diff --git a/src/platformsupport/fbconvenience/qfbbackingstore.cpp b/src/platformsupport/fbconvenience/qfbbackingstore.cpp
index 2cad3441e4..e2d94406a4 100644
--- a/src/platformsupport/fbconvenience/qfbbackingstore.cpp
+++ b/src/platformsupport/fbconvenience/qfbbackingstore.cpp
@@ -104,9 +104,8 @@ void QFbBackingStore::beginPaint(const QRegion &region)
     if (mImage.hasAlphaChannel()) {
         QPainter p(&mImage);
         p.setCompositionMode(QPainter::CompositionMode_Source);
-        const QVector<QRect> rects = region.rects();
-        for (QVector<QRect>::const_iterator it = rects.begin(); it != rects.end(); ++it)
-            p.fillRect(*it, Qt::transparent);
+        for (const QRect &r : region)
+            p.fillRect(r, Qt::transparent);
     }
 }
 
diff --git a/src/platformsupport/fbconvenience/qfbscreen.cpp b/src/platformsupport/fbconvenience/qfbscreen.cpp
index 2b4498157c..c42fd879f8 100644
--- a/src/platformsupport/fbconvenience/qfbscreen.cpp
+++ b/src/platformsupport/fbconvenience/qfbscreen.cpp
@@ -210,10 +210,9 @@ QRegion QFbScreen::doRedraw()
     if (!mPainter)
         mPainter = new QPainter(&mScreenImage);
 
-    const QVector<QRect> rects = mRepaintRegion.rects();
     const QRect screenRect = mGeometry.translated(-screenOffset);
-    for (int rectIndex = 0; rectIndex < mRepaintRegion.rectCount(); rectIndex++) {
-        const QRect rect = rects[rectIndex].intersected(screenRect);
+    for (QRect rect : mRepaintRegion) {
+        rect = rect.intersected(screenRect);
         if (rect.isEmpty())
             continue;
 
diff --git a/src/plugins/platforms/bsdfb/qbsdfbscreen.cpp b/src/plugins/platforms/bsdfb/qbsdfbscreen.cpp
index 067a26a7b1..d752b539a0 100644
--- a/src/plugins/platforms/bsdfb/qbsdfbscreen.cpp
+++ b/src/plugins/platforms/bsdfb/qbsdfbscreen.cpp
@@ -247,8 +247,7 @@ QRegion QBsdFbScreen::doRedraw()
     if (!m_blitter)
         m_blitter.reset(new QPainter(&m_onscreenImage));
 
-    const auto rects = touched.rects();
-    for (const QRect &rect : rects)
+    for (const QRect &rect : touched)
         m_blitter->drawImage(rect, mScreenImage, rect);
     return touched;
 }
diff --git a/src/plugins/platforms/integrity/qintegrityfbscreen.cpp b/src/plugins/platforms/integrity/qintegrityfbscreen.cpp
index 3979937955..d64b96ca4c 100644
--- a/src/plugins/platforms/integrity/qintegrityfbscreen.cpp
+++ b/src/plugins/platforms/integrity/qintegrityfbscreen.cpp
@@ -204,15 +204,14 @@ QRegion QIntegrityFbScreen::doRedraw()
     if (!mBlitter)
         mBlitter = new QPainter(&mFbScreenImage);
 
-    QVector<QRect> rects = touched.rects();
-    for (int i = 0; i < rects.size(); i++) {
+    for (QRect rect : touched) {
         FBRect fbrect = {
-            (uint32_t)rects[i].left(),
-            (uint32_t)rects[i].top(),
-            (uint32_t)rects[i].width(),
-            (uint32_t)rects[i].height()
+            (uint32_t)rect.left(),
+            (uint32_t)rect.top(),
+            (uint32_t)rect.width(),
+            (uint32_t)rect.height()
         };
-        mBlitter->drawImage(rects[i], mScreenImage, rects[i]);
+        mBlitter->drawImage(rect, mScreenImage, rect);
         gh_FB_expose(mFbh, &fbrect, NULL);
     }
     return touched;
diff --git a/src/plugins/platforms/vnc/qvnc.cpp b/src/plugins/platforms/vnc/qvnc.cpp
index fa65e8c9a4..44fc1c6101 100644
--- a/src/plugins/platforms/vnc/qvnc.cpp
+++ b/src/plugins/platforms/vnc/qvnc.cpp
@@ -476,7 +476,8 @@ void QRfbRawEncoder::write()
 //        rgn &= QRect(0, 0, server->screen()->geometry().width(),
 //                     server->screen()->geometry().height());
 //    }
-    const QVector<QRect> rects = rgn.rects();
+
+    const auto rectsInRegion = rgn.rectCount();
 
     {
         const char tmp[2] = { 0, 0 }; // msg type, padding
@@ -484,16 +485,16 @@ void QRfbRawEncoder::write()
     }
 
     {
-        const quint16 count = htons(rects.size());
+        const quint16 count = htons(rectsInRegion);
         socket->write((char *)&count, sizeof(count));
     }
 
-    if (rects.size() <= 0)
+    if (rectsInRegion <= 0)
         return;
 
     const QImage screenImage = client->server()->screenImage();
 
-    for (const QRect &tileRect: rects) {
+    for (const QRect &tileRect: rgn) {
         const QRfbRect rect(tileRect.x(), tileRect.y(),
                             tileRect.width(), tileRect.height());
         rect.write(socket);
diff --git a/src/plugins/platforms/xcb/nativepainting/qxcbnativepainting.cpp b/src/plugins/platforms/xcb/nativepainting/qxcbnativepainting.cpp
index 7731f6c806..5ff45ec183 100644
--- a/src/plugins/platforms/xcb/nativepainting/qxcbnativepainting.cpp
+++ b/src/plugins/platforms/xcb/nativepainting/qxcbnativepainting.cpp
@@ -105,7 +105,7 @@ void qt_xcb_native_x11_info_init(QXcbConnection *conn)
 QVector<XRectangle> qt_region_to_xrectangles(const QRegion &r)
 {
     const int numRects = r.rectCount();
-    const QVector<QRect> input = r.rects();
+    const auto input = r.begin();
     QVector<XRectangle> output(numRects);
     for (int i = 0; i < numRects; ++i) {
         const QRect &in = input[i];