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Looking at the shared macros, I've seen them done in a few different ways:

a. exec.Code("G0 X0 Y0");
while (exec.IsMoving ()){}
exec.Wait (200);
Q: why wait after motion is completed?

b. exec.Callbutton(107);
while (exec.IsMoving ()){ exec.Wait(200); }
Q. why wait inside the loop? To avoid empty loop too many times?

c. exec.Code("G0 X0 Y0");
exec.Wait(200);
while (exec.IsMoving ()){}
Q. why wait before the loop? To avoid the next loop finished before the code is inserted into the motion buffer?

So, what's do you recommend and why? Thanks.

You don't need the wait(200) at all if your just waiting for the motion to stop.

So the code:

exec.Callbutton(107);
while (exec.IsMoving ()){}
exec.AddStatusmessage("Motion stopped");


Is guaranteed that the message "Motion stopped" only appear after the motion has stopped?