Delphi #179 – TZipFile FileComment Bug
http://LearnDelphi.tv TZipFile allows you to handle zip files in Delphi without relying on a third party library – it’s pretty good, but I’ve found a bug in it. In this video, I explain the bug, create a test project to confirm it, then create a fix. This bug will probably be the same for FileName and ExtraField.
You may have noticed that when I tried to free the TMemoryStream (at 11:20) I got an access violation, which had me confused during the video. What I needed to do was close the zip file first (z.close), then I could free the memory stream (ms.free).
Alister Christie is a Delphi MVP (Most Valued Professional), Consultant, Developer, Trainer, Presenter, and Author. He has presented at ADUG (Australasian Delphi Users Group) Symposia and Code Rage Conferences for many years. Alister holds a degree in Mathematics and Computer Science from Victoria University, Wellington. He lives near Wellington, New Zealand.
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