topic unable to create object in Application Development and Automation Discussions

unable to create object

Former Member — Wed, 23 Jul 2008 13:24:20 GMT

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

Re: unable to create object

Former Member — Wed, 23 Jul 2008 13:34:53 GMT

Hi!

I think you are creating object before defining the class.

First define the class, under that create the object.

Regards

Abhijeet

Re: unable to create object

Former Member — Thu, 24 Jul 2008 05:02:40 GMT

hi,

Make Sure You are Defining Objects in the DAta Section but

You are Creating them in START-OF_SELECTION event.

You have to explicitly write the event Statement.

Check this out.

Regards

Sumit Agarwal

Re: unable to create object

Former Member — Mon, 28 Jul 2008 06:56:19 GMT

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.

Re: unable to create object

Former Member — Tue, 29 Jul 2008 05:43:12 GMT

Hi Ansuman,

For your reference..

*---------------------------------------------------------------------*
*       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.                    "LCL_EVENT_RECEIVER DEFINITION

*---------------------------------------------------------------------*
*       CLASS lcl_event_receiver IMPLEMENTATION
*---------------------------------------------------------------------*
*
*---------------------------------------------------------------------*
CLASS lcl_event_receiver IMPLEMENTATION.
  METHOD handle_double_click.
**    your code
  ENDMETHOD.                    "HANDLE_DOUBLE_CLICK

  METHOD handle_close.
**    your code
  ENDMETHOD.                    "HANDLE_CLOSE
ENDCLASS.                    "LCL_EVENT_RECEIVER DEFINITION

DATA cobj TYPE REF TO lcl_event_receiver.

START-OF-SELECTION.
  CREATE OBJECT cobj.

Re: unable to create object

Former Member — Tue, 29 Jul 2008 07:11:48 GMT

Hi Ansuman,

Kindly create the object in the following way:

DATA:OBJ TYPE REF TO <CLASS NAME>.

START-OF-SELECTION.

CREATE OBJECT OBJ.

Always use 'START-OF-SELECTION' event to avoid such errors.

Reward if useful.

Cheers,

Vaishnavi Putlur.

Re: unable to create object

former_member8532 — Tue, 29 Jul 2008 10:24:03 GMT

hi,

just write this at the top "class lcl_event_receiver definition deferred."

because if you try to use a class before use it will give you an like u are getting just tell the compiler by writing "class lcl_event_receiver definition deferred." that you have defined class. just create object.

Thnaks & Regards.

Punit