Wilfried Mestdagh wrote:
you are ritght because working with float is more CPU. But GetTickCount
roll over every 49 day... So without extra code the timeout can fail if
it is (by Murphy's law) just on the particular moment..

It's not that much more code.

NewTime := GetTickCount();
if NewTime > OldTime then
  ElapsedTime := NewTime - OldTime
  ElapsedTime := NewTime + (High(Cardinal) - OldTime);

{ Do something with ElapsedTime }

OldTime := NewTime;


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