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Thanks Max and Tim for replying back - That worked great.
Rakesh
-----Original Message-----
From: Max Wyss
Sent: Saturday, March 06, 2004 6:25 AM
To: [EMAIL PROTECTED]
Cc: Pdf Work
Subject: Re: [PDF-Forms] Suppressing zeros from printing.
<< File: ATT00000.txt; charset = WINDOWS-1252 >>
The form is indeed right, assuming that you have no illegal calculations when all
fields are empty. When you format fields, you will get this effect.
One thing you have to consider before you start making adjustments to your form is
whether 0 is indeed a legal result. With that, I mean whether a legitimate calculation
using filled in fields can lead to 0, and whether these numbers are intermediate
results, which we use in further calculations. If all this is not the case, we can be
a little bit less careful with the methods to suppress these zeroes...
Let's assume that all the mentioned things are not the case, one approach has already
been mentioned in the list. You simply evaluate the result and if it is zero, you set
the field value to blank.
However, this may not be correct in some cases. I don't know if it applies for you,
but as you have done some serious analysis of the
case, you would know. One of the main approaches for the case that you may have
illegal results, or use the values for further calculations, is to not do the
calculations until all the entry values (and therefore also your calculations) are
valid. This would give the following structure:
if (this.getField("myField").value != "" &&
this.getField("anotherField").value != "") {
// we have all valid input
doCalculations() ;
} else {
// not all valid input
this.getField("result").value = "" ;
}
Now, if we need the results for further calculations, but still want to suppress them,
we also could switch to controlling the display of the fields, and use the Format
event, which would leave the field value untouched. We might need to use the
util.printf() method, in order to create the formatting we want, as in this case, we
no longer can use the shortcuts to set the format of the fields.
Hope, this can help.
Max Wyss
PRODOK Engineering
Low Paper workflows, Smart documents, PDF forms
CH-8906 Bonstetten, Switzerland
Fax: +41 1 700 20 37
or +1 815 425 6566
e-mail: mailto:[EMAIL PROTECTED]
http://www.prodok.com
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