From aab30e9a3ec78c3a9b2998feeef275e973ef0ff2 Mon Sep 17 00:00:00 2001
From: Gunnar Sletta <gunnar.sletta@nokia.com>
Date: Mon, 12 Apr 2010 12:12:01 +0200
Subject: Safeguard ourselves against corrupt registry values for cleartype
 gamma

Reviewed-by: Eskil
Task: http://bugreports.qt.nokia.com/browse/QTBUG-7596
---
 src/gui/painting/qdrawhelper.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/gui/painting/qdrawhelper.cpp b/src/gui/painting/qdrawhelper.cpp
index b1e3281..a0c9828 100644
--- a/src/gui/painting/qdrawhelper.cpp
+++ b/src/gui/painting/qdrawhelper.cpp
@@ -6983,6 +6983,11 @@ void qt_build_pow_tables() {
     int winSmooth;
     if (SystemParametersInfo(0x200C /* SPI_GETFONTSMOOTHINGCONTRAST */, 0, &winSmooth, 0))
         smoothing = winSmooth / 1000.0;
+
+    // Safeguard ourselves against corrupt registry values...
+    if (smoothing > 5 || smoothing < 1)
+        smoothing = 1.4;
+
 #endif
 
 #ifdef Q_WS_X11
-- 
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