TChain::Draw, ProgressBar and gSystem->ProcessEvents()

From: Thomas Bretz <>
Date: Fri, 22 Apr 2005 14:46:08 +0200

Hi all,

is it possible (like in TTreeViewer) to get a TGProgressBar setup when doing TChain::Draw (btw: in TTreeViewer it shows the progress 'per-file'). Is it possible - in a precompiled program - that TChain::Draw somehow calls gSystem->ProcessEvents() (regularily, eg 25 times a second) so that a GUI doesn't stop to respond...

Thomas. Received on Fri Apr 22 2005 - 14:46:32 MEST

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