[delphizip] Re: weird EZipMasterError
- From: "James Turner" <james.d.h.turner@xxxxxxxxxxxx>
- To: <delphizip@xxxxxxxxxxxxx>
- Date: Thu, 19 Sep 2002 17:44:08 +0100
I think you are working outside my knowledge and experience and I may be
misunderstanding your problem but here are my thoughts.
It sounds like you have registered a shell extension (something I've never
tried). In that case, the zipmaster code is being called by Windows (not by
your program) whenever a context menu for a file is requested. An exception
is being raised by ZipMaster/Windows when it encounters a file that is not a
zip file. That exception is probably being reported by the shell extension
code rather than by the calling program.
If I am right, you will have to modify the shell extension code and
reinstall it.
If you require code to identify a valid EndOfDirRec in a file (i.e. quickly
test if a file may be a valid zip archive) email me directly and I'll throw
something simple together.
Hope this is of some help,
James Turner
----- Original Message -----
From: "Gerard" <gslurink@xxxxxx>
To: <delphizip@xxxxxxxxxxxxx>
Sent: Thursday, September 19, 2002 2:22 PM
Subject: [delphizip] weird EZipMasterError
>
> I have a very weird error.
>
> I have a list which contains filenames. For this list I have
> created a shell contextmenu which shows the contextmenu
> like in Explorer. (create a pidl and query the contextmenu).
> At this point I have no zip dll's loaded and made no references
> to zipmaster. It has worked well for more than a week.
> Now suddenly an error pops up when I activate the
> contextmenu: class EZipMaster: 'This archive is not valid
> zip archive'. This happens not when I select a zip file but with any
> other file. After this the program continues normally.
> Note that I am not working here with a zip file at all.
> The error occurs when I perform the call ContextMenu3.QueryContextMenu
> (Contextmenu = IContextMenu3).
>
> I am absolute baffled because I have not loaded the zip dll's
> at this point, not assigned anything to the zipmaster
> component and there are no references
> to ZipMstr in the unit where the error seems to occur.
>
> I also noticed that this error only comes when I run the application
within
> the Delphi IDE. When I start it from Explorer it does not show up.
>
> I have the feeling that the IDE is making some mix up with resources
> or so, I have no clue. I have put on all compiler checking but I get
> no overflow or range errors.
>
> I don't have a clue how the program can reach this this error message,
> since there is no code called from ZipMstr yet.
>
> Does anyone have any idea what could be the problem ?
>
> Gerard
>
>
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