--- c:\Users\tkarpati\Documents\Workspace\perforce\depot\3am\products\irv\3rdparty\qt-5.2.1\qtbase\src\plugins\platforms\windows\qwindowswindow.cpp	2014-07-16 15:38:06.115504300 +0200
+++ c:\Users\tkarpati\Documents\qt\qwindowswindow.cpp	2014-07-16 14:31:35.175097800 +0200
@@ -1549,10 +1549,27 @@
     if (!w->isTopLevel())
         center = w->mapToGlobal(center);
     const QScreen *screen = w->screen();
+
     if (!screen->geometry().contains(center))
-        foreach (const QScreen *sibling, screen->virtualSiblings())
-            if (sibling->geometry().contains(center))
-                return sibling;
+    {
+        int maxArea = 0;
+        const QScreen* screenByOccupiedArea = nullptr;
+
+        foreach(const QScreen *sibling, screen->virtualSiblings())
+        {
+            QRect geom = sibling->geometry();
+            QRect intersected = geom.intersected(w->geometry());
+            int area = intersected.width() * intersected.height();
+            if (area > maxArea)
+            {
+                maxArea = area;
+                screenByOccupiedArea = sibling;
+            }   
+        }
+
+        return screenByOccupiedArea;
+    }
+
     return screen;
 }