Debenu Quick PDF Library - PDF SDK Community Forum : printDocument fails

Debenu Quick PDF Library - PDF SDK Community Forum : printDocument fails http://www.quickpdf.org/forum/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Tue, 19 May 2026 11:19:13 +0000 Fri, 15 May 2009 02:35:26 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 11.01 360 www.quickpdf.org/forum/RSS_post_feed.asp?TID=1068 <![CDATA[Debenu Quick PDF Library - PDF SDK Community Forum]]> http://www.quickpdf.org/forum/forum_images/QPDF_Forum_Title.png http://www.quickpdf.org/forum/ <![CDATA[printDocument fails : Hi MrPopUp.Yes I know printername...]]> http://www.quickpdf.org/forum/printdocument-fails_topic1068_post5080.html#5080 Author: dsola
Subject: 1068
Posted: 15 May 09 at 2:35AM

Hi MrPopUp.

Yes I know printername on which I need to print so I check just target printer.

Delphi code:
procedure TBatchPrint.DoWork(........);
var
xx: integer;
printerName: string;
begin

printerName := Printer.Printers[FPrinterIndex];
// check if printer is spooling 500 times (500*.5sec= cca 4min) to avoid inifinite loop
for xx := 1 to 500 do begin
    if not Printer.Printing then
      Break;
    Sleep(500);
end;

PrintDocument(.....);
end;]]> Fri, 15 May 2009 02:35:26 +0000 http://www.quickpdf.org/forum/printdocument-fails_topic1068_post5080.html#5080 <![CDATA[printDocument fails : Good morning Dsola, Thanks for...]]> http://www.quickpdf.org/forum/printdocument-fails_topic1068_post5075.html#5075 Author: MrPopup
Subject: 1068
Posted: 14 May 09 at 3:08PM

Good morning Dsola,

Thanks for the comment. I would love to see the code/mechanism used to check the printers. I do have well over 100 printers on the server! I take it you just check the target printer?

Thank you.

Mrpopup

]]> Thu, 14 May 2009 15:08:12 +0000 http://www.quickpdf.org/forum/printdocument-fails_topic1068_post5075.html#5075 <![CDATA[printDocument fails : We found delphi workaround.You...]]> http://www.quickpdf.org/forum/printdocument-fails_topic1068_post5070.html#5070 Author: dsola
Subject: 1068
Posted: 14 May 09 at 8:09AM

We found delphi workaround.

You can't print while printer is in "spooling mode" so before we sent another PDF to print we check if printer is out of spooling mode.

]]> Thu, 14 May 2009 08:09:08 +0000 http://www.quickpdf.org/forum/printdocument-fails_topic1068_post5070.html#5070 <![CDATA[printDocument fails : We have same problem with delphi...]]> http://www.quickpdf.org/forum/printdocument-fails_topic1068_post5069.html#5069 Author: dsola
Subject: 1068
Posted: 14 May 09 at 7:19AM

We have same problem with delphi version.

Still have no solution Cry

Edited by dsola - 14 May 09 at 7:22AM]]> Thu, 14 May 2009 07:19:11 +0000 http://www.quickpdf.org/forum/printdocument-fails_topic1068_post5069.html#5069 <![CDATA[printDocument fails : Good morning forum members, Details: Version:...]]> http://www.quickpdf.org/forum/printdocument-fails_topic1068_post5003.html#5003 Author: MrPopup
Subject: 1068
Posted: 24 Apr 09 at 6:30PM

Good morning forum members,

Details:

Version: 5.22 & 7.12

Style: AxtiveX

Application: Jade (www.jadeworld.com) based - similar to VB

I have a print server application that detects pdf files that need to be printed. It validates the file and then uses the printDocument method to launch the actual printing to the specified printer.

The process works successfully if in a single ' locate pdfs run' only one pdf file is located or if the multiple files are very small (1/4 pages).

However if a number of files are located and some are large (20 to 600 pages) the seciond and subsequent printDocument commends fails with error -2147418113 (null object reference).

A seperate QuickPDF object instance is created for each printDocument.

To me it appears that while the printDocument call returns to the calling method the AcitveX/library is still in fact still busy sending the file to the print spooler. As a result the next printDocument causes a failure. This implies that the library is neither thread safe nor actually capabile of multi-user activity.

For large files, if I put in a 2 minute delay prior to issuing the next printDocument all is well however this is not a satisfactory solution. (if the network is busy 2 minutes may be insufficient etc)

Does anyone have any suggestions please.

Thank you.

Charles

]]> Fri, 24 Apr 2009 18:30:35 +0000 http://www.quickpdf.org/forum/printdocument-fails_topic1068_post5003.html#5003