dockChild= QGLWidget(0x244191de020) 5.12.2 windows/Windows 10 (10.0) () QWidgetPrivate::close_helper QMainWindow(0x6b36cff6b8) QWidgetPrivate::close_helper 0 QMainWindow(0x6b36cff6b8) visible false par QWidget(0x0) WA_QuitOnClose= true QWidgetPrivate::close_helper QMainWindow(0x6b36cff6b8) continue QWidgetPrivate::close_helper QMainWindow(0x6b36cff6b8) lastWindowClosed true # 0 lastWindowClosed QWindowPrivate::maybeQuitOnLastWindowClosed QWidgetWindow(0x24421d7bf80, name="qt_dockwidget_floatbuttonWindow") topLevelWindows= (QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow")) QWindowPrivate::maybeQuitOnLastWindowClosed loop 0 QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow") Visible= false transientParent= QWindow(0x0) QWindowPrivate::maybeQuitOnLastWindowClosed QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow") continue QWindowPrivate::maybeQuitOnLastWindowClosed lastWindowClosed true # 1 lastWindowClosed QWindowPrivate::maybeQuitOnLastWindowClosed QWidgetWindow(0x24421d7c5c0, name="qt_dockwidget_closebuttonWindow") topLevelWindows= (QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow")) QWindowPrivate::maybeQuitOnLastWindowClosed loop 0 QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow") Visible= false transientParent= QWindow(0x0) QWindowPrivate::maybeQuitOnLastWindowClosed QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow") continue QWindowPrivate::maybeQuitOnLastWindowClosed lastWindowClosed true # 2 lastWindowClosed QWindowPrivate::maybeQuitOnLastWindowClosed QWidgetWindow(0x24418b53220, name="QWidgetClassWindow") topLevelWindows= (QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow")) QWindowPrivate::maybeQuitOnLastWindowClosed loop 0 QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow") Visible= false transientParent= QWindow(0x0) QWindowPrivate::maybeQuitOnLastWindowClosed QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow") continue QWindowPrivate::maybeQuitOnLastWindowClosed lastWindowClosed true # 3 lastWindowClosed QWindowPrivate::maybeQuitOnLastWindowClosed QWidgetWindow(0x24421d7b300, name="QDockWidgetClassWindow") topLevelWindows= (QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow")) QWindowPrivate::maybeQuitOnLastWindowClosed loop 0 QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow") Visible= false transientParent= QWindow(0x0) QWindowPrivate::maybeQuitOnLastWindowClosed QWidgetWindow(0x24421d7b1c0, name="QMainWindowClassWindow") continue QWindowPrivate::maybeQuitOnLastWindowClosed lastWindowClosed true # 4 lastWindowClosed