@vicky_mac said in close(int fd) not recognized in QT both fcntl.h and unistd.h are included: I am getting the same error even after MainWindow::close(fd) Both @KroMignon and I said from the start and multiple times to try ::close(fd);. Same with ::open(). How much clearer than that can one be? If you want to be "safe", every single C (not C++) function you want to use should be ::function().

@comarius glad you found a solution, and thanks for sharing it. Please don't forget to mark your post as solved!

Hi I dont know the answer but i was wondering if QWidgets or QML ?

Olá, Está usando o QML? Se sim dê uma olhada no tipo Drawer (https://doc.qt.io/qt-5/qml-qtquick-controls2-drawer.html). Deve fazer o que deseja.

@Melie Thank you, I apologize for the time spent, I did not think that at least someone will answer. I will stay on 4.7.2 until there are adequate solutions. If that is important for you, plesse report it on bugreports.qt.io Otherwise it will stay like this forever. Regards

@wraitii Thanks for information! You've probably meant libstdc++ and libc++, because libc is kinda different thing