From 966e893151952d19131f21738861c483b8af042c Mon Sep 17 00:00:00 2001
From: Friedemann Kleint <Friedemann.Kleint@theqtcompany.com>
Date: Mon, 8 Feb 2016 15:51:46 +0100
Subject: Windows QPA: Prefer const-versions of API where applicable.

Ensure no detaching occurs by using Container::constFirst()
and QImage::constScanLine().

Change-Id: Ie197d795d9329de8be76ed388ba2c71ccf201f5c
Reviewed-by: Joerg Bornemann <joerg.bornemann@theqtcompany.com>
---
 src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp')

diff --git a/src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp b/src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp
index bb4f4b1abd..71491595a4 100644
--- a/src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp
+++ b/src/plugins/platforms/windows/qwindowsfontenginedirectwrite.cpp
@@ -493,7 +493,7 @@ QImage QWindowsFontEngineDirectWrite::alphaMapForGlyph(glyph_t glyph, QFixed sub
     QImage alphaMap(im.width(), im.height(), QImage::Format_Alpha8);
 
     for (int y=0; y<im.height(); ++y) {
-        uint *src = (uint*) im.scanLine(y);
+        const uint *src = reinterpret_cast<const uint *>(im.constScanLine(y));
         uchar *dst = alphaMap.scanLine(y);
         for (int x=0; x<im.width(); ++x) {
             *dst = 255 - (m_fontEngineData->pow_gamma[qGray(0xffffffff - *src)] * 255. / 2047.);
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