you had to user TOP_OF_PAGE to display ALV header .
①create event class like below
CLASS LCL_EVENT_RECEIVER DEFINITION.
PUBLIC SECTION.
METHODS: HANDLE_TOP_OF_PAGE
FOR EVENT TOP_OF_PAGE OF CL_GUI_ALV_GRID
IMPORTING
E_DYNDOC_ID
TABLE_INDEX ,
ENDCALSS .
CLASS LCL_EVENT_RECEIVER IMPLEMENTATION.
METHOD HANDLE_TOP_OF_PAGE .
PERFORM EVENT_TOP_OF_PAGE USING E_DYNDOC_ID
TABLE_INDEX .
ENDMETHOD.
ENDCALSS .
②set event handle for display alv object
IF OBJ_EVENT_RECEIVER IS INITIAL .
CREATE OBJECT OBJ_EVENT_RECEIVER.
ENDIF .
SET HANDLER :
OBJ_EVENT_RECEIVER->HANDLE_TOP_OF_PAGE FOR GRID1 .
※grid1 is display ALV object
③ trigger top_of_event (for this step must be after the ALV method SET_TABLE_FOR_FIRST_DISPLAY)
CALL METHOD GRID1->LIST_PROCESSING_EVENTS
EXPORTING
I_EVENT_NAME = 'TOP_OF_PAGE'
I_DYNDOC_ID = OBJ_DYNDOC_ID
I_TABLE_INDEX = 1
※ OBJ_DYNDOC_ID is top_of_page contents that you can edit .
④edit header for top_of_page display
at hear create form for top_of_page contents like below
FORM EVENT_TOP_OF_PAGE USING IM_OBJ_DYNDOC_ID TYPE REF TO CL_DD_DOCUMENT
IM_TABLE_INDEX TYPE SYINDEX .
"1 .at this form use class CL_DD_DOCUMENT's method ADD_TEXT, NEW_LINE .
CALL METHOD I_OBJ_DYNDOC_ID->ADD_TEXT
EXPORTING
TEXT = 'Top_of_page'
SAP_STYLE = CL_DD_AREA=>HEADING
SAP_FONTSIZE = CL_DD_AREA=>EXTRA_LARGE
SAP_COLOR = CL_DD_AREA=>LIST_HEADING_INT.
"2 .create a customer container for display CL_DD_DOCUMENT
if OBJ_HTML_CNTRL is initial .
CREATE OBJECT OBJ_HTML_CNTRL
EXPORTING
PARENT = 'customer_container'.
endif .
CALL METHOD IM_OBJ_DYNDOC_ID->MERGE_DOCUMENT.
CALL METHOD IM_OBJ_DYNDOC_ID->DISPLAY_DOCUMENT
EXPORTING
REUSE_CONTROL = 'X'
PARENT = OBJ_HTML_CNTRL
EXCEPTIONS
HTML_DISPLAY_ERROR = 1.
ENDFORM .
Bluesky
