Title: How to get a volume name of a drive
Question: How to get the name of a local or remote drive.
Answer:
For VolumeID the two important functions are
SetErrorMode: for switch off the system error messages,
GetVolumeInformation: for actually retrieving the name.
For NetWorkVolume the important function is
WNetGetConnection: for accessing a networkdrive.
function VolumeID(DriveChar: Char): string;
var
OldErrorMode: Integer;
NotUsed, VolFlags: Integer;
Buf: array [0 .. MAX_PATH] of Char;
begin
OldErrorMode := SetErrorMode(SEM_FAILCRITICALERRORS);
try
if GetVolumeInformation(PChar(DriveChar + ':\'), Buf, sizeof(Buf),
nil, NotUsed, VolFlags, nil, 0) then
SetString(Result, Buf, StrLen(Buf))
else
Result := '';
if DriveChar Result := AnsiUpperCaseFileName(Result)
else
Result := AnsiLowerCaseFileName(Result);
Result := Format('%s',[Result]);
finally
SetErrorMode(OldErrorMode);
end;
end;
function NetworkVolume(DriveChar: Char): string;
var
Buf: Array [0 .. MAX_PATH] of Char;
DriveStr: array [0 .. 3] of Char;
BufferSize: Integer;
begin
BufferSize := sizeof(Buf);
DriveStr[0] := UpCase(DriveChar);
DriveStr[1] := ':';
DriveStr[2] := #0;
if WNetGetConnection(DriveStr, Buf, BufferSize) = WN_SUCCESS then
begin
SetString(Result, Buf, BufferSize);
if DriveChar Result := AnsiUpperCaseFileName(Result)
else
Result := AnsiLowerCaseFileName(Result);
end
else
Result := VolumeID(DriveChar);
end;