// echo object at mouse position and show a graphics line
void draw_circle()
{
  
  

   TObject *select = paddy->GetSelected();
   if(!select) return;
   if (!select->InheritsFrom("TH2")) {paddy->SetUniqueID(0); return;}
   //   paddy->GetCanvas()->FeedbackMode(kTRUE);

   //   paddy->cd();

   int pyold = paddy->GetUniqueID();
   int px = paddy->GetEventX();
   int py = paddy->GetEventY();
   int event = paddy->GetEvent();
   float uxmin = paddy->GetUxmin();
   float uxmax = paddy->GetUxmax();
   int pxmin = paddy->XtoAbsPixel(uxmin);
   int pxmax = paddy->XtoAbsPixel(uxmax);
   float xx  = paddy->AbsPixeltoX(px);
   float yy  = paddy->AbsPixeltoY(py);

   //   cout << event << " " << px <<  " " << py << endl; 
   if (event==1) //click
     {
       TEllipse* te = new TEllipse();
       te->SetFillStyle(0);
       te->SetLineWidth(2);
       te->SetLineWidth(5);


       te->SetX1(xx);
       te->SetY1(yy);
       te->SetR1(10);
       te->SetR2(5);
       te->Draw();
       
       cones->Add(te);

       te->Draw();
       
     }
      paddy->Update();
   //   buttoncanvas->cd();

//     else if (event==11) //dragging
//       {
// 	TEllipse* te = (TEllipse*)cones->GetLast();
//         te->SetR1(TMath::Abs(xx - te->GetX1()));
//         te->SetR2(TMath::Abs(yy - te->GetY1()));
//        te->Draw();
//       }
   
   
     
}