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14.Selection Screens (14.4 Selection Screen Variants (14.4.2 Variant…

- - - - to set dynamic values for selection screen fields
        
        table variable from table TVARVC
        
        dynamic date calculations
        
        dynamic time calculations
        
        user specific variables
  - - - Transaction STVARV
    - - Variant Attributes screen of the variant for the selection screen
      - Use F4 help in the Name of Variable column to select the variant created in Transaction STVARV.
  - - - Once this option is selected, use the F4 help in the NAME OF VARIABLE field to select from the available options
  - - - use the F4 help in the NAME OF VARIABLE field to select from the available options
- - - - PARAMETERS p_carrid TYPE s_carrid.
  - - - SELECTION-SCREEN BEGIN OF SCREEN 2000. PARAMETERS p_connid TYPE s_connid. SELECTION-SCREEN END OF SCREEN 2000.
    - - CALL SELECTION-SCREEN 2000.
    - - PROGRAM ZSUBSCREEN_EXAMPLE. DATA v_matnr TYPE matnr. SELECTION-SCREEN BEGIN OF SCREEN 500 AS SUBSCREEN. SELECT-OPTIONS s_matnr FOR v_matnr. SELECTION-SCREEN END OF SCREEN 500.
- - - - triggered by PBO event of the selection screen
        
        set default values for the selection screen fields or dynamically change field properties (e.g., enable or diable fields)
        
        REPORT ZEXAMPLE_PROGRAM. PARAMETERS p_date TYPE sy-datum. AT SELECTION-SCREEN OUTPUT. p_data = sy-datum.
        
        set the current date as the default value for the p_date field
    - - triggered in the PAI event of the selection screen
        
        used to validate the field input
        
        If an error or warning message is shown, the field will be automatically input-enabled.
        
        PARAMETERS p_matnr TYPE matnr. AT SELECTION-SCREEN ON p_matnr.
    - - triggered when the selection table of the SELECT-OPTIONS field is fully passed to the ABAP program after the user action on the multiple selection window
        
        validate all the entries of the selection table
        
        SELECT-OPTIONS s_matnr FOR v_matnr. AT SELECTION-SCREEN ON END OF s_matnr.
    - - triggered when the data of all the fields of the block is transferred to the program
        
        If an error or warning message is raised in this event, all the fields in the block will be input-enabled
        
        SELECTION-SCREEN BEGIN OF BLOCK b1. PARAMETERS: p_matnr TYPE matnr, p_spras TYPE spras. SELECTION-SCREEN END OF BLOCK. AT SELECTION-SCREEN ON BLOCK b1.
    - - triggered when all the fields of radio button group are passed to the ABAP program
        
        If an error or warning message is raised in this event, all the fields in the ratio button group will be inputed-enabled.
        
        PARAMETERS: p_day RADIOBUTTON GROUP rb1, p_month RADIOBUTTON GROUP rb1, p_year RADIOBUTTON GROUP rb1. AT SELECTION-SCREEN ON RADIOBUTTON GROUP rb1.
    - - triggered after all selection screen events are executed
        
        can be used to validate user inputs
        
        If an error or warning message is raised in this event, all the fields of the selection screen will be input-enabled and the selection screen becomes ready for input again.
    - - triggered when the user select F1 help for the field
        
        PARAMETERS p_matnr TYPE matnr. AT SELECTION-SCREEN ON HELP-REQUEST FOR p_matnr.
    - - triggered when the user selects F4 help for the field
        
        PARAMETERS p_matnr TYPE matnr. AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_matnr.
    - - triggered when the user selects the BACK, EXIT, or CANCEL button on the selection screen
- - - - Background
        
        Variant Name
- - - - change the field attributes before the selection screen is displayed to the user
- - - - SUBMIT zdemo_prg WITH p_matnr=v_matnr AND RETURN.
        
        the p_matnr selection screen field of the zdemo_prg program will be passed the value of v_matnr from the calling program
    - - SUBMIT zdemo_prg WITH p_matnr=v_matnr VIA SELECTION-SCREEN AND RETURN.