*Setup:* - two QMainWindows - "main" and "viewer" - "viewer" uses Qt3D via QWidget::createWindowContainer() - shortcut "cmd-w" (Qt::ApplicationShortcut) set up to call close() on "viewer" if it is the activeWindow() - "viewer" does not have WA_DeleteOnClose set, so the window is only hidden
*Problem:* - if I close the viewer via the shortcut and reopen it, the 3D view is fine - if I close it via the close button in the title bar (macOS or Windows) and reopen it, the 3D view is blank Any idea why my 3D view is getting killed in the second case? This may be a red-herring, but I've traced both through to QWidgetPrivate::close_helper() and each is called with a different mode. The first is called with "CloseWithEvent" and the second with "CloseWithSpontaneousEvent". Could this be a factor? I have another window which uses a QGraphicsView set up exactly the same way and it works fine, so maybe Qt3D is doing something I'm not expecting based on a CloseWithSpontaneousEvent? Thanks for any ideas/suggestions. --- Andy Maloney // https://asmaloney.com twitter ~ @asmaloney <https://twitter.com/asmaloney>
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