Open your Window from WDA Component and goto Outbound Plugs
Create Exit Plug ‘O_WD_EXIT’ , Plug Type Exit
Open the view
Add Button for Exit
Create Action ,provide Action Name and double click the Action Name
Write the below Code in you Action method
[cc lang=”ABAP”] DATA: lr_view_cntr TYPE REF TO if_wd_view_controller. lr_window_cntr
TYPE REF TO if_wd_window_controller, ls_para TYPE wdr_event_parameter, lt_para TYPE
wdr_event_parameter_list, lr_val TYPE REF TO data. FIELD-SYMBOLS : TYPE ANY.
lr_view_cntr = wd_this->wd_get_api( ).
CALL METHOD lr_view_cntr->get_embedding_window_ctlr
RECEIVING
result = lr_window_cntr.
CREATE DATA lr_val TYPE c.
ASSIGN lr_val->* TO .
=’X’. ls_para-name =’CLOSE_WINDOW’. ls_para-value = lr_val. INSERT ls_para INTO
table lt_para. lr_window_cntr->if_wd_view_controller~fire_plug( EXPORTING plug_name
=’O_WD_EXIT’ parameters = lt_para ). [/cc]
Mention your Exit Name which you created in Step 2