Blank window using two screens

ivanicy

Hello!!

This is a little strange issue. I am using two screens, and I have an application that opens different windows.

One of these windows, has a little problem. These are the steps for reproduce the issue:

Open the window.
Move the window to the second screen.
Close the window.
Open the window again. The window appears blank and when I click the area in which there is a widget, the window shows normal again.

Could you help me with this??

Thank you very much!

Christian Ehrlicher

Which Qt version do you use? Can you please provide a minimal, compilable example to reproduce the problem / we can see what you're actually doing?

ivanicy

I found a solution:

Use this code in the part where you want to show the window:

if (QApplication::desktop()->screenCount() > 1) {
    myWindow->setGeometry(
        QStyle::alignedRect(Qt::LeftToRight, 
                            Qt::AlignCenter, 
                            myWindow->size(), 
                            QApplication::desktop()->availableGeometry(0)));
}
myWindow->show();

This solves my problem