I get a python conversion warning when invoking GetImageBuffer that has char** as a first parameter. This seems to work though, and I know I can disable the warning, but I feel a bit uncomfortable it pops up. Is there any potential pitfall I can get into if disable the warning? Or what’s the proper way of implementing this?
[quote]test_TImage.py:16: RuntimeWarning: creating converter for unknown type "char**"
img.GetImageBuffer(x,y, TImage.kPng)[/quote]
test_TImage.py code:
#!/usr/bin/env python
from ROOT import *
from array import array
from ctypes import *
c=TCanvas('c','c', 546, 462)
f1=TF1('f1', 'sin(x)/x', 0, 10)
f1.Draw()
x=array('l', [0])
y=array('i', [0])
img=TImage.Create()
img.FromPad(c)
img.GetImageBuffer(x,y, TImage.kPng)
s=string_at(x[0], y[0])
of=file('boo.png', 'w')
of.write(s)
of.close()Thanks!