Convert from UNC notation to Drive letter?

Windows with Delphi
Windows API (94)
Windows Filesystem (41)
Windows Forms (69)
Windows Graphics (38)

Exchange Links

About this site

Links to us

See also:

Retrieve the UNC version of a file's name

Convert from UNC notation to Drive letter?

This article has not been rated yet. After reading, feel free to leave comments and rate it.

The function ExpandUNCFileName function converts a mapped path/file to UNC, but how can this process be reversed?

There is no simple function that would do the trick, you have to go through all existing 'remote' drives, look at their UNC name and compare them with the one you are interested in:

// by billb@catoctinsoftware.com
program P;

procedure TForm1.Button1Click(Sender: TObject);
const
  YOURUNCFILENAME = '\\ISS\VOL1\ISS\SHARE\';
var
  Drive  : Char;
  Drlist : TStringList;
  Filist : TStringList;
  I      : integer;
begin 
  Drlist := TStringList.Create; 
  Filist := TStringList.Create; 
  for Drive := 'a' to 'z' do 
    case GetDriveType(PChar(Drive + ':\')) of 
    DRIVE_REMOTE: 
    begin 
      Filist.Add(expanduncfilename(Drive + ':\')); 
      Drlist.Add(Drive) 
    end 
    end; 
  {......} 
  I := Filist.indexof(YOURUNCFILENAME); 
  if I > -1 then 
    ShowMessage(YOURUNCFILENAME + 'Mapped to drive ' + Drlist[I]); 
  
  Drlist.Free; 
  Filist.Free 
end; 

end.

Comments:

Email address (not necessary): Rate as	Hide my email when showing my comment. Please notify me once a day about new comments on this topic. Please provide a valid email address if you select this option.

It seems that you are from Washington, US . Info/ Feedback on this	Show city and country Show country only Hide my location
You can mark text as 'quoted' by putting [quote] .. [/quote] around it.
Please type in the code:
Add a picture: Please do not post inappropriate pictures. Inappropriate pictures include pictures of minors and nudity. The owner of this web site reserves the right to delete such material.


	Search: