OnPreviewFormCreate

rbuser

Hi!

An error raises when I try to make Print to my report:
ppReport1.OnPreviewFormCreate : Invalid Property value. And the rtm file
desn not have this event, and not does the ppReport1 object. So what is
the problem?

Thanks!
Jordi



--- posted by geoForum on http://delphi.newswhat.com

nardmoseley

----------------------------------------------
Tech Tip: Working with Report Templates
----------------------------------------------

Whenever you save a template to an .rtm file, all of the published
properties of the Report are saved. This includes all Properties
and Events that are visible in the Object Inspector. For the events,
the 'name' of the event-handler procedure is saved.

When you load an .rtm all of the properties values of the TppReport
component are set to the values that were stored to the .rtm.

If you load an .rtm that had OnStartPage assigned then it will
be re-attached - provided that the event-handler method is a published
procedure of the report's owner. The Owner is normally the form.


On the other hand, if you load an .rtm that did NOT have OnStartPage
assigned
when it was saved, you will need to programmatically assign the
event-handler.

Example:

You have a form with an event-handler for OnStartPage...

type
Form1 = class(TForm)
procedure Form1StartPageEvent(Sender: TObject);

end;


You need to attach the event-handler after loading......

myReport.Template.LoadFromFile;
myReport.OnStartPage := Form1StartPageEvent;



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--
Nard Moseley
Digital Metaphors
www.digital-metaphors.com