set_toolbar_interactive

[Former Member]

Hi;

I receive dump error message "Access not possible using 'NULL' object reference." if i call method set_toolbar_interactive to set my toolbar object in ALV grid. Which parameter should i pass to this method?

Thx

Ali

[Former Member]

Hi Ali,

Refer Sample program:

BCALV_GRID_05

BCALV_GRID_VERIFY

Reward points if that helps.

Manish

[uwe_schieferstein]

Hello Ali

The event TOOLBAR has the importing parameter E_OBJECT.

Your event handler method should look like this:

  handle_toolbar FOR EVENT toolbar OF cl_gui_alv_grid
    IMPORTING
      e_object
      sender.

The toolbar functions are stored in e_object->mt_toolbar.

Your error message indicates that you probably have suppressed the toolbar of the ALV grid (layout-no_toolbar = 'X'). To omit the error simply add the following line in your event handler method:

* Check if we have a toolbar instance
  CHECK ( e_object IS BOUND ).

Regards

Uwe

[Former Member]

Hi Uwe;

it did not work unfortunately. if i add the command

CALL METHOD gr_alvgrid2->set_toolbar_interactive i get this dump error message. Actually without this my toolbar runs just fine. Should i really use this method?

Thx for the help

Ali

[uwe_schieferstein]

Hello Ali

In this case you have not instantiated your ALV grid. Here is a sample report demonstrating an interactive toolbar. Push several times the ENTER button and the toolbar functions will be disabled one by one. Please check the coding in PBO module <b>PBO</b>.

[code]PROGRAM ZUS_SDN_BCALV_GRID_DEMO.

DATA: ok_code LIKE sy-ucomm,

gt_sflight TYPE TABLE OF sflight,

g_container TYPE scrfname VALUE 'BCALV_GRID_DEMO_0100_CONT1',

grid1 TYPE REF TO cl_gui_alv_grid,

g_custom_container TYPE REF TO cl_gui_custom_container.

----

---

• CLASS lcl_eventhandler DEFINITION

----

---

*

----

---

CLASS lcl_eventhandler DEFINITION.

PUBLIC SECTION.

CLASS-DATA:

md_cnt TYPE i.

CLASS-METHODS:

handle_toolbar FOR EVENT toolbar OF cl_gui_alv_grid

IMPORTING

e_object

e_interactive

sender.

ENDCLASS. "lcl_eventhandler DEFINITION

----

---

• CLASS lcl_eventhandler IMPLEMENTATION

----

---

*

----

---

CLASS lcl_eventhandler IMPLEMENTATION.

METHOD handle_toolbar.

DATA:

ls_button TYPE stb_button.

ADD 1 TO md_cnt. " a simple counter

LOOP AT e_object->mt_toolbar INTO ls_button FROM 1 TO md_cnt.

ls_button-disabled = 'X'.

MODIFY e_object->mt_toolbar FROM ls_button.

ENDLOOP.

ENDMETHOD. "handle_toolbar

ENDCLASS. "lcl_eventhandler IMPLEMENTATION

START-OF-SELECTION.

----

---

• MAIN *

----

---

SELECT * FROM sflight INTO TABLE gt_sflight.

CALL SCREEN 100.

----

---

• MODULE PBO OUTPUT *

----

---

MODULE pbo OUTPUT.

SET PF-STATUS 'MAIN100'.

IF g_custom_container IS INITIAL.

CREATE OBJECT g_custom_container

EXPORTING container_name = g_container.

• Instantiate ALV grid control

CREATE OBJECT grid1

EXPORTING i_parent = g_custom_container.

CALL METHOD grid1->set_table_for_first_display

EXPORTING

i_structure_name = 'SFLIGHT'

CHANGING

it_outtab = gt_sflight.

• Set event handler for event TOOLBAR

SET HANDLER:

lcl_eventhandler=>handle_toolbar FOR grid1.

ENDIF.

• $Comment: Toolbar can be modified on-the-fly

grid1->set_toolbar_interactive( ).

ENDMODULE. "PBO OUTPUT

----

---

• MODULE PAI INPUT *

----

---

MODULE pai INPUT.

• to react on oi_custom_events:

CALL METHOD cl_gui_cfw=>dispatch.

CASE ok_code.

WHEN 'EXIT'.

PERFORM exit_program.

WHEN OTHERS.

• do nothing

ENDCASE.

CLEAR ok_code.

ENDMODULE. "PAI INPUT

----

---

• FORM EXIT_PROGRAM *

----

---

FORM exit_program.

• CALL METHOD G_CUSTOM_CONTAINER->FREE.

• CALL METHOD CL_GUI_CFW=>FLUSH.

LEAVE PROGRAM.

ENDFORM. "EXIT_PROGRAM[/code]

Regards

Uwe

[Former Member]

Hi

Where do you calling that method? It should trigger the event toolbar, are you using that event?

Max

[uwe_schieferstein]

Hello Max

After instantiating the grid control I call

[code]* $Comment: Toolbar can be modified on-the-fly

grid1->set_toolbar_interactive( ).[/code]

This method raises event TOOLBAR.

Regards

Uwe

[Former Member]

Hi

Uwe my question is for Ali, I saw you have raised that event.

I don't know if Ali has done it too.

Max