapse: '关闭' '' INTO pbc1,
'关闭' '' INTO pbc2.
par_cb1 = 'X'.
par_cb2 = 'X'.
AT SELECTION-SCREEN.
CASE sscrfields-ucomm.
WHEN 'UCOMM_O1'.
CLEAR par_cb1.
WHEN 'UCOMM_C1'.
par_cb1 = 'X'.
WHEN 'UCOMM_O2'.
CLEAR par_cb2.
WHEN 'UCOMM_C2'.
par_cb2 = 'X'.
ENDCASE.
AT SELECTION-SCREEN OUTPUT.
LOOP AT SCREEN.
PERFORM close_block USING: par_cb1 'MO1' 'X',
par_cb1 'MC1' space,
par_cb2 'MO2' 'X',
par_cb2 'MC2' space.
ENDLOOP.
*&--------------------------------------------------------------------*
*& Form close_block
*&--------------------------------------------------------------------*
* text
*---------------------------------------------------------------------*
* -->VALUE(U_CLOtextLOCK)
* -->U_MODIFY_IDtext
* -->U_CONVERT text
*---------------------------------------------------------------------*
FORM close_block USING value(u_close_block) LIKE par_cb1
u_modify_id LIKE screen-group1
u_convert.
IF NOT u_convert IS INITIAL.
IF u_close_block IS INITIAL.
u_close_block = 'X'.
ELSE.
CLEAR u_close_block.
ENDIF.
ENDIF.
IF ( screen-group1 = u_modify_id )
AND ( NOT u_close_block IS INITIAL ).
screen-active = '0'.
MODIFY SCREEN.
ENDIF.
ENDFORM. "close_block