CL_SALV_TABLE event

[Madjid_Khanevadegi]

Hello

i make an alv report with "CL_ALV_TABLE" class that has a method, double_click

METHODS : on_double_click FOR EVENT double_click OF cl_salv_events_table
      IMPORTING row column.

this method works truly, when double click on a specific row of ALV

i want call this method in a push button as illustrate , but this error raise "Dereferencing of the null reference"

  TRY.
    data x_lcl_event_handler type ref to lcl_event_handler.
    call method x_lcl_event_handler->ON_DOUBLE_CLICK
                                     exporting Row     = '1'
                                               column  = 'STEP' .
  CATCH CX_ROOT INTO lr_exp.
    lv_text = lr_exp->get_text( ).
    message 'Error: .' && lv_text type 'S'.
  ENDTRY.

i can not focus on the alv table before call this code

Thanks in advance for your help

[Madjid_Khanevadegi]

Hello

i make an alv report with "CL_ALV_TABLE" class that has a method, double_click

METHODS : on_double_click FOR EVENT double_click OF cl_salv_events_table
      IMPORTING row column.

this method works truly, when double click on a specific row of ALV

i want call this method in a push button as illustrate , but this error raise "Dereferencing of the null reference"

  TRY.
    data x_lcl_event_handler type ref to lcl_event_handler.
    call method x_lcl_event_handler->ON_DOUBLE_CLICK
                                     exporting Row     = '1'
                                               column  = 'STEP' .
  CATCH CX_ROOT INTO lr_exp.
    lv_text = lr_exp->get_text( ).
    message 'Error: .' && lv_text type 'S'.
  ENDTRY.

i can not focus on the alv table before call this code

Thanks in advance for your help

[Sandra_Rossi]

The error is obvious, you should instantiate x_lcl_event_handler before calling its method. Why can't you?

What means "I can not focus on the alv table before call this code"?

[Madjid_Khanevadegi]

thanks sandra.rossi

this method is not work on outside of ALV table (when button press) .

the x_lcl_event_handler is instant of lcl_event_handler class.

[Sandra_Rossi]

It's difficult to help without any information about the important parts of your code.

There shouldn't by any problem to call the method of a public attribute.

Just a guess, I hope it will help you: make x_lcl_event_handler as a public attribute of your ALV instance, or make it a global variable, and calling any of its public methods should be possible.

[Madjid_Khanevadegi]

these methods was public

"--class handler--"
 CLASS lcl_event_handler  DEFINITION DEFERRED. 


"--CLASS lcl_handle_events DEFINITION--"
CLASS lcl_event_handler DEFINITION FINAL.
  PUBLIC SECTION.
    METHODS : on_double_click FOR EVENT double_click OF cl_salv_events_table
      IMPORTING row column.
    METHODS : on_link_click FOR EVENT link_click OF cl_salv_events_table
      IMPORTING row column.
ENDCLASS."lcl_handle_events DEFINITION



"--CLASS lcl_handle_events IMPLEMENTATION--"
CLASS lcl_event_handler IMPLEMENTATION.
  METHOD on_double_click.
    MESSAGE i001(00) WITH 'Double click1: column: ' column ' / line: ' row.
  ENDMETHOD."on_double_click

  METHOD on_link_click.
    MESSAGE i001(00) WITH 'Click on link: column: ' column ' / line: ' row.
  ENDMETHOD."on_link_click

ENDCLASS."lcl_handle_events IMPLEMENTATION

[matt]

Rather than just create a class to handle the events -put everything into a class,including these methods.

[Sandra_Rossi]

I just repeat myself: "Just a guess, I hope it will help you: make x_lcl_event_handler as a public attribute of your ALV instance, or make it a global variable, and calling any of its public methods should be possible."

[DoanManhQuynh]

If you are following demo: SALV_DEMO_TABLE_EVENTS, did you do §6 register to the events of cl_salv_table?