SAP ABAP Programming Made Easy - Theory & FAQs

REPORT ztest. PARAMETERS : p_file TYPE rlgrap-filename. AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_file. CALL FUNCTION 'KD_GET_FILENAME_ON_F4' CHANGING file_name = p_file EXCEPTIONS mask_too_long = 1 OTHERS = 2. IF sy-subrc <> 0. ENDIF. OUTPUT: On pressing F4 on the field, ALSO READ: - ABAP EVENTS During Runtime Of A Report Program. - INITIALIZATION Event - Introduction With A Sample Code. - AT SELECTION-SCREEN Event - Introduction With A Sample Code. - AT SELECTION-SCREEN OUTPUT Event - Introduction With A Sample Code. - AT SELECTION-SCREEN ON VALUE REQUEST- Introduction With A Sample Code. - AT SELECTION-SCREEN ON HELP REQUEST- Introduction With A Sample Code. - AT SELECTION-SCREEN ON - Introduction With A Sample Code. - Sample Program On AT SELECTION-SCREEN OUTPUT - 1. - Sample Program On AT SELECTION-SCREEN OUTPUT - 2. - Sample Program On AT SELECTION-SCREEN OUTPUT - 3. - Sample Program On AT SELECTION...

REPORT ztest. PARAMETERS: p_ebeln TYPE ekpo-ebeln. TYPES: BEGIN OF x_ekpo, END OF x_ekpo. DATA: it_ekpo TYPE STANDARD TABLE OF x_ekpo, wa_ekpo TYPE x_ekpo, it_return TYPE STANDARD TABLE OF ddshretval, wa_return LIKE LINE OF it_return. AT SELECTION-SCREEN ON VALUE-REQUEST FOR p_ebeln. SELECT * UP TO 2 ROWS FROM ekpo INTO CORRESPONDING FIELDS OF TABLE it_ekpo. CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST' EXPORTING retfield = 'EBELN' window_title = 'EKPO Records' value_org = 'S' TABLES value_tab = it_ekpo return_tab = it_return EXCEPTIONS parameter_error = 1 no_values_found = 2 OTHERS = 3. READ TABLE it_return INTO wa_return INDEX 1.     p_ebeln = wa_return-fieldval. OUTPUT: ALSO READ: - ABAP EVENTS During Runtime Of A Report Program. - INITIALIZATION Event - Introduction With A Sample Code. - AT SELECTION-SCREEN Event - Introduction With A Sample Code. - AT SELECTION-S...

AT SELECTION-SCREEN ON VALUE REQUEST FOR <FIELD>. This event is triggered when the user hits F4 on the field in a selection screen. This event gets triggered at the POV of the selection screen. If an input field declared in an executable program refers to a field in the ABAP Dictionary for which possible entries help is defined, the list of values from the Dictionary is automatically displayed when the user calls the F4 help for that field. In case, if a user wants to create possible values help for report input fields that have no Dictionary reference, or to override the Dictionary input help linked to the field, he/she can create one by using AT SELECTION-SCREEN ON VALUE-REQUEST FOR <field> event . Also remember that if there is a select-option field, then this event has to be written twice i.e. one for field-low and another for field-high. SAMPLE PROGRAM: REPORT ztest . TABLES: t001. TYPES: BEGIN OF x_t001, bukrs TYPE t001-bukrs, butxt TYPE t0...