// hier eine Function
// es braucht noch "uses shlobj" zu Beginn der
unit Datei
// hope that helps : Gruss Tony
function IsFileInUse(fName:string) : boolean;
var HFileRes : HFILE;
begin
Result := False;
if not FileExists(fName) then
Exit;
HFileRes := CreateFile(pchar(fName),
GENERIC_READ or GENERIC_WRITE,
0, nil, OPEN_EXISTING,
FILE_ATTRIBUTE_NORMAL, 0);
Result := (HFileRes = INVALID_HANDLE_VALUE