LoadFromFile always fails
Printed From: Debenu Quick PDF Library - PDF SDK Community Forum
Category: For Users of the Library
Forum Name: I need help - I can help
Forum Description: Problems and solutions while programming with the Debenu Quick PDF Library and Debenu PDF Viewer SDK
URL: http://www.quickpdf.org/forum/forum_posts.asp?TID=2057
Printed Date: 22 Nov 24 at 5:30PM
Software Version: Web Wiz Forums 11.01 - http://www.webwizforums.com
Topic: LoadFromFile always fails
Posted By: ibeleaf
Subject: LoadFromFile always fails
Date Posted: 28 Nov 11 at 5:11AM
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I'm attempting this with the freeware QuickPDF library version 8.12. All I'm trying do is load an existing PDF, add some text, and save it. Unfortunately, I cannot open any existing PDF. The return code is always zero. The QuickPDF object I'm initiating is good, because I can create a new document from scratch (using QPL.NewDocument), add some text, then save it perfectly. It's just loading PDFs that won't work it seems. Here's what I'm doing (in PowerBASIC):
Is this somehow crippled in the freeware version of QuickPDF?
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Replies:
Posted By: AndrewC
Date Posted: 28 Nov 11 at 12:27PM
| Are you using PowerBasic 9 or 10 ? |
Posted By: AndrewC
Date Posted: 28 Nov 11 at 12:49PM
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Can you specify the full path to the PDF as the current path may not be set to the location you expect. If QPL.LoadFromFile("f:\users\fred\downloads\sample.pdf", "") = 0 Then Andrew.
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Posted By: ibeleaf
Date Posted: 28 Nov 11 at 2:38PM
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I am using PB 9.05 for this particular project. As for PDF -- I've tried specifying the full path, but will try again. I've also tried opening 3 different PDFs now. The most current one I'm attempting to load is an empty single-page PDF created in LibreOffice Writer (via File -> Export to PDF). It *should* be a valid PDF.
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Posted By: ibeleaf
Date Posted: 29 Nov 11 at 4:14AM
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Ok, I've now tried 5 different PDFs (all from different sources), so I don't think it's the PDF file(s) at fault. I have tried with the full path, and without the full path. All my PDF viewers/editors can read these 5 PDFs fine too. I really wish "LastErrorCode" was available in the free version!
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Posted By: Ingo
Date Posted: 29 Nov 11 at 7:13AM
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Hi!
Here you'll find a sample for PowerBasic, too:
http://www.quickpdflibrary.com/samples/index.php - http://www.quickpdflibrary.com/samples/index.php
Perhaps you can adapt the syntax for the free version...
And in case the free version doesn't offer enough for your needs:
Why not use the full test-version (with a testkey) for 30 days for evaluation?
Cheers, Ingo
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Posted By: AndrewC
Date Posted: 29 Nov 11 at 1:40PM
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We will be adding LastErrorCode to the next Lite version. I will see if I can do some testing tomorrow to see what could be going on. Andrew.
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Posted By: ibeleaf
Date Posted: 30 Nov 11 at 2:02AM
Thanks Andrew, I'd appreciate that! Good news about adding LastErrorCode too. Ingo: I only need to add text to an existing PDF, so the commercial version is overkill at the moment. I may still install the trial and give that a shot if I cannot get this issue dealt with soon.
