On 11/10/2015 01:14 PM, Engelbert Buxbaum wrote:
as far as I can see the only advantage of running the math-routine in
a thread
would be that the program could be terminated at any time, rather than
only
in the main loop.
If a long winding calculation runs in a Thread, the complete main thread
(including the GUI) is not blocked and the program can do any other
stuff (e.g. as a reaction on TTimer events, and also as a reaction on
Events this or any other thread fires via TThread.Queue).
Moreover on a multi-CPU system (which is standard nowadays), multiple
threads can do long winding calculations at the same time and finish by
far faster than a single threaded program.
Even if one did it like that, the original problem remains: who is the
sender
in the FormPaint call?
As any GUI stuff is only allowed in the main thread it can only be the
Main thread (if this is what you are asking)
-Michael
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