wd

Create Custom Button in initialization method
like  below.

  DATA lo_cmp_usage TYPE REF TO if_wd_component_usage,

      lo_alv_config  TYPE REF TO cl_salv_wd_config_table,

  lo_cmp_usage =   wd_this->wd_cpuse_alv_risk_result( ).

  IF lo_cmp_usage->has_active_component( ) IS INITIAL.

    lo_cmp_usage->create_component( ).

  ENDIF.

  DATA lo_interfacecontroller TYPE REF TO iwci_salv_wd_table .

  lo_interfacecontroller =   wd_this->wd_cpifc_alv_risk_result( ).

  lo_alv_config = lo_interfacecontroller->get_model( ).

    Pass This Ref to Global.

  
Wd_this->go_alv_ref = lo_alv_config .

Create Custom Button.

DATA lr_buttonui TYPE REF TO cl_salv_wd_fe_button.

  DATA button1 TYPE REF TO cl_salv_wd_function.



  CREATE OBJECT lr_buttonui.

  lr_buttonui->set_text('Button')."setting the text of the button on alv toolbar

  button1 = lo_alv_config->if_salv_wd_function_settings~create_function( id = 'BUTTON')."creating the function for alv button

  button1->set_editor( lr_buttonui ).

Create One Method of Event handler of On_Function

method BUTTON .
DATA: lr_but type string,

      lr_buttonui TYPE REF TO cl_salv_wd_fe_button,

      button1 TYPE REF TO cl_salv_wd_function.



lr_but = r_param->id.
if lr_but = 'BUTTON'.  "Ur Button Id in Tool ALV

   create OBJECT  lr_buttonui.

   lr_buttonui->set_enabled( abap_false ).

   lr_buttonui->set_text( 'Button' ).  "Same Button text

   Button1 = wd_this->go_alv_ref->if_salv_wd_function_settings~get_function( id = lr_but  ).

   Button1->set_editor( lr_buttonui ).
endif.
endmethod.