What is the wrong in code while creating a container

Question

Hello all,
what is the wrong in code while creating container.
*& Report  ZTEST_TREE4
REPORT  ztest_tree4.
*       CLASS lcl_application DEFINITION
CLASS lcl_application DEFINITION CREATE PRIVATE.
  PUBLIC SECTION.
    CLASS-METHODS: run_application.
    METHODS constructor.
  PRIVATE SECTION.
    CLASS-DATA: s_container TYPE REF TO cl_gui_simple_container.
    DATA: container TYPE REF TO cl_gui_simple_container.
ENDCLASS.                    "lcl_application DEFINITION
*       CLASS lcl_implementation DEFINITION
CLASS lcl_application IMPLEMENTATION.
  METHOD run_application.
    IF lcl_application=>s_container IS INITIAL.
      CREATE OBJECT lcl_application=>s_container.
    ENDIF.
  ENDMETHOD.                    "run_application
  METHOD constructor.
    CREATE OBJECT container.
  ENDMETHOD.                    "constructor
ENDCLASS.                    "lcl_implementation DEFINITION
*&      Module  STATUS_0100  OUTPUT
*       text
MODULE status_0100 OUTPUT.
  CALL METHOD lcl_application=>run_application.
  SET PF-STATUS 'CO_100'.
  SET TITLEBAR 'CO_100'.
ENDMODULE.                 " STATUS_0100  OUTPUT
*&      Module  USER_COMMAND_0100  INPUT
*       text
MODULE user_command_0100 INPUT.
ENDMODULE.                 " USER_COMMAND_0100  INPUT
*&      Module  exit  INPUT
*       text
MODULE exit INPUT.
  LEAVE PROGRAM.
ENDMODULE.                 " exit  INPUT
START-OF-SELECTION.
  CALL SCREEN 100.
regards,
Lisa.
Edited by: Lisa Roy on Mar 6, 2008 10:15 AM
Edited by: Lisa Roy on Mar 6, 2008 10:29 AM

Answer 1

Hi Lisa,
a container must be placed in a respective screen area. Also the module calls must be implemented in your screen input and output sections. Finally you have to place something (a GUI control) in your container.
I do not see anything like this in your program. So I don't know what you are asking about. Do you get any error message?
Regards,
Clemens