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Hi, I have the problem that the windows in which I create a trackbar are simply not showing and keystrokes are not registered by waitKey. An example code would be the one from the tutorial (http://opencv.itseez.com/2.4/doc/tutorials/highgui/trackbar/trackbar.html#adding-trackbars), although I have tried many codes that should work but won't when I compile and execute them. If I remove the trackbar from the window it shows again and everything works. I am using Xubuntu and C++.

Thank you!

Hi, I have the problem that the windows in which I create a trackbar are simply not showing and keystrokes are not registered by waitKey. An example code would be the one from the tutorial (http://opencv.itseez.com/2.4/doc/tutorials/highgui/trackbar/trackbar.html#adding-trackbars), although I have tried many codes that should work but won't when I compile and execute them. If I remove the trackbar from the window it shows again and everything works. I am using Xubuntu and C++.

Thank you!