TGaxis *ax;

void texec_axis(void){
   TCanvas *c =new TCanvas();
   ax = new TGaxis();
   TExec *draw_axis = new TExec("draw_axis","draw_axis()");
   c->DrawFrame(-1,-1,1,1);
   draw_axis->Draw();
}

void draw_axis()
{
   double wmin = 0.;
   double wmax = 1.;
   int ndiv = 510;
   ax->PaintAxis(gPad->GetUxmin(),0.,gPad->GetUxmax(),0.,wmin,wmax,ndiv);
}