I am trying to start learning ReportListener. I found the following sample code:

* Example, by Garrett Fitzgerald
* http://blog.donnael.com/2004/06/vfp9-report-sample/

CREATE CURSOR crsrFontList ( ;
 cFont char(32))

llGotFonts = AFONT(laFonts)
FOR i = 1 TO ALEN(laFonts)
 INSERT INTO crsrFontList VALUES (laFonts(i))
ENDFOR

CREATE REPORT fontList FROM DBF("crsrFontList")

loListen = CREATEOBJECT("myFontListener")

REPORT FORM fontList PREVIEW OBJECT loListen 

DEFINE CLASS myFontListener as ReportListener
 ListenerType = 1

 PROCEDURE EvaluateContents
  LPARAMETERS nFrxRecno, oObjProperties

  oObjProperties.FontName = ALLTRIM(cFont)
  oObjProperties.Reload = .T.
 ENDPROC
ENDDEFINE

Now, it is easy to see how an object's .FontName is dynamically changed, and looking at the help file it should also be easy to change additional properties, such as .FontSize or color.

Now my question is, how do I distinguish different objects on a report? This sample report happens to have only one object; but in practice, I may want one particular field, and not all fields, to be bold or red if an amount is negative, for example.

A parameter is passed that indicates the field in the FRX file, but this doesn't seem very practical; it might change if objects are added for example.

TIA,

Hilmar.