ALV Grid left Most Button

Question

Hi All,
I had created a ALV grid control. I want to handle the left most button of the alv grid, which when clicked , entire row gets selected.
I have to do some functionality when this button is clicked. So, can anybody help me in handling this button event.

Answer 1

How about just making the row a hotspot.  When user double clicks the row, trigger some functionality.
Here is a sample program
report zrich_0001.
data: begin of i_alv occurs 0,
      matnr type mara-matnr,
      maktx type makt-maktx,
      end of i_alv.
*       CLASS lcl_event_receiver DEFINITION      Handles Double Click
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.
  private section.
endclass.
*       CLASS lCL_EVENT_RECEIVER IMPLEMENTATION    Handles Double Click
class lcl_event_receiver implementation.
  method handle_double_click.
    perform drill_down using e_row-index.
  endmethod.
endclass.
data: alv_container  type ref to cl_gui_custom_container.
data: event_receiver type ref to lcl_event_receiver.
data: alv_grid       type ref to cl_gui_alv_grid.
data: layout    type lvc_s_layo.
data: fieldcat  type lvc_t_fcat.
selection-screen begin of block b1 with frame title text-001 .
select-options: s_matnr for i_alv-matnr.
selection-screen end of block b1.
start-of-selection.
  select * into corresponding fields of table i_alv
        from mara
          inner join makt
            on mara~matnr = makt~matnr
               where mara~matnr in s_matnr
                 and makt~spras = sy-langu.
  sort i_alv ascending by matnr.
  call screen 100.
*      Module  status_0100  OUTPUT
module status_0100 output.
  set pf-status '0100'.
  set titlebar '0100'.
  data: variant type  disvariant.
  variant-report = sy-repid.
  variant-username = sy-uname.
* Create Controls
  create object alv_container
         exporting
               container_name    = 'ALV_CONTAINER'.
  create object alv_grid
         exporting
               i_parent          =  alv_container.
*  Create Event Receiver
  create object event_receiver.
*  ALV Specific. Data selection.
*  Populate Field Catalog
  data: ls_fcat type lvc_s_fcat.
  refresh: fieldcat.
  clear: ls_fcat.
  ls_fcat-reptext    = 'Material Number'.
  ls_fcat-coltext    = 'Material Number'.
  ls_fcat-fieldname  = 'MATNR'.
  ls_fcat-ref_table  = 'I_ALV'.
  ls_fcat-outputlen  = '18'.
  ls_fcat-col_pos    = 1.
  append ls_fcat to fieldcat.
  clear: ls_fcat.
  ls_fcat-reptext    = 'Material Description'.
  ls_fcat-coltext    = 'Material Description'.
  ls_fcat-fieldname  = 'MAKTX'.
  ls_fcat-ref_table  = 'I_ALV'.
  ls_fcat-outputlen  = '40'.
  ls_fcat-col_pos    = 2.
  append ls_fcat to fieldcat.
* Set table for display
  call method alv_grid->set_table_for_first_display
      exporting
           is_layout              = layout
           is_variant             = variant
           i_save                 = 'U'
           i_structure_name       = 'I_ALV'
      changing
           it_outtab       = i_alv[]
           it_fieldcatalog = fieldcat[].
*   handler for ALV grid
  set handler event_receiver->handle_double_click for alv_grid.
endmodule.
*      Module  USER_COMMAND_0100  INPUT
module user_command_0100 input.
  case sy-ucomm.
    when 'BACK' or 'CANC'.
      if not alv_container is initial.
        call method alv_container->free.
        clear: alv_container.
        free : alv_container.
      endif.
      if sy-subrc = 0.
        set screen 0.
        leave screen.
      else.
        leave program.
      endif.
    when 'EXIT'.
      if not alv_container is initial.
        call method alv_container->free.
        clear: alv_container.
        free : alv_container.
      endif.
      leave program.
  endcase.
endmodule.
* DRILL_DOWN
form drill_down using index.
  read table i_alv index index.
  if sy-subrc = 0.
    set parameter id 'MAT' field i_alv-matnr.
    call transaction 'MM03' and skip first screen.
    if not alv_container is initial.
      call method alv_container->free.
      clear: alv_container.
      free : alv_container.
    endif.
  endif.
endform.
Regards,
Rich Heilman