Error "Canvas does not allow drawing" printing to PDF with EmbedFontOption

rbuser

Hi,

the error "Canvas does not allow drawing" occurs printing to PDF only
with EmbedFontOption and (so it seems) producing larger files with more
than 500 pages.

Here is a small snippet of code:

procedure ExportToPDF(const aFilename: string);
begin
ppReport1.AllowPrintToFile := True;
ppReport1.ShowPrintDialog := False;
ppReport1.ShowCancelDialog := False;
ppReport1.DeviceType := dtPDF;
ppReport1.TextFileName := aFilename;
ppReport1.PDFSettings.EmbedFontOptions := [efAllFonts];
ppReport1.Print;
end;

Method ppReport1.Print fires the exception. After this an operating
system error is displayed with the message

"Access violation at address 77048E19 in module 'ntdll.dll'. Write of
address 00000014."

and sometimes follows the error message

"Runtime error 216 at 0040918A".

Without the EmbedFontOptions assignment the reportbuilder works fine!

This behaviour is reproduceable on several operating systems e.g.
Windows Server 2008 R2 and Windows 7 Professional.
What can I do?

Best regards

Michael

--
ReportBuilder Enterprise Edition Version 15.0 Build 201
Delphi XE4 Professional

nicocizik

Hi Michael,

Does this happen with every report you export with EmbedFontOptions set
to AllFonts? Is there a certain font causing the issue? Which fonts
are you using inside your report.

When embedding all fonts, your file size will increase due to the fact
that you are embedding the entire font file inside the resulting PDF file.

rbuser

Hi Nico,

yes, this happens with every report exporting PDF with EmbedFontOptions.
I've reduced the resultset of the database query of a little test
report. So I got a correct PDF file with a few pages. Here are the used
fonts:

Arial (Embedded)
Type: TrueType
Coding: Ansi

Arial,Bold (Embedded)
Type: TrueType
Coding: Ansi

Arial,Italic (Embedded)
Type: TrueType
Coding: Ansi

The original resultset causes more pages, and the mentioned error occurs.

Yes I know, embedding fonts will increase the file size. Here are some
statistics about recordcount, pagecount and filesize (pdf file of my
test report with embedded fonts):

Records Pages Filesize [Bytes]
1000 18 1287932
2000 36 1405363
3000 53 1522339
4000 71 1639591
5000 ...Exception...

Any ideas?
Thanks in advance.

Michael




Am 28.08.2013 18:31, schrieb Nico Cizik (Digital Metaphors):

nicocizik

Hi Michael,

Based on your description this sounds like a memory or resource leak of
some kind (either inside your application or ReportBuilder).

Try running your application with a memory manager such as FastMM and
see if a leak is present. If not, try to create a simple example I can
run here and send it to support@digital-metaphors.com in .zip format.