Getting countour graphs in batch mode

I am using root 5.22/00 on windows. I have used the TH2::Draw(“contlist”) followed by gPad->Update() to generate lists of countours. This works great! I was wondering if its possible to force the calculation and filling the TList of TGraph w/out calling gPad->Update()? I would like to use the contour lists in a “batch” application…

You can call gPad->Update also in batch mode.