System Information

Ubuntu 22.04.4 LTS x64
qt 6.7.2 qt widgets application
Qt Creator 14.0.1 Based on Qt 6.7.2 (GCC 10.3.1 20210422 (Red Hat 10.3.1-1), x86_64)

Detailed description

when I use cv::imshow("Original Image", cvImg); in qt 6 wigdet app.
The app is built ok, But I can see the threed in the monitor,but it was no any window showed!
when i remarked imshow clause,the window will show correctly!

Steps to reproduce

//qt 6 qt widgets application
cv::Mat cvImg = cv::imread("/home/devgis/Pictures/gyy.jpeg");// 使用OpenCV加载图片
cv::imshow("Original Image", cvImg);

Issue submission checklist

• I report the issue, it's not a question
• I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution
• I updated to the latest OpenCV version and the issue is still there
• There is reproducer code and related data files (videos, images, onnx, etc)