Merge rev 37158 from fireworks branch.

Store and restore gTQSender in slot methods that call further signal
emitting functions.


git-svn-id: http://root.cern.ch/svn/root/trunk@37195 27541ba8-7e3a-0410-8455-c3a389f83636

graf3d/eve/src/TEveViewer.cxx

@@ -560,7 +560,10 @@ void TEveViewerList::OnMouseOver(TObject *obj, UInt_t /*state*/)
    TEveElement *el = dynamic_cast<TEveElement*>(obj);
    if (el && !el->IsPickable())
       el = 0;
+
+   void *qsender = gTQSender;
    gEve->GetHighlight()->UserPickedElement(el, kFALSE);
+   gTQSender = qsender;
 
    HandleTooltip();
 }
@@ -579,7 +582,10 @@ void TEveViewerList::OnReMouseOver(TObject *obj, UInt_t /*state*/)
    TEveElement* el = dynamic_cast<TEveElement*>(obj);
    if (el && !el->IsPickable())
       el = 0;
+
+   void *qsender = gTQSender;
    gEve->GetHighlight()->UserRePickedElement(el);
+   gTQSender = qsender;
 
    HandleTooltip();
 }
@@ -598,7 +604,10 @@ void TEveViewerList::OnUnMouseOver(TObject *obj, UInt_t /*state*/)
    TEveElement* el = dynamic_cast<TEveElement*>(obj);
    if (el && !el->IsPickable())
       el = 0;
+
+   void *qsender = gTQSender;
    gEve->GetHighlight()->UserUnPickedElement(el);
+   gTQSender = qsender;
 
    HandleTooltip();
 }