A class that inherits qdialog from Raspberry Pi OS is popped up. The popped up widget has the focus, and the controls of other widgets cannot be selected. The problem is that when I click on another control, the popup widget flickers. It seems to be a problem with focus shift. There was no problem when running on Linux OS, and it worked well on Windows as well. ui.setupUi(this); this->setWindowFlags( Qt::WindowStaysOnTopHint | Qt::FramelessWindowHint); =================== if (!m_wSTCMenu->isActiveWindow()) { QPoint position(this->ui.frm_Bottom->geometry().x(), this->ui.frm_Bottom->geometry().top() - m_wSTCMenu->size().height()); position = mapToGlobal(position); m_wSTCMenu->move(position); m_wSTCMenu->exec(); }

@ IknowQT I think this is the behaviour of your window manager, not Qt. Can you test with other, non-Qt application, with a modal dialog?

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Blinking of pop-up widgets on Raspberry OS

Unsolved General and Desktop

21 Posts 2 Posters 3.5k Views

J jsulm

@IknowQT No. I did not say anything about a different OS version. I only suggested to test with another desktop environment (window manager). On Linux there are many different desktop environments...
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IknowQT

wrote on last edited by

#21

@jsulm

Even after changing the window manager to openbox, the flickering phenomenon appears.

*raspberry board version
pi4 model b
*raspberry os version
buster 5.10.75-v71+

Are there any window managers you can recommend for my development environment?
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