{
   float vals[] = {10., 2., 5., 7.5};
   const char* labels[]={"Label 1","Label 2","Label 3","Label4"};

   auto C = new TCanvas("C","TPie test",500,500);
   auto pie  = new TPie("pie", "Pie Title", 4, vals, nullptr, labels);
   pie->SetTextFont(42);
   pie->SetTextSize(0.04);
   pie->SetLabelFormat("#splitline{%txt}{%perc}");
   pie->SetLabelsOffset(.02);
   pie->SetRadius(.3);
   pie->Draw("");
}