Clipping graphical objects with histogram axes

ROOT
2

Clipping is done on TPad edges. The axis are drawn on a TFrame edges.
Here is the way to to it:

void EllipseClip()
{
   TCanvas* c1 = new TCanvas("c1","c1",50,50,400,400);
   TH2F* h2    = new TH2F("h2","h2",10,0,10,10,0,10);
   c1->Range(0,0,10,10);
   h2->Draw();

   // Define a transparent pad to clip the ellipse
   TPad* clippad = new TPad("clippad","clippad",0.1,0.1,0.9,0.9);
   clippad->SetFillStyle(4000);
   clippad->SetBorderSize(0);
   clippad->SetFrameFillColor(0);
   clippad->SetFrameBorderMode(0);
   clippad->Range(1,1,9,9);
   clippad->Draw();
   clippad->cd();

   TEllipse* AnEllipse = new TEllipse(2.5,2.5,8,1,0,360,135);
   AnEllipse->SetFillColor(kBlue);
   AnEllipse->Draw();
}