ppReport Template question

rbuser

Hello,

I have a ppreport and ppdesigner components on a form. I allow the user to
modify the built-in report and save it as a file. All works ok here. I set
the template.filename property and use the LoadFromFile so the user's custom
report is loaded the next time they run the report. However, I would like
to give the user the option to go back to the default report. I have tried
clearing the template.filename property, with partial success. If the
application is closed and re-started it works ok but if the application is
not closed and restarted the original built-in report is not reloaded. What
am I missing here? Any help is appreciated.

Thanks in advance!
Dan S.

rbuser

Hi Dan,

the initial report is a resource of the application and red upon form
creation. You have to recreate the form if you want the built-in report.
I prefer having all reports as file (or record) and not inside the
application.
You can create a default report as file like the user's reports, or you can
save the built-in report as file or stream before loading the user's one.

regards,
Chris Ueberall;

Dan S. schrieb in im Newsbeitrag:
8EAE82296ACCD311A039005004E0CAC004D6EE@DMSERVER...
to
set
custom
tried
What

rbuser

Hi Chris,

Thanks for your help! I'm not sure how to save the template to a stream. I
tried creating stream variables and setting them but that that did not work.
Do you have a small piece of sample code to clarify how this is done?

Thanks in advance
Dan S.

rbuser

Hi Dan,

I
work.

from scratch ...

var
memStream : TMemoryStream;

begin
memStream.Create;

try
myReport.Template.SaveToStream(memStream);

myReport.Template.LoadFromFile;

// doing something with the layout ...

memStream.Position := 0;
myReport.Template.LoadFromStream(memStream);
finally
memStream.Free;
end;

(see Help and Demos, streams are essential but easy and very robust).

regards,
Chris Ueberall;

rbuser

Hi Chris,

I Tried following your example but the program is producing an access
violation when the SaveToStream command is being performed. Any clues on
this?

Thanks in advance and I appreciate your help!
Dan S.

rbuser

Hi Dan,

Sorry, but I'm an idiot!

memStream.Create;

should be

memStream := TMemoryStream.Create;

You didn't see the compiler's warning?

regards,
Chris Ueberall;

rbuser

Hi Chris,

That was it! Thank you for all your help. No I did not notice any compiler
errors, just an access violation when running the program.

Thanks again!
Dan S.

rbuser

Hi Dan,


not an error but a warning about the missing initialization, I recommend the
use of the project.compiler options 'Show Warnings' and 'Show Hints'.

Cheers,
Chris Ueberall;