Le 2011-11-13 à 01:27:00, Stephen Lucas a écrit :
I've experienced some anomalies with dynamically creating objects into
this much Y space, which at something like maybe 50000 pixels, I'm
getting some sort of wraparound, which oddly enough, is wrapping back to
25000 or so pixels. After the wraparound point, there is no randomness.
Is it possible that it is after 32767 pixels, that it wraps around at
-32768 pixels ?
Is there a maximum canvas size and does dynamic object creation beyond
those limits have a predictable ramification?
AFAIK, each Tk widget has an associated X11 Window (under Linux), and each
X11 Window has a size limit of 65536 pixels wide or high, and an offset
limit of ±32768 pixels up/down/left/right relative to the top-left corner
of the parent.
Without looking at the Tk source, I would conjecture that it does the same
thing as X11 does, even on other platforms, for the simple reason that X11
was Tk's original display platform.
Is that right ?
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| Mathieu BOUCHARD ----- téléphone : +1.514.383.3801 ----- Montréal, QC
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