FileListBox doesn't see the files

I have a couple of strange files on our NT server that seem to be invisible to a FileListBox, but can be found when I check for their existence using a call to FileExists(...)!  

Any reason why FileListBox would not see files that FileExist would see?

My FileListBox Code is similar to this:
FileListBox.Directory := "y:\projects\";
FileListBox.mask := "pd3001.*"
If FileListBox.Items.Count > 1 then ...';

My FileExists Code is similar to this;
If FileExists("y:\projects\pd3001.*") then ...;

When I use FileExists(), I am trying to determine if ANY file exists for a given filename.  When I use FileListBox(), I am trying to determine how MANY file exists for a given filename (ie, PD3001.TXT and PD3001.DOC).

Please help, this is causing problems with new software I've just rolled out at work!
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wkhaysAuthor Commented:
Edited text of question.
Severel issues to this problem is unclear:

1. Could it be that the permissions to this file is too low ?
2. What is the real name of the file you are mentioning ?
3. Could it be that the file is a temporary file ?
4. Could it be that the file is a virtual file, only known to the Shell interface ?

wkhaysAuthor Commented:
Thanks for responding....

The file in question is really called PD30001.DWG.  It is an AutoCad drawing.

When I double-click on it in Windows Explorer, it loads up fine.  It appears to be just a normal file.  FileExists() sees it as a normal file.  

What I am trying to do is to determine whether AutoCad has created a PD30001.BAK file...   So I am checking FileListBox.Items.Count("...\PD30001.*").  This works will all other files in the directory except this file!!!!

When I set up a FileListBox with the mask set at *.*, all files show up EXCEPT this file.  I can't figure out what is special about this file.

I've never seen this before, but it is happening on two different machines.  I have checked the properties of the file and it is not hidden.
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What are the file's attributes? May the file is set as Hidden or System, and, while Explorer is able to show it, TFileListBox isn't.

One possibility, even a good probability - the default filetype for TFileListBox is ftNormal.  Setting it to (ftNormal or ftArchive) will generally show all the non-special files.  Archive bits get set all the time by different programs, and then seemingly 'normal' files have an attribute bit which doesn't let them get found.
wkhaysAuthor Commented:
I went into NT Explorer and tried to turn off the various bits (hidden, Read-Only, Archive).... I'll look again, because I agree this is the likely scenario....  Let me check again and I'll get back to you.
wkhaysAuthor Commented:

In the end, the file was somehow had its SYSTEM bit set... Don't know how it got set and don't know how to clear it.

Anyway, I set my FileListBox up to read System files and I'm off to the races.

Thanks, everyone.  Simonnet - you were first with a close answer.  please answer and I'll award the points.

I thought there was an "accept comment as answer" option coming ...

Thanks, WKHays. I am glad I was able to help.




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