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.