Focus gained by mouse click handled correctly now.

Task-number: QTSOLBUG-70
Change-Id: Id9cef80728762252542908b4fc62cb1509666da2
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Andy Shaw <andy.shaw@digia.com>

Author: Lauri Laanmets

qtwinmigrate/src/qwinwidget.cpp

@@ -261,7 +261,9 @@ bool QWinWidget::winEvent(MSG *msg, long *)
 #endif
     if (msg->message == WM_SETFOCUS) {
         Qt::FocusReason reason;
-        if (::GetKeyState(VK_SHIFT) < 0)
+        if (::GetKeyState(VK_LBUTTON) < 0 || ::GetKeyState(VK_RBUTTON) < 0)
+            reason = Qt::MouseFocusReason;
+        else if (::GetKeyState(VK_SHIFT) < 0)
             reason = Qt::BacktabFocusReason;
         else
             reason = Qt::TabFocusReason;