GDI Error

rbuser

Using:
RAD Studio Delphi 2010
XP Professional
DevExpress 13.1.2
Report Builder 14.06 Build 249
KbmMemTable

At times I'm getting the following error: "Invalid operation in GDI+ (Code
3)"... followed by "Canvas does not allow drawing". Sometimes I can reboot
the system and the report will print correctly... or sometimes I choose a
different dataset (different records to be reported) and it will print OK.
Anyone have any idea what the problem might be?

Joe Hutchins

nicocizik

Hi Joe,

We have not seen this error before. A quick search of the error you are
getting on Google pulls up numerous issues related to DevExpress. As a
test, try removing DevExpress from your test project and see if you
still get the error.

rbuser

It is definitely a problem between DevExpress and Report Builder...
separate, they both work as expected; however, when I'm trying to print from
a form with their cxGrid components displaying data... and run a report
(from another mem table - not displayed in the grid) I get the error... if I
make the grid.visible = false and then run the report there is no problem;
however, if I try to make the grid "visible" after the report has been
closed the grid doesn't display properly. Has anyone else encountered
anything like this?

Joe Hutchins

nardmoseley

Give this a try...

RB 14 introduces a new scrollable page preview, which generates pages in a
background thread. This can cause threading issues in some cases,
particularly if visual controls are connected to the same datasets as
reports. You can set Report.PreviewFormSettings.SinglePageOnly to True to
use the old single page preview. If you are loading templates from a .rtm
files or a database, use the Report.Template.OnLoadEnd event to set this
property.
If you are using a separate TppViewer object, it has a SinglePageOnly
property.



Best regards,

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

rbuser

Thanks, I really appreciate your help. That appears to fix the problem...