Bug 427953

Summary:	Unique instance and open in tabs ignored
Product:	[Applications] okular	Reporter:	okbug <okularbugreport>
Component:	general	Assignee:	Okular developers <okular-devel>
Status:	REPORTED ---
Severity:	normal	CC:	aacid, andresbs2000, christoph, gheoan, jean.fernandes, kde-windows, kewcomet, msafhang, nahamaharnab, nate, nonobio, paralel.nonrecurently, sdutta377, stafa, vonreth, witchhunterpro
Priority:	NOR
Version:	23.08.1
Target Milestone:	---
Platform:	Microsoft Windows
OS:	Microsoft Windows
Latest Commit:		Version Fixed In:
Sentry Crash Report:

Description okbug 2020-10-19 05:49:00 UTC

SUMMARY


STEPS TO REPRODUCE
1. Set "Open new files in tabs" in Settings
2. Add a registry "Parameter" key in [HKEY_CLASSES_ROOT\AppXhptkdxysnj90q56w5z3sx7d7a55gse06\Shell\open] with value '--unique "%1"'

OBSERVED RESULT

Each new file gets opened in a new window (with a new process).
Passing the --unique argument show a dialog every time saying something like 'Another unique instance is running, this won't be the unique instance...' although there are no Okular processes running on the system.


EXPECTED RESULT

Open all (PDF) files in tabs of a single program instance.

SOFTWARE/OS VERSIONS
Windows: 10 build 2004
macOS: 
Linux/KDE Plasma: 
(available in About System)
KDE Plasma Version: 
KDE Frameworks Version: 
Qt Version: 

ADDITIONAL INFORMATION

Comment 1 Albert Astals Cid 2020-11-01 18:36:32 UTC

*** Bug 428568 has been marked as a duplicate of this bug. ***

Comment 2 gheoan 2020-11-02 20:07:33 UTC

This can also be reproduced by running okular --unique from the command line, without any registry edit.

Comment 3 Albert Astals Cid 2021-07-06 22:38:47 UTC

*** Bug 439548 has been marked as a duplicate of this bug. ***

Comment 4 Hannah von Reth 2021-07-07 11:14:36 UTC

I don't think we ship dbus, so thats probably the cause.

Comment 5 Christoph Cullmann 2021-07-07 18:18:26 UTC

Yes, there is no working dbus there.
Kate uses QtSingleApplication for that on Windows, but that is hacky, too.
I could try to improve the error message by checking better if some dbus session bus is around at all.

Comment 6 Albert Astals Cid 2022-08-05 13:43:55 UTC

*** Bug 457520 has been marked as a duplicate of this bug. ***

Comment 7 kewcomet 2023-03-02 00:15:24 UTC

Having the same issue.
Have enabled: "Open new files in tabs" but the setting is being ignored

Comment 8 Jean Carlos Fernandes 2024-09-25 20:03:00 UTC

I still have same issue, hopes they fix it soon.

Comment 9 Christoph Cullmann 2024-09-25 20:42:29 UTC

One needs to implement that feature for Windows, so far I don't think somebody is working on that.

Comment 10 nonobio 2024-10-26 08:50:37 UTC

Hi,

I’ve been using Okular for a few weeks. I like the application, but I also noticed this annoying bug.

Thanks for the app by the way :)

Comment 11 Michal 2025-02-10 17:11:12 UTC

The app is great, but this bug limits its Windows use significantly. After more than 4 years since reporting, I don't assume that it is going to be resolved anytime soon. But in case it does I believe it can attract many more Windows power users. 😊

Comment 12 Christoph Cullmann 2025-02-10 18:45:25 UTC

Somebody must step up to do it, Kate has own code for that, perhaps that could be shared.
In any case that is something that would be a nice contribution.