In my Qt application, I have couple of QtWidgets which are floating. I want to know when QtWidget is dragged to another screen So that I can resize content within according to new screen DPI.
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What about querying `QDesktopWidget::screenNumber()` periodically? – vahancho Nov 20 '20 at 13:55
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did you ever find a solution to this? – codeling Jul 11 '22 at 12:20
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Listened to event void QWindow::screenChanged(QScreen *screen) – living on edge Aug 20 '23 at 14:04
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Connect the primaryScreenChanged signal from your QGuiApplication to slots in your widgets.
Edited to add: On reflection, this probably doesn't do what you want -- it signals when the application changes screen, not the widget.
TonyK
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One Query, My application has lot of QDialogs, so this signal is emitted. only one Qdialog is moved other screen not main application window. – living on edge Nov 23 '20 at 03:12
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I have DISPLAY1 and DISPLAY2, DISPLAY1 is primary, when DISPLAY1 HDMI is plug out, after primaryScreenChanged signal, MainWindow is shown on secondary screen DISPLAY2, but MainWindow->screen() is still DISPLAY1. – Acewind Apr 06 '23 at 07:27