How to find the Component from Feeder class?

Hello Team,

I have to display a pop-up window when "Print_Preview" custom button is pressed on SRM RFx Screen Portal. For that button i found the Feeder class: /SAPSRM/CL_CLL_POWLT_RFQ.

But to trigger the POWL_FOLLOW_UP event where to create this event ? And what is its linked WD component?

/SAPSRM/CL_CLL_POWLT_RFQ->handle_action code under this method is below:

CASE i_actionid.

**********************************************************************************

*  Print preview button

***********************************************************************************

     WHEN 'ZPRINT'.

*    Important: this triggers the event

      e_portal_actions-fire_wdevent = 'X'.

    ENDCASE.

Regards,

Shabeer Ahmed Shaik.