From c29e93c79f0b7ceba4bd4a4aa458b93e8bf781cf Mon Sep 17 00:00:00 2001
From: Friedemann Kleint <Friedemann.Kleint@digia.com>
Date: Mon, 11 Mar 2013 15:30:05 +0100
Subject: [PATCH] Windows: Fix drop shadows for widget tool tips.

Change-Id: Ifacee152e291face69964471d75e92b7784be4a4
Reviewed-by: Joerg Bornemann <joerg.bornemann@digia.com>
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>
---
 src/widgets/kernel/qwidget_qpa.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/widgets/kernel/qwidget_qpa.cpp b/src/widgets/kernel/qwidget_qpa.cpp
index 43a49e52f94..c4b527bf9ce 100644
--- a/src/widgets/kernel/qwidget_qpa.cpp
+++ b/src/widgets/kernel/qwidget_qpa.cpp
@@ -877,7 +877,12 @@ void QWidgetPrivate::createTLSysExtra()
             extra->topextra->window->setMinimumSize(QSize(extra->minw, extra->minh));
         if (extra->maxw != QWIDGETSIZE_MAX || extra->maxh != QWIDGETSIZE_MAX)
             extra->topextra->window->setMaximumSize(QSize(extra->maxw, extra->maxh));
+#ifdef Q_OS_WIN
+        if (q->inherits("QTipLabel") || q->inherits("QAlphaWidget"))
+            extra->topextra->window->setProperty("_q_windowsDropShadow", QVariant(true));
+#endif
     }
+
 }
 
 void QWidgetPrivate::deleteTLSysExtra()