Unable to create object

Question

Hi Abapers,
I have written the code like this.
      CLASS lcl_event_receiver DEFINITION
CLASS LCL_EVENT_RECEIVER DEFINITION.
  PUBLIC SECTION.
    METHODS:
          HANDLE_DOUBLE_CLICK FOR EVENT DOUBLE_CLICK OF CL_GUI_ALV_GRID
                                              IMPORTING E_ROW E_COLUMN,
            HANDLE_CLOSE FOR EVENT CLOSE OF CL_GUI_DIALOGBOX_CONTAINER
                                              IMPORTING SENDER.
    DATA CHECK_BOX TYPE C.
ENDCLASS.
      CLASS LCL_EVENT_RECEIVER  IMPLENTATION
CLASS LCL_EVENT_RECEIVER IMPLEMENTATION.
  METHOD HANDLE_DOUBLE_CLICK.
    READ TABLE ALV_ITAB INDEX E_ROW-INDEX INTO WA_ITAB.
    PERFORM DATARETRIEVALTAB2 USING WA_ITAB.
    IF CHECK_BOX IS INITIAL.
      CHECK_BOX = 'x'.
      PERFORM CREATE_DETAIL_LIST.
    ELSE.
     CALL METHOD CL_DIALOGBOX_OBJ->SET_VISIBLE
       EXPORTING
         VISIBLE           = 'x'.
     CALL METHOD CL_ALV_OBJ1->REFRESH_TABLE_DISPLAY.
      ENDIF.
    ENDMETHOD.
METHOD HANDLE_CLOSE.
CALL METHOD SENDER->SET_VISIBLE
   EXPORTING
     VISIBLE           = SPACE.
     ENDMETHOD.
  ENDCLASS.
but when I am creating the object
data event_obj type ref to lcl_event_receiver.
It is showing error that type lcl_event_receiver is unknown.
Kindly tell me the reason.
Regards
Ansuman

Answer 1

Hi Ansuman,
go through following piece of code and define accordingly...
i hope u will get the solution..
*&  Class Declaration
class lcl_event_receiver definition deferred.
class lcl_event_receiver1 definition deferred.
data gr_events_reciever type ref to lcl_event_receiver.
data gr_events_reciever1 type ref to lcl_event_receiver1.
*& Class Definition
class lcl_event_receiver definition.
   public section.
     methods:
    double_click
         for event double_click of cl_gui_alv_grid
             importing e_row e_column .
endclass.                    "lcl_event_receiver DEFINITION
class lcl_event_receiver1 definition.
   public section.
     methods:
     handle_double_click1
         for event double_click of cl_gui_alv_grid
             importing e_row e_column .
endclass.                    "lcl_event_receiver DEFINITION
*& CLASS IMPLEMETATION
class lcl_event_receiver implementation.
   method double_click.
     perform event_double_click using  e_row e_column.
   endmethod.                    "handle_double_click
endclass.                    "lcl_event_receiver IMPLEMENTATION
      CLASS lcl_event_receiver1 IMPLEMENTATION
class lcl_event_receiver1 implementation.
   method handle_double_click1.
     perform event_double_click1 using  e_row e_column.
   endmethod.                    "handle_double_click
endclass.                    "lcl_event_receiver1
Thanks& Regards
Ashu Singh.