Windows: Remove unused function QWindowsBackingStore::rasterWindow().

It was only used to access the QWindow which can be retrieved
using QPlatformBackingStore::window(), potentially causing a crash
when  QWindowsBackingStore::resize() was called before the window
is shown.

Change-Id: I7c1bfce0f2c371d5d8847fd15fd1dc760b769a8f
Reviewed-by: Oliver Wolff <oliver.wolff@digia.com>

2 files changed, 2 insertions, 12 deletions

diff --git a/src/plugins/platforms/windows/qwindowsbackingstore.cpp b/src/plugins/platforms/windows/qwindowsbackingstore.cpp
index 1dd22c620b..f12c828d8a 100644
--- a/src/plugins/platforms/windows/qwindowsbackingstore.cpp
+++ b/src/plugins/platforms/windows/qwindowsbackingstore.cpp
@@ -141,12 +141,12 @@ void QWindowsBackingStore::resize(const QSize &size, const QRegion &region)
 #ifndef QT_NO_DEBUG_OUTPUT
         if (QWindowsContext::verbose && lcQpaBackingStore().isDebugEnabled()) {
             qCDebug(lcQpaBackingStore)
-                << __FUNCTION__ << ' ' << rasterWindow()->window() << ' ' << size << ' ' << region
+                << __FUNCTION__ << ' ' << window() << ' ' << size << ' ' << region
                 << " from: " << (m_image.isNull() ? QSize() : m_image->image().size());
         }
 #endif
         QImage::Format format = QWindowsNativeImage::systemFormat();
-        if (format == QImage::Format_RGB32 && rasterWindow()->window()->format().hasAlpha())
+        if (format == QImage::Format_RGB32 && window()->format().hasAlpha())
             format = QImage::Format_ARGB32_Premultiplied;
 
         QWindowsNativeImage *oldwni = m_image.data();
@@ -196,14 +196,6 @@ void QWindowsBackingStore::beginPaint(const QRegion &region)
     }
 }
 
-QWindowsWindow *QWindowsBackingStore::rasterWindow() const
-{
-    if (const QWindow *w = window())
-        if (QPlatformWindow *pw = w->handle())
-            return static_cast<QWindowsWindow *>(pw);
-    return 0;
-}
-
 HDC QWindowsBackingStore::getDC() const
 {
     if (!m_image.isNull())
diff --git a/src/plugins/platforms/windows/qwindowsbackingstore.h b/src/plugins/platforms/windows/qwindowsbackingstore.h
index d50570dd2c..b655aca835 100644
--- a/src/plugins/platforms/windows/qwindowsbackingstore.h
+++ b/src/plugins/platforms/windows/qwindowsbackingstore.h
@@ -68,8 +68,6 @@ public:
     HDC getDC() const;
 
 private:
-    QWindowsWindow *rasterWindow() const;
-
     QScopedPointer<QWindowsNativeImage> m_image;
 };