函数RS_REFRESH_FROM_SELECTOPTIONS可以取得选择画面中的select-option和parameters的输入值。

代码如下

REPORT ztest_get_select_value.

*&---------------------------------------------------------------------*
*& Data Declaration
*&---------------------------------------------------------------------*
TABLES: mara.
DATA:git_params TYPE TABLE OF rsparams.
DATA:gwa_params TYPE rsparams.
*&---------------------------------------------------------------------*
*& Selection Screen
*&---------------------------------------------------------------------*

SELECT-OPTIONS:s_matnr FOR mara-matnr.
PARAMETERS:p_mtart TYPE mara-mtart.
PARAMETERS:p_matkl TYPE mara-matkl.

*&---------------------------------------------------------------------*

*& Start of Selection

*&---------------------------------------------------------------------*

START-OF-SELECTION.

  CALL FUNCTION 'RS_REFRESH_FROM_SELECTOPTIONS'
    EXPORTING
      curr_report     = sy-repid
    TABLES
      selection_table = git_params[].

  SORT git_params BY kind.

  WRITE:/ 'Parameters'.
  WRITE:/ 'Name' ,20 'Value' .

  LOOP AT git_params INTO gwa_params WHERE kind = 'P'.

    WRITE:/ gwa_params-selname ,20 gwa_params-low.

  ENDLOOP.

  SKIP.

  WRITE:/ 'Select-Options'.
  WRITE:/ 'Name' ,20 'Sign' ,25 'Option',32 'Low',52 'High'.

  LOOP AT git_params INTO gwa_params WHERE kind = 'S'.

    WRITE:/ gwa_params-selname ,20 gwa_params-sign ,
    25 gwa_params-option, 32 gwa_params-low,
    52 gwa_params-high.

  ENDLOOP.

测试：

选择画面中输入需要的值：

运行结果：

以上。