diff --git a/tests/manual/diaglib/qwindowdump.cpp b/tests/manual/diaglib/qwindowdump.cpp
index a77bae22e9..c0faefb918 100644
--- a/tests/manual/diaglib/qwindowdump.cpp
+++ b/tests/manual/diaglib/qwindowdump.cpp
@@ -38,6 +38,9 @@
 #  include <QtGui/QScreen>
 #  include <QtGui/QWindow>
 #  include <qpa/qplatformwindow.h>
+#  if QT_VERSION >= 0x050600
+#    include <private/qhighdpiscaling_p.h>
+#  endif
 #endif
 #include <QtCore/QMetaObject>
 #include <QtCore/QRect>
@@ -131,9 +134,19 @@ void formatWindow(QTextStream &str, const QWindow *w, FormatWindowOptions option
         str << "[top] ";
     if (w->isExposed())
         str << "[exposed] ";
+    if (w->surfaceClass() == QWindow::Offscreen)
+        str << "[offscreen] ";
+    str << "surface=" << w->surfaceType() << ' ';
     if (const Qt::WindowState state = w->windowState())
         str << "windowState=" << state << ' ';
     formatRect(str, w->geometry());
+    if (w->isTopLevel()) {
+        str << " \"" << w->screen()->name() << "\" ";
+#if QT_VERSION >= 0x050600
+        if (QHighDpiScaling::isActive())
+            str << "factor=" << QHighDpiScaling::factor(w) << ' ';
+#endif
+    }
     if (!(options & DontPrintWindowFlags)) {
         str << ' ';
         formatWindowFlags(str, w->flags());