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AndrewC wrote:Posted By: AndrewC
Date Posted: 30 Nov 11 at 12:59PM
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The following C# program is running correctly with the QPL Lite I downloaded from the web page. 1. I installed QPL Lite. 2. CD "\program files (x86)\Quick PDF Library\Lite" 3. regsvr32 QuickPDFLite0812.dll 4 I started up VS 2010 and here is the code. 5. Add a Reference to the QuickPDFLite812.cs file to your project - It can be found in \Quick PDF Library\Lite\Import\CSharp LoadFromFile is returning 1 and the save PDF is opening up perfectly. using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms; using System.IO; using QuickPDFLite0812; namespace QPL_Lite { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { PDFLibrary QP = new PDFLibrary(); Directory.SetCurrentDirectory("f:\\users\\me\\downloads"); int ret = QP.LoadFromFile("timeslot.pdf", ""); QP.SaveToFile("out.pdf"); System.Diagnostics.Process.Start("out.pdf"); } } } |
Posted By: ibeleaf
Date Posted: 01 Dec 11 at 4:43AM
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I've never used C#, but I downloaded and installed Visual C# 2010 Express to give your code a try. I also unregistered and re-registered QuickPDFLite0812.dll successfully (using an administrative rights command prompt). Opened up VS 2010 Express, created a new "Windows Forms Application" project, added a button called "button1", and pasted your code verbatim to the code view. Ran the project, and it stopped with the following error: The type or namespace name 'QuickPDFLite0812' could not be found (are you missing a using directive or an assembly reference?) I'm certain QuickPDFLite0812.dll is registered properly, since in PowerBASIC I can create a PDF from scratch fine. I just can't load one and alter it.
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Posted By: AndrewC
Date Posted: 01 Dec 11 at 8:31AM
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You need to add the QuickPDFLite812.cs file to the project. It can be found in Quick PDF Library\Lite\Import\CSharp - QuickPDFLite812.cs In Solution Explorer in the right, right click on your project name (top item in the treelist) and then choose, Add, then Existing Item. It should then compile.
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Posted By: AndrewC
Date Posted: 01 Dec 11 at 8:32AM
| Can you send us a link to one of your PDF files. I can check to see if the file is loading correctly on my system. |
Posted By: ibeleaf
Date Posted: 01 Dec 11 at 6:37PM
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Andrew -- below are links for two different PDFs I've tried: http://dl.dropbox.com/u/38719496/sample.pdf - http://dl.dropbox.com/u/38719496/sample.pdf
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Posted By: ibeleaf
Date Posted: 12 Dec 11 at 7:22PM
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Guy guys -- just wondering if you had a chance to check into this any further. In the meantime, is there a different Lite version I can download and try? The download.com link for version 7.25 on your Freeware page actually goes to version 8.
Thanks!
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Posted By: AndrewC
Date Posted: 13 Dec 11 at 6:36AM
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The files are loading properly into QPL 8.xx. Have you managed to get the C# project running ? Version 8 was a major change to using Unicode strings internally but we have PowerBasic customers using the v8.xx library without problems. Have you tried the 30 day trial evaluation version ? I will see if I can find a link to the 7.25 Lite Version that you can download. Andrew.
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Posted By: ibeleaf
Date Posted: 13 Dec 11 at 12:49PM
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Sorry, I completely forgot to follow up on the C# test. I just tried again... and it worked! This must be a PowerBASIC issue then... let me check that code again and see if anything stands out.
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Posted By: ibeleaf
Date Posted: 14 Dec 11 at 2:27PM
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I'm still trying a few tests here, but nothing successful yet. Not sure if this helps -- but here's a link to the PowerBASIC include file I generated (using QuickPDFLite0812.dll): |
Posted By: ibeleaf
Date Posted: 14 Dec 11 at 3:00PM
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Stop the presses..... success!!! I went back and read over this entire thread, and noticed you mentioned unicode was introduced in version 8. I neglected to recall that in PowerBASIC, you need to explicitly use the UCODE$ function on a string in order to pass it as unicode. So I passed the filename argument to LoadFromFile() using UCODE$, and it worked!! I'm going to do some more tests, but it's looking good. I'll report back shortly with final confirmation...
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Posted By: ibeleaf
Date Posted: 14 Dec 11 at 5:34PM
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Well I have confirmed it was a missing UCODE$ call. Thanks for the attention guys, definitely appreciated! As a reference, for those of you using PowerBASIC -- be sure to UCODE$ the filename argument when passing it to LoadFromFile()!
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Posted By: AndrewC
Date Posted: 15 Dec 11 at 2:45AM
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Just to confirm - was it the UCODE$ or the UCASE$ function that fixed the problem or does it require both functions. Andrew.
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Posted By: ibeleaf
Date Posted: 15 Dec 11 at 4:34AM
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Whoops, sorry -- UCODE$ is the solution. I've corrected my earlier post to reflect this. Thanks again guys!
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