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      18 Aug

    When faced with a wall of errors and no hope to fix them, remember the following "Programs always do what you tell them to, and seldom what you want them to, but eventually you'll run out of things that can go wrong and it'll just work. and that's the secret to good programming."

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      11 Aug

    Should I be practicing programming every day? I feel if I don't, I'll get instantly rusty or something.

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Making a Drive Full!

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#13 WingedPanther


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Posted 08 March 2013 - 10:57 AM

2^32-2 = 4,294,967,294 or about 4GB. Based on Luthfi's earlier answer, I believe we have found the issue.

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#14 Luthfi


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Posted 08 March 2013 - 08:39 PM


WingedPanther had summed it up for you. Both your free space sizes surpass the limitation of SetFilePointer (when missing lpDistanceToMoveHigh). Actually it seems that my earlier answer was based from wrong documentation. The online documentation (which url I gave you already) states that the limitation would be (2^31)-2. So, actually the limitation is 2GB-2B. Now we have the answer to what caused the failure in your code.


The solution? Make SetFilePointer to use proper lpDistanceToMoveHigh value. I don't recommend to alter TFileStream, so you better rewrite your code to directly use windows api instead of TFileStream.

Edited by LuthfiHakim, 08 March 2013 - 08:39 PM.