Set NoDataBehaviors of a subreports.

rbuser

Hi all,
can i set the NoDataBehaviors of a subreport in the rap environment ?

I have created a Pass-Through function, but when there is no data, the
subreport is never printed .

Thanks in advance.

Massimo.

nardmoseley

1. If the subreport is traversing the detail pipeline of a master/detail
relationship then you need to also set the detail datapipeline
SkipWhenNoRecords property to False. If you are using DADE to link
DataViews, you can do this by double clicking on the visual link to display
the link dialog. There is an option at the bottom.

2. If after trying number 1 above, you still have an issue, then first try
it in Delphi code. You may need to set the NoDataBehaviors before the report
starts printing.



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

rbuser

Thanks for the answer Nard.

I have done some checks on SkipWhenNoRecords property and this is correctly
set to false.

After this, i I'm not able to set the noDataBehaviors in delphi code,
becaouse my reports are stored in a database and i load dynamically at
runt-time.

In rap i call my Pass-Through function in the beforeprint event of the
report passing the sub report as:

Procedure ReportBeforePrint;
begin
PrintNoData(subreport1);

end;

My Pass-Through have this delphi code:

procedure TPrintNoData.ExecuteFunction(aParams: TraParamList);
var
IntReport : tPpreport;
begin
GetParamValue(0, IntReport);

IntReport.NoDataBehaviors := [ndBlankReport];

end;

When i debug the delphi code, the intreport nodatabehaviors is corretly set.

Do you have some advice to solve this problem ?

Thanks in advance.

Massimo.

nardmoseley

My suggestion to create a Delphi code example was an attempt to break down
the problem into incremental steps. What I meant was to create a simple
example report using DBDemos and try to implement a simple minimal example
that set the NoDataBehaviors property of a child report.

Your RAP pass-through function is not correct. A TppSubreport is not a
descendant of TppReport.

A subreport is comprised of two objects:

1. SubReport control
The subreport control is added to a band of the
'parent' report. It has properties such as
ShiftRelativeTo, PrintBehavior, etc.
In the Report Designer, the subreport is drawn
as a rectangle.


2. ChildReport
The child report is a descendant of CustomReport and has
most of the same properties as a standard Report.
The child report has a separate layout workspace in the report
designer that is accessible by selecting the tabs at the bottom
of the designer.



The signature of your pass thru function should look like this:

procedure PrintNoData(aCustomReport: TppCustomReport);

The call to the function should look like

PrintNoData(Subreport.Report);


Inside the pass-through function you need

uses
ppClasss, ppTypes;

var
lReport: TppCustomReport;
begin
GetParamValue(0, lReport);

lReport.NoDataBehaviors := [ndBlankReport];

end;





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

rbuser

Thank you very much Nard, I have change my pass-through function following
your advice and now all works fine.

Thanks.

Massimo