# \#gtk

**URL:** https://forum.opencv.org/tag/gtk/281.md

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## [GTK failed to load module gail](https://forum.opencv.org/t/gtk-failed-to-load-module-gail/15675)

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**Author:** [@Kumar\_Utkarsh](https://forum.opencv.org/u/Kumar_Utkarsh)\
**Replies:** 0\
**Last updated:** [November 29, 2023, 8:20pm UTC](https://forum.opencv.org/t/gtk-failed-to-load-module-gail/15675 "2023-11-29T20:20:56Z")

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after running the code LD\_LIBRARY\_PATH=“$HOME/local/lib/” ./read\_img i get the error message :: Gtk-Message: 01:38:08.815: Failed to load module “gail” Gtk-Message: 01:38:08.815: Failed to load module “atk-bridge” …

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## [Imshow() throws: The function is not implemented. Rebuild the library with Windows, GTK+ 2.x or Cocoa support](https://forum.opencv.org/t/imshow-throws-the-function-is-not-implemented-rebuild-the-library-with-windows-gtk-2-x-or-cocoa-support/13259)

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**Author:** [@patil\_dushyant](https://forum.opencv.org/u/patil_dushyant)\
**Replies:** 2\
**Last updated:** [May 21, 2023, 11:39pm UTC](https://forum.opencv.org/t/imshow-throws-the-function-is-not-implemented-rebuild-the-library-with-windows-gtk-2-x-or-cocoa-support/13259 "2023-05-21T23:39:45Z")

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I have installed opencv from scratch and included opencv contrib to extra modules path. After this, I wrote basic script to read and show an image and compiled the code using cmake. The compilation was successful but wh…

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## [OpenCV's namedWindow is not implemented](https://forum.opencv.org/t/opencvs-namedwindow-is-not-implemented/9291)

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**Author:** [@oo92](https://forum.opencv.org/u/oo92)\
**Replies:** 2\
**Last updated:** [June 25, 2022, 10:43am UTC](https://forum.opencv.org/t/opencvs-namedwindow-is-not-implemented/9291 "2022-06-25T10:43:52Z")

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When I run my C++ code, I get this error: terminate called after throwing an instance of 'cv::Exception' what(): OpenCV(4.1.0) /home/me/opencv/modules/highgui/src/window.cpp:610: error: (-2:Unspecified error) The fu…

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## [Fatal error: gtk/gtkgl.h: No such file or directory](https://forum.opencv.org/t/fatal-error-gtk-gtkgl-h-no-such-file-or-directory/4326)

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**Author:** [@jiapei100](https://forum.opencv.org/u/jiapei100)\
**Replies:** 4\
**Last updated:** [July 19, 2021, 6:10pm UTC](https://forum.opencv.org/t/fatal-error-gtk-gtkgl-h-no-such-file-or-directory/4326 "2021-07-19T18:10:01Z")

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Hi, I‘m trying to build the NEWEST release OpenCV-4.5.3 today. And I happened to notice: whenever I enabled WITH\_GTK ON, I got the error: fatal error: gtk/gtkgl.h: No such file or directory Di…