@jsulm yes, I tried launching it this way but it didn't resolve the issue - the error is same. Thanks for suggestion though :)

@tomasz3dk Thanks for the help I did get this working.

Hi,

GStreamer in OpenCV ? Shouldn't you rather post this question on either or maybe both of their forum ?

@hflw I continue on ur thread that u've
created https://forum.qt.io/topic/75316/qt5-8-for-arm-could-not-open-egl-display

@rickY79 Any of those versions should work if you have the tool chain

@VincentB said:

Sorry but I'm not sure to find where to find this stack window .. (I'm using qtcreator 3.6.0)

see this.

@jsulm
Ok, i will makes progress goes on.
Thank you very much.
Best Regards.

@MarceloGomez my skype is nostrik7180 . Can we discuss about your project ?

4.7 ? Then you will have to take a look at the Qt Mobility module.

If you are locked to the Qt 4 series, please upgrade to at least 4.8.7. If not locked then consider using Qt 5.6.0 which just got released and is LTS.

Fine, Thanks.

I finally got to solve this by myself. I only had to add 'libqgfxtransformed.so' to my target's /usr/lib/qtopia/plugins/gfxdrivers folder. I then ran my app using the '-qws -display transformed:rot90' switch and I got my rotation done!