"5.10.0 windows" () geom before exec: QRect(0,0 640x480) QWindow::resize QWidgetWindow(0x22d0e44de90, name="QMessageBoxClassWindow") QSize(640, 480) CreateWindowEx: QWidgetWindow(0x22d0e44de90, name="QMessageBoxClassWindow") class="Qt5QWindowIcon" title="qtbug63661" WindowCreationData: QFlags(Dialog|MSWindowsFixedSizeDialogHint|WindowTitleHint|WindowSystemMenuHint|WindowCloseButtonHint) topLevel=true popup=false dialog=true embedded=false tool=false style=0x86c80000 WS_POPUP WS_CLIPSIBLINGS WS_CLIPCHILDREN WS_DLGFRAME WS_SYSMENU requested: QRect(1280,560 1280x960): 1306x1031+1267+502 custom margins: QMargins(0, 0, 0, 0) Qt::MSWindowsFixedSizeDialogHint QWidget::resize QMessageBox(0xd034fdfd20) QSize(126, 113) QWidgetPrivate::setGeometry_sys QMessageBox(0xd034fdfd20) 0 0 126 113 QWidget::resize QMessageBox(0xd034fdfd20) QSize(131, 113) QWidgetPrivate::setGeometry_sys QMessageBox(0xd034fdfd20) 0 0 131 113 QWindow::resize QWidgetWindow(0x22d0e44de90, name="QMessageBoxClassWindow") QSize(131, 113) > QWindowsBaseWindow::setGeometry_sys QWidgetWindow(0x22d0e44de90, name="QMessageBoxClassWindow") from QRect(1280,560 1280x960) frame: QMargins(13, 58, 13, 13) to QRect(1280,560 262x226) new frame: QRect(1267,502 288x297) < QWindowsBaseWindow::setGeometry_sys QWidgetWindow(0x22d0e44de90, name="QMessageBoxClassWindow") resulting true QRect(1280,560 262x226) QDialog::adjustPosition QPoint(889,435) QRect(0,0 131x113) QWidget::move QMessageBox(0xd034fdfd20) QPoint(889,435) QWidgetPrivate::setGeometry_sys QMessageBox(0xd034fdfd20) 895 464 131 113 QWindow::setPosition QWidgetWindow(0x22d0e44de90, name="QMessageBoxClassWindow") QPoint(895,464) QWindow::setGeometry QWidgetWindow(0x22d0e44de90, name="QMessageBoxClassWindow") QRect(895,464 131x113) > QWindowsBaseWindow::setGeometry_sys QWidgetWindow(0x22d0e44de90, name="QMessageBoxClassWindow") from QRect(1280,560 262x226) frame: QMargins(13, 58, 13, 13) to QRect(1790,928 262x226) new frame: QRect(1777,870 288x297) < QWindowsBaseWindow::setGeometry_sys QWidgetWindow(0x22d0e44de90, name="QMessageBoxClassWindow") resulting true QRect(1790,928 262x226) geom after exec: QRect(895,464 131x113)