I have searched the roottalk lists extensively, and poked through a lot of
source code, and still haven't figured out the answer to a question:
I have recently started generating some compiled applications using the
root libraries, for the few cases where I need more speed than CINT
provides (especially reading in large text files to convert the to ROOT
format). I cannot, however, get any of the graphs to appear on the screen
which appear when running interactively. No sign of any windowing activity
is present. I would have expected c1=new TCanvas("name","title", 20, 20,
200, 200) would have made a window appear, eventually.
I also notice that when running compiled stress, it doesn't actually draw
anything visibly on the screen or create any windows. My program template
is based closely on the stress code. The inner loop calls
(with hist=a TH1 and c=a TCanvas)
hist->Draw(); c->Modified(); c->Update(); gSystem->ProcessEvent();
(where everything after the hist->Draw() consists of various attempts at
witchcraft I have invoked to try to get drawing turned on).
Is there something really silly I am missing? How does one get windows to
actually draw when running compiled code? I am running under LinuxPPC on a
Macintosh.
If the answer to this is not something obvious that I have missed, maybe it
should be put in a howto.
Thanks.
Marcus
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