如何限制SELECT－OPTIONS的选择屏幕的OPTION

REPORT Z_CONECT_A.

* Include type pool

 SSCRTYPE-POOLS sscr.

TABLES : marc.

*定义选择屏幕
select-options :  s_matnr for marc-matnr,  

s_werks for marc-werks.

* Define the object to be passed to the RESTRICTION 

parameterDATA restrict TYPE sscr_restrict.

* Auxiliary objects for filling RESTRICT

DATA : optlist TYPE sscr_opt_list,         

  ass type sscr_ass.INITIALIZATION.

* 限制MATNR参数只能使用‘EQ’ 和‘BT’. 

 optlist-name = 'OBJECTKEY1'.  

optlist-options-eq = 'X'.  

optlist-options-bt = 'X'. 

 APPEND optlist TO restrict-opt_list_tab. 

 ass-kind = 'S'. 

 ass-name = 'S_MATNR'. 

 ass-sg_main = 'I'. 

 ass-sg_addy = space.  

ass-op_main = 'OBJECTKEY1'. 

 APPEND ass TO restrict-ass_tab.

* 限制 WERKS 参数只能使用CP, GE, LT, NE. 

 optlist-name = 'OBJECTKEY2'. 

 optlist-options-cp = 'X'. 

 optlist-options-ge = 'X'.  

optlist-options-lt = 'X'. 

 optlist-options-ne = 'X'. 

 APPEND optlist TO restrict-opt_list_tab.

  ass-kind = 'S'.  

ass-name = 'S_WERKS'. 

 ass-sg_main = 'I'. 

 ass-sg_addy = space. 

 ass-op_main = 'OBJECTKEY2'.  

APPEND ass TO restrict-ass_tab. 

 CALL FUNCTION 'SELECT_OPTIONS_RESTRICT'  

    EXPORTING    restriction                  = restrict  

     EXCEPTIONS     TOO_LATE                     = 1    

     REPEATED                     = 2     

     SELOPT_WITHOUT_OPTIONS       = 3    

     SELOPT_WITHOUT_SIGNS         = 4    

     INVALID_SIGN                 = 5    

     EMPTY_OPTION_LIST            = 6    

     INVALID_KIND                 = 7    

      REPEATED_KIND_A              = 8   

      OTHERS                       = 9            . 

     IF sy-subrc <> 0. 

       MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO       

              WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4. 

 ENDIF.