Hide Group without any visible subreport

rbuser

Hi,

I have a report with a group and within the group there is a subreport.

Depending on the results of the subreport I hide the subreport band using
the visibly:= False.
However I want to hide the group header as well if there is no subreports
visible in the group.

Was thinking of a variable counter in each subreport "OnnCalc" event and
then set the Header band visibilty to false if the "counter" was zero, but
I can't get it to work properly.

Any ideas or is there any built in functionality?

nardmoseley

Sounds like a timing issue. You need to use the GroupHeader.BeforePrint
event to set the GroupHeader.Visible property.

Try creating a summary query that summarizes the counter info for each
group. Then use this information to set the GroupHeader.Visible property.

myGroupHeaderVisible := mySummaryPipeline['SumCounter'] > 0;


--
Nard Moseley
Digital Metaphors
http://www.digital-metaphors.com

rbuser

Nard,

Thanks,
I got it to work in the Report Builder IDE but when I use exactly the same
report in my app and load it from the disk I get en error

"Unable to load BeforePrint code for GroupFooterBand3, no object with this
name found"
.
Another strange thing I've noticed is, if I add the timing on the variable
to reset on the report header vs have it traversal gives a twice slower
printout (on the screen) of the report.

/Ronny

nardmoseley

Are you using Delphi event-handlers or using RB's Calc workspace to code RAP
event-handler?

If you implement Delphi event-handlers for the report, then these must be
published methods of the Form/DataModule that owns the report.

RAP code is saved as part of the report definition.

If you have more than one TppReport component on a form/datamodule then you
may be encountering naming conflicts in which you load a report that
contains elements with the same name as another report. Thus, the elements
get renamed upon loading. In Delphi, the component names must be unique
within a specified Owner.



--
Nard Moseley
Digital Metaphors
http://www.digital-metaphors.com

rbuser

Nard,

Thanks, I use using RB's Calc workspace but I had two TppReport component
on the same form.
Sometimes when I doubleclick on the TppReport component to make changes or
preview I end up with a new TppReport component exact on top of the
original one and it is mission impossible to discover this..

Why the new TppReport component.

/Ronny

nardmoseley

I recommend that you use one TppReport component per form/datamodule - this
will simplify things greatly. And since you are loading templates, it is
really all that you need.

Load each report and set TppReport.SaveAsTemplate to False. Do not use this
property unless you are building an end-user application.


--
Nard Moseley
Digital Metaphors
http://www.digital-metaphors.com