"5.9.3 windows" ()
geom before exec: QRect(0,0 640x480)
QWindow::resize QWidgetWindow(0x1687713f380, name="QMessageBoxClassWindow") QSize(640, 480)
QWindow::resize QWidgetWindow(0x168771401e0, name="QWidgetClassWindow") QSize(640, 480)
QWindow::resize QWidgetWindow(0x1687713fce0, name="QWidgetClassWindow") QSize(640, 480)
QWidgetPrivate::setGeometry_sys QDesktopScreenWidget(0x1687715aec0) 0 0 1920 1080
QWidgetPrivate::setGeometry_sys QDesktopWidget(0x168771788b0, name="desktop") 0 0 1920 1080
CreateWindowEx: QWidgetWindow(0x1687713f380, name="QMessageBoxClassWindow") class="Qt5QWindowIcon" title="qtbug63661"
WindowCreationData: QFlags<Qt::WindowType>(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(0x50d159f8c0) QSize(126, 113)
QWidgetPrivate::setGeometry_sys QMessageBox(0x50d159f8c0) 0 0 126 113
QWidget::resize QMessageBox(0x50d159f8c0) QSize(126, 113)
QWidgetPrivate::setGeometry_sys QMessageBox(0x50d159f8c0) 0 0 126 113
QDialog::adjustPosition QPoint(891,435) QRect(0,0 126x113)

QWidget::move QMessageBox(0x50d159f8c0) QPoint(891,435)

QWidgetPrivate::setGeometry_sys QMessageBox(0x50d159f8c0) 897 464 126 113

QWindow::setPosition QWidgetWindow(0x1687713f380, name="QMessageBoxClassWindow") QPoint(897,464)
--> Fail here, QWindow::setPosition uses invalid default size

QWindow::setGeometry QWidgetWindow(0x1687713f380, name="QMessageBoxClassWindow") QRect(897,464 640x480)

> QWindowsBaseWindow::setGeometry_sys QWidgetWindow(0x1687713f380, name="QMessageBoxClassWindow") 
 from  QRect(1280,560 1280x960)  frame:  QMargins(13, 58, 13, 13)  to  QRect(1794,928 1280x960)  new frame:  QRect(1781,870 1306x1031)
< QWindowsBaseWindow::setGeometry_sys QWidgetWindow(0x1687713f380, name="QMessageBoxClassWindow") 
 resulting  true QRect(1794,928 252x226)
QWindowsWindow::setGeometry: Unable to set geometry 1280x960+1794+928 on QWidgetWindow/'QMessageBoxClassWindow'. Resulting geometry:  252x226+1794+928 (frame: 13, 58, 13, 13, custom margin: 0, 0, 0, 0, minimum size: 126x113, maximum size: 126x113).
geom after exec: QRect(897,464 126x113)