Accessing a: drive

Hello,
How do I access drive a: or CDROM
drive and then automatically erase
files on that selected drive using
Delphi 5.
........................................
Ignore above I will rephrase question...
Senario: From a menu item I basically would need to wipe a disk
automatically...a Floppy in drive a:\ is a good example.
Please note by using filedelete()you have to know which files
are on disk and indivdually delete them.I would need an automated
approach.(Delete all files on drive a:).


regards,
frank
frwAsked:
Who is Participating?

Improve company productivity with a Business Account.Sign Up

x
 
nricoConnect With a Mentor Commented:
simonet is right. I'll work it our for you... :-)

Function SlashDir(Name:String):String;
Begin
  If Name[Length(Name)]<>'\' Then Name:=Name+'\';
  SlashDir:=Name;
End;

Procedure WipeDir(Name:String);
Var
  S:TSearchRec;
  Result:Integer;
Begin
  Name:=SlashDir(Name);
  Result:=FindFirst(Name+'*.*',faAnyFile,S);
  While Result=0 Do
  Begin
    If (S.Attr Or faDirectory>0) And (S.Name[1]<>'.') Then WipeDir(Name+S.Name)
      Else DeleteFile(Name+S.Name);
    Result:=FindNext(S);
  End;
  FindClose(S);
  {$I-}
  RmDir(Name);
  {$I+}
End;

This could contain some minor bugs (Like I'm not sure about the TSearchRec.Attr member), but it should mostly be working.
0
 
EpsylonCommented:
Erase files from CDROM????

Besides, I do not quite understand your question.
0
 
EpsylonCommented:
To delete files you can use this:

DeleteFile('A:\somefile.xxx');
0
The 14th Annual Expert Award Winners

The results are in! Meet the top members of our 2017 Expert Awards. Congratulations to all who qualified!

 
intheCommented:
for a drive do exactly same as normal drive ..

deletefile(a:\somefilename.file)

you cant erase a file on cdrom unless you mean you have it formatted as a drive (like with easycd creator etc?)
0
 
intheCommented:
;-)
0
 
EpsylonCommented:
(o:
0
 
frwAuthor Commented:
Edited text of question.
0
 
simonetCommented:
You have to do an interaction through all files in the disk in order to wipe the disk clean.

There are no functions in Delphi that will allow you to create a clean FAT on a floppy. You can use INT 21h functions, but that's a whole lotta trouble, and not sure to work with NT.

The best approach is to find all files on the disk, delete them as they are found. Then delete all directories and their parents, etc. Some interaction or recursion will be necessary here.

Yours,

Alex

0
 
ITugayCommented:
uses ... ShellAPI;

.....
ShellExecute(handle,'open','command','/c DEL A:\YOURFILE.EXT',nil,0);
ShellExecute(handle,'open','command','/c DEL A:\*.EXE',nil,0);
....
--------
Igor.
0
 
johnstonedCommented:
nrico's answer is the way i'd do it, but I think you need to change

If (S.Attr Or faDirectory>0) And (S.Name[1]<>'.') Then WipeDir(Name+S.Name)
      Else DeleteFile(Name+S.Name);


to

If (S.Attr and faDirectory>0) And (S.Name[1]<>'.') Then WipeDir(Name+S.Name)
      Else DeleteFile(Name+S.Name);

This will detect directories properly now.

Dave.
     
   
0
 
mullet_attackCommented:
You also need to change :

If (S.Attr and faDirectory>0) And (S.Name[1]<>'.') Then WipeDir(Name+S.Name)
      Else DeleteFile(Name+S.Name);

to

If (S.Attr and faDirectory>0) And (S.Name[1]<>'.') and (S.Name[1]<>'..') Then WipeDir(Name+S.Name)
      Else DeleteFile(Name+S.Name);


This will detect the parent directory when you are in a subdirectory.

0
 
titzCommented:
hi,

i think the best and simplest way is to format the disc !

cheers
titz
0
 
frwAuthor Commented:
Thanks to all who got involved with
this question.
Frank
0
 
simonetCommented:
Well, you're welcome.
0
Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

All Courses

From novice to tech pro — start learning today.