How to Launch a PDF on Webgui

Question

Dear Experts:
What I am trying to do is to convert PO smartform to PDF file and then launch the PDF file in a new window on Webgui.
I am using function BBP_OUTUT_PO_PREVIEW_SMART, in which the function BBP_ALEWEB_DOWNLOAD is invoked.
This program has been putted on Webgui. But when i execute it on webgui, it's keeping on running status, no error message, no new PDF window pop-up.
I searched the thread below, but not answered.
Re: Launching a PDF through ITS.
Please tell me the detail about how can a launch PDF on Webgui.
Many Thanks
Best Regards
Attached my test code:
REPORT  ZSRPOCHR_CR001_POPRINT.
*INCLUDE LBBP_PO_APPF35.
data: gv_objectid type CRMT_OBJECT_ID_DB.
data: cs_context TYPE bbps_po_ui_global,
      ev_abort   TYPE flag.
start-of-selection.
  cs_context-header_guid = '4818123C61873D53E10000000A0A1CC6'.
perform preview_po in program SAPLBBP_PO_APP if found
                    changing cs_context
                             ev_abort.
  perform fm_print_po.
*&      Form  FM_PRINT_PO
FORM FM_PRINT_PO .
  DATA: ES_PDF     TYPE     XSTRING,
  EV_DOC_DESCR     TYPE     SO_OBJ_DES.
  DATA: lv_smartform TYPE tdsfname.
  LV_SMARTFORM = 'BBP_PO'.
  CALL FUNCTION 'BBP_OUTPUT_PO_PREVIEW_PREPARE'
    EXPORTING
      ip_medium          = 'PRN'
    IMPORTING
      ep_smartform       = lv_smartform
    EXCEPTIONS
      no_triggertypecoll = 1
      no_mediacoll       = 2
      no_medium          = 3
      no_media_map       = 4
      OTHERS             = 5.
  CALL FUNCTION 'BBP_OUTPUT_PO_PREVIEW_SMART'
    EXPORTING
      IV_GUID                  = '4818123C61873D53E10000000A0A1CC6'
      IV_SMARTFORM             = 'BBP_PO'
    IV_LOCAL                 = 'X'
     IV_SCENARIO              = 'PREVIEW'
IMPORTING
     ES_PDF                   = ES_PDF
     EV_DOC_DESCR             = EV_DOC_DESCR
   EXCEPTIONS
     NO_SMARTFORM             = 1
     NO_PARTNER               = 2
     NO_DATA                  = 3
     PSF_ERROR                = 4
     OTF_ERROR                = 5
     ITS_ERROR                = 6
     NO_PRINTER               = 7
     NO_TRIGGERTYPECOLL       = 8
     NO_MEDIACOLL             = 9
     NO_MEDIUM                = 10
     NO_MEDIA_MAP             = 11
     ARCHIV_ERROR             = 12
     OTHERS                   = 13
  IF SY-SUBRC = 0.
    MESSAGE 'Smartform preview successfully!' type 'S'.
  ELSE.
    MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
            WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
  ENDIF.
ENDFORM.                    " FM_PRINT_PO
Edited by: Xiaomei on Oct 15, 2008 5:31 AM

Answer 1

The display of Rich Media Annotations depends on the rendering software; many browsers have their own PDF display tools (Firefox, Chrome, etc) which have no support for RMAs and Flash, so your file's rendition is ultimately at the mercy of whether your consumers will install Adobe Reader, and if their browser has taken charge of the PDF file format. You can't influence that, nor can you realistically even detect it.
Making a PDF file (or any other) show a download/save prompt rather than being displayed inline is done by sending extra HTTP headers (setting a Content-Disposition entry). That requires changes on the webserver, either with direct configuration of the server (via an .htaccess file) or by delivering the PDF file through a wrapper program in PHP, ASP etc. that adds the extra headers. Nothing about the file itself will change how it's served.