show % when calculating MD5

I am using this code: http://www.fichtner.net/delphi/md5.delphi.phtml

How can i show how many percent when i calculate md5?
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din345Asked:
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CodedKSenior Software EngineerCommented:
Din345 I am using the same code to calculate a file that is 3Gbyte.
It takes less than a second to take the Md5.
How are u going to use this ?

Maybe a progressbar and Application.ProcessMessages can do the job, but
you want be able to check it since it ends so fast !

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din345Author Commented:
oh i didnt know that, i thougt it would take long time! thx!
CodedKSenior Software EngineerCommented:
Thanks din345 for the points and the grade.
CodedKSenior Software EngineerCommented:
Actually it may take some seconds for certain files...
BUT..
If you use Application.ProcessMessages so you can have a visual feedback and a Progressbar or a label
with the % value then you will slow down the process significantly.
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