auto c1 = new TCanvas("c1");
c1->Range(0,0,1,1);

auto par = new TPaveLabel(0.1,0.8,0.9,0.95,"Examples of various arrows formats");
par->SetFillColor(42);
par->Draw();

auto ar1 = new TArrow(0.1,0.1,0.1,0.7);
ar1->Draw();
auto ar2 = new TArrow(0.2,0.1,0.2,0.7,0.05,"|>");
ar2->SetAngle(40);
ar2->SetLineWidth(2);
ar2->Draw();
auto ar3 = new TArrow(0.3,0.1,0.3,0.7,0.05,"<|>");
ar3->SetAngle(40);
ar3->SetLineWidth(2);
ar3->Draw();
auto ar4 = new TArrow(0.46,0.7,0.82,0.42,0.07,"|>");
ar4->SetAngle(60);
ar4->SetLineWidth(2);
ar4->SetFillColor(2);
ar4->Draw();
auto ar5 = new TArrow(0.4,0.25,0.95,0.25,0.15,"<|>");
ar5->SetAngle(60);
ar5->SetLineWidth(4);
ar5->SetLineColor(4);
ar5->SetFillStyle(3008);
ar5->SetFillColor(2);
ar5->Draw();

%jsroot on
gROOT->GetListOfCanvases()->Draw()