Page Comparison

XFRX is able to export individual report pages as BMP, PNG, GIF and , JPEG (JPG) and EMF pictures, multiple pages can be exported to TIFF (TIF) image format.

The picture generation process is divided into two steps:

the report is generate as XFF cursor
savePicture method SavePicture method of the XFRX#DRAW class is called to generate the picture (Please see XFRX#DRAW class reference na stránce 92 for details and a complete list of parameters)

...

Code Block

language	vb
linenumbers	true

LOCAL m.loSession, m.lnRetVal
m.loSession= xfrx("XFRX#INIT")
    
   *
        * nothing is sent as the file name, so only a memory cursor is created
     
  *
        m.lnRetVal =m.loSession.SetParams(,,,,,,"XFF")                           
        If IF m.lnRetVal = 0
               m.loSession.ProcessReport("invoices")                    
              local m.loXFF,      m.lnI, m.lnJpegQuality
         *
           
   * the finalize method returns a XFRX#DRAW object reference,
               * which will be used to save the pictures
    
          *
               m.loXFF = loSession.finalize()
               LOCAL lnI, lnJpegQuality
               lnJpegQuality = 80
          m.lnJpegQuality = 80
    *
               * loXFF.pagecount contains the number of pages of the 
 
             * report that 
               * was just generated
          
    *
               * we are now going to save all pages one by one as 
     
         * separate jpeg pictures
          
    *
               FOR m.lnI = 1 TO m.loXFF.pagecount
                       m.loXFF.savePicture("page"+ALLTRIM(STR(m.lnI))+".jpg", ;
                                      "jpg",m.lnI,m.lnI,24,m.lnJpegQuality)
               ENDFOR
               =MESSAGEBOX("Pictures saved.")
        Endif ENDIF

You can generate the following picture formats: TIFF (TIF), BMP, GIF, JPEG (JPG), PNG, EMF. The TIFF supports multiple pages so the whole report gets converted to a single file. For other output formats one file per page is created - the file name is taken from the tcFilename parameter with _%PAGENO%.

The following table shows the mapping between extended parameters and the parameters of the SavePicture() method.

SetOtherParams()	SavePicture()
FROM	tnFrom
TO	tnTo
BPP	tnBpp
JPEGQUALITY	tnJPEGQuality
THUMBNAILWIDTH	tnThumbnailWidth
THUMBNAILHEIGHT	tnThumbnailHeight
PAGESPERSHEET	tnPagesPerSheet
ALLEVENODD	tnAllEvenOdd
FINDSTRING	laFindString
TRANSPARENT (boolean)	liBacgroundMode (number)

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