Help looking at a Graphic field.

rbuser

Delphi7 and RB Enterprise10.07 build 2.

I'm running a report against a Paradox table and one of the fields is of
type "Graphic". This holds a users picture.

I've been asked to modify the report so that if this field is empty (no
picture), I should show some text to indicate that no picture is present.

Is it possible to do this ? If so, can you give me some tips ? At the moment
I'm using a "Calc" field but am not sure what code to use to see if it
contains data.

Ian

nicocizik

Hi Ian,

If you are in Delphi, you can simply check the field value and if it is
Null, hide the picture and show the text. In Rap, you can use the following
method...

----------------------------------------------
Tech Tip: RAP: Checking for Null Data Values
----------------------------------------------

The DataPipeline.FieldObjects[] array property provides access to the
TppField objects. TppField has an IsNull boolean property.

The notation is DataPipeline.FieldObjects['FieldName'].IsNull

example:

if Customer.FieldObjects['Addr1'].IsNull then
ShowMessage('field value is null');


--
Regards,

Nico Cizik
Digital Metaphors
http://www.digital-metaphors.com

rbuser

Thanks Nico, That code snippet was exactly what I needed. My report now
shows the data correctly.