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• Create Web Dynpro Component(ZOVH_WD_ADOBE) with window name W_WINDOW with default iview V_VIEW.

• Save as local object or transportable object. 
• Double click on V_VIEW->Context tab: Define one attribute ADOBE_FORM(of type XSTRING) for the PDF that comes from Adobe forms. 

• Layout tab: Insert screen element ADOBE_FORM(of type InteractiveForm)  to display Adobe form in PDF format. 

• Goto ADOBE_FORM element properties->Bind PdfSource property with ADOBE_FORM attribute for Context.

• Methods tab->WDDOMODIFYVIEW method. Here we write code to get the PDF format of ADOBE form. 
• Get the function module of generated Form using FP_FUNCTION_MODULE_NAME. Set GETPDF to 'X'
• Open the spool job using function module FP_JOB_OPEN. 
• Call the generated function module. Get PDF data 
• Close the spool using function module FP_JOB_CLOSE.
• Pass PDF to Context attribute for PDF.
• Code

  METHOD wddomodifyview .
    TYPES:
          ty_outputparams TYPE sfpoutputparams, "Form Parameters for Form Processing
          ty_docparams    TYPE sfpdocparams,    "Form Processing Output Parameter
          ty_fpformoutput TYPE fpformoutput.
    DATA:
          wa_outputparams TYPE ty_outputparams,
          wa_docparams    TYPE ty_docparams,
          wa_fpformoutput TYPE ty_fpformoutput.
    DATA:
          gv_fm_name      TYPE rs38l_fnam,
          gv_pernr        TYPE pa0001-pernr,
          gv_ename        TYPE pa0001-ename,
          gv_bukrs        TYPE pa0001-bukrs.
   
    DATA lo_el_context TYPE REF TO if_wd_context_element.
    DATA ls_context    TYPE wd_this->element_context.
    DATA lv_adobe_form TYPE wd_this->element_context-adobe_form.
    DATA:
          c_pernr TYPE pernr_d VALUE '10008289'.
    " Sets the output parameters and opens the spool job
    wa_outputparams-device    =  'PRINTER'.
    wa_outputparams-dest      =  'LP01'.
    wa_outputparams-nodialog  = 'X'.
    wa_outputparams-preview   = 'X'.
    wa_outputparams-getpdf    = 'X'.
   
    CALL FUNCTION 'FP_JOB_OPEN'
      CHANGING
        ie_outputparams = wa_outputparams
      EXCEPTIONS
        cancel          = 1
        usage_error     = 2
        system_error    = 3
        internal_error  = 4
        OTHERS          = 5.
    IF sy-subrc <> 0.
      " <error handling>
    ENDIF.
    " Get the name of the generated function module
    CALL FUNCTION 'FP_FUNCTION_MODULE_NAME'
      EXPORTING
        i_name     = 'ZOVH_SIMPLE_FORM'
      IMPORTING
        e_funcname = gv_fm_name.
    IF sy-subrc <> 0.
      "<error handling>
    ENDIF.
   
    wa_docparams-langu   = 'E'.
    wa_docparams-country = 'SG'.
   
    " Fetch the Data and store it in the Internal Table
    SELECT SINGLE pernr ename bukrs
      FROM pa0001
      INTO (gv_pernr, gv_ename, gv_bukrs)
      WHERE pernr EQ c_pernr.
   
    CALL FUNCTION gv_fm_name
      EXPORTING
        pernr              = gv_pernr
        ename              = gv_ename
        bukrs              = gv_bukrs
      IMPORTING
        /1bcdwb/formoutput = wa_fpformoutput
      EXCEPTIONS
        usage_error        = 1
        system_error       = 2
        internal_error     = 3.
   
    lv_adobe_form = wa_fpformoutput-pdf.
    " Close the spool job
    CALL FUNCTION 'FP_JOB_CLOSE'
      EXCEPTIONS
        usage_error    = 1
        system_error   = 2
        internal_error = 3
        OTHERS         = 4.
    IF sy-subrc <> 0.
      " <error handling>
    ENDIF.
   
  * get element via lead selection
    lo_el_context = wd_context->get_element( ).
  * set single attribute
    lo_el_context->set_attribute(
      name =  `ADOBE_FORM`
      value = lv_adobe_form ).
   
  ENDMETHOD.

Step 4: Creating Web Dynpro ABAP Application

• Create web dynpro Application(ZOVH_WD_ADOBE) for the component. 
• Run the application
• Output