bug while creating namedWindow in a pthread

[opencv-pushbot]

Transferred from http://code.opencv.org/issues/695

|| Ömer Orkun Düztaş on 2010-11-21 13:01
|| Priority: Low
|| Affected: None
|| Category: highgui-gui
|| Tracker: Bug
|| Difficulty: None
|| PR: None
|| Platform: None / None

bug while creating namedWindow in a pthread

I'm coding a multi threaded video surveillance application. while one thread capturing the video stream, another thread is processing. when I start the my program sometimes I take an error as :

"OpenCV Error: Unspecified error (Frame window can not be created) in cvNamedWindow, file C:\User\VP\ocv\opencv\src\highgui\window_w32.cpp, line 405

This application has requested the Runtime to terminate it in an unusual way.
Please contact the application's support team for more information."

but sometimes it runs in a right way. It occurs non-demerministically and when it occur I wait half a minute and then run the program again and it runs correctly.

History

Alexander Shishkov on 2012-03-21 22:02

-   Target version deleted ()
-   Priority changed from High to Normal

Alexander Shishkov on 2012-03-25 20:37

-   Priority changed from Normal to Low

Alexander Shishkov on 2012-03-25 20:49

-   Assignee deleted (Ömer Orkun Düztaş)

Alexander Shishkov on 2012-04-05 12:48

-   Target version deleted ()

Andrey Kamaev on 2012-08-16 15:11

-   Category changed from highgui-images to highgui-gui

[vladimir-dudnik]

Anyone else has meet the same problem? Seems we should close this outdated issue as there are no clear and direct reproducer.

[alalek]

Some platforms doesn't work with UI properly from non-main threads. So this can't be fixed in OpenCV.
It is better to avoid UI interaction outside of main thread.