Viewer freezes afte [Alt] followed by [Key] hit repeatedly

PDF-XChange Viewer SDK for Developer's
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DSSavant
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Viewer freezes afte [Alt] followed by [Key] hit repeatedly

Post by DSSavant »

With the most recent viewer installed on several different machines running both 32/64 bit and using different OS's, if you load a PDF into an application that hosts the PDF Viewer and then repeatedly press Alt and then T (or just about any key), the viewer will lock up after 3 to 10 very fast key repetitions. The faster you press the two keys the quicker it freezes. Freezes is defined as taking zero CPU, not allowing any focus to any control, only allowing painting.

Please refer to the following video:

http://www.youtube.com/watch?v=8PvvKx57kTg

I cannot reproduce when running the viewer as a stand alone application since the Alt key will go directly to the Menus. Rather, you must reproduce it in an application without menus. In my case, I have used the Full Demo application packaged in the SDK.

Let me know if you need more.
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Tracker Supp-Stefan
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by Tracker Supp-Stefan »

Hello DSSavant,

I have asked our devs to check this and try to reproduce it, and if successful we will see whether the problem is with just how the sample is written or with the AX itself.

Best,
Stefan
DSSavant
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by DSSavant »

For what it is worth, I have reproduced it in my application as well. If it is a problem with the demo then it will be a problem with how to embed the viewer control in a WinForm. Let me know if there is a code work around I need to implement.

Thanks.
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by Paul - Tracker Supp »

Thanks for the added detail DSSavant - I'll be sure to let the devs know as they work on this.

:-)
Best regards

Paul O'Rorke
Tracker Support North America
http://www.tracker-software.com
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by Tracker Supp-Stefan »

Hello DSSavant,

Our developers confirmed the problem, and asked me to create a ticket for it:
#1298: Viewer freezes afte [Alt] followed by [Key] hit repeatedly
So that we could all follow up on it's status.

We will update the topic here in the forums when there is any further info.

Best,
Stefan
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by Tracker Supp-Stefan »

Hi DSSavant,

this case is now resolved. The fix will be in build 200 - expected late next week.

Best,
Stefan
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by DSSavant »

Thanks, good to know.
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by schmoli »

Unfortunately I just ran into this problem, or something EXTREMELY similar to it in Version 201.

it is easily reproducible using the View.exe example application that ships with 201.

Steps to reproduce:
1) Open an interactive PDF form (I can supply a simple one, or just use this):
http://help.adobe.com/en_US/Acrobat/9.0 ... nabled.pdf
2) Place the cursor focus in the "Name" field (top left editable form field)
3) Type the letter "a"
4) Press and release the ALT key (either left or right).

**** The application is now locked. ****
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by Tracker Supp-Stefan »

Hi schmoli,

I just tried that with the C# full demo project - and was unable to make the Viewer AX or the sample application halt in any way. Please make sure that the version of the Viewer AX that does get loaded in your application is indee build 201 from 18 Apr and everything should be fine.

Best,
Stefan
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by schmoli »

Ok, I've installed the 201 SDK to a fresh Windows Server 2003 32-bit VM, so I know the version I'm installing is the only version.

The absolute first thing I noticed was while I also have version 201 from April 18th, it's built at a different time.
The SDK I am using was directly downloaded from your website yesterday. (I have been reproducing it with the version of 201 we have had for some time, but to be 100% sure I wanted to use the latest version.

My Version : April 18 2012;19:12:42
Your Version: April 18 2012;19:19:08

Here are two videos, one with the c# demo app, the other with the c++ demo app, both clearly showing the version and installed on a completely clean VM that has never seen your software on it before, using the PDF I downloaded directly from Adobe, but I of course can supply any number of other PDF Forms that this appears to occur on. Notice in the videos that shortly after typing in the box, I press the ALT key and the selection box around the form field immediately stops moving, then I start clicking around the window until the "(Not Responding)" message appears on the title screen.

Version Image:
Image
c# demo video:
http://youtu.be/WowLqObuI0Q
c++ demo video:
http://youtu.be/R3AbhEjQhuc
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by schmoli »

Just bumping this to hopefully see some info.
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by Vasyl-Tracker Dev Team »

Hi, schmoli.

The problem has been reproduced and will be fixed in the next build. The reason: our pdfviewer COM-server received the WM_SYSKEYUP, then passed it to to default window procedure (DefWindowProc), but in embedded mode(on the developer's form) this default procedure causes the strange deadlock... May be here is unknown "misunderstanding" between process of our com-server (PDFXCview.exe) and client's process. We will investigate and fix it..

Best
Regards.
Vasyl Yaremyn
Tracker Software Products
Project Developer

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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by schmoli »

Great, thanks! just in time to calm me before a vacation, looking forward to it.
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by John - Tracker Supp »

;)
If posting files to this forum - you must archive the files to a ZIP, RAR or 7z file or they will not be uploaded - thank you.

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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by Paul - Tracker Supp »

Hi schmoli,


We have addressed this issue in the last build. Can you update and confirm this works at your end please?

regards
Best regards

Paul O'Rorke
Tracker Support North America
http://www.tracker-software.com
panda
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by panda »

Sadly to say, I encountered such problem almost in every release of PDF-XChange Viewer for recent one or two years. Even more severe than the original poster, once I leave the viewer in the background longer than about one minute, it definitely can't be taken back to active. That is, it just appears to be frozen. However, it can be closed by right-clicking its corresponding icon in the taskbar and clicking "Close window".

Please, fix this long-lasting problem for the great software (without the problem, the software will be even greater).

My version is 2.5 Build 210.0 (Feb 25, 2013; 15:35:42). And my OS is Windows 7 Ultimate, x64.

Thank you for your effort all the time.
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Re: Viewer freezes afte [Alt] followed by [Key] hit repeated

Post by Paul - Tracker Supp »

Hi panda,

thanks for the post. I've passed this on to the development team to see what they think we should do about this. The PDF-Xchange Editor is soon to replace the Viewer. Can you tell me if you have the same experience using the Editor?

https://www.pdf-xchange.com/product/downloads
Best regards

Paul O'Rorke
Tracker Support North America
http://www.tracker-software.com
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