[Lazarus] LazReport, how to mix data from multiple datasets?

[Luca Olivetti]

El 11/1/23 a les 10:20, Luca Olivetti via lazarus ha escrit:
> El 10/1/23 a les 16:39, Luca Olivetti via lazarus ha escrit:
> 
> For the record:
> 
> in the report designer the band has a "Dataset" property and you can 
> assign to it the name of a TRfDbDataset on the form.
> I tried that previously and it didn't seem to work.
> After some painful debugging (which involved a complete rebuild of the 
> lazarus ide, don't ask me why, I'd like to know), I found out that the 
> property value, in spite of being there in the lrf file, wasn't being 
> read, but in the next debug session it was. Again, don't ask me why, but 
> now everything seems to be ok.

Ouch, that last problem was my fault: since I embed the files as 
resources, and obviously without a rebuild it wouldn't work.

Bye

> 
> Bye
> 
> 
>> Hello,
>>
>> I see that I cannot use more than one dataset in a report (actually I 
>> can, the problem is that the second dataset show always the same line, 
>> repeated for how many rows there are in the first one i.e.:
>>
>>      ds1 row1
>>      ds1 row2
>>      ds1 row3
>>
>>      ds2 row1
>>      ds2 row1
>>      ds2 row1
>> )
>>
>>
>> Previously I used two reports and combined them into a third one, i.e.:
>>
>> with CombinedReport do
>> begin
>>    reports.clear;
>>    reports.add(FirstReport);
>>    reports.add(SecondReport);
>>    ....
>> end;
>>
>>
>> The problem is that the second report starts on a new page, while I 
>> need it to stay on the same page:
>>
>>
>> *** Report header (or page header on subsequent pages)
>> --- first dataset header
>> ... first dataset data
>> --- second dataset header
>> ... second dataset data
>> **** page footer
>>
>>
>> The first dataset is supposed to occupy about half the page.
>>
>>
>> Is there a way to do that? How?
>>
>> Bye
> 

-- 
Luca Olivetti
Wetron Automation Technology http://www.wetron.es/
Tel. +34 93 5883004 (Ext.3010)  Fax +34 93 5883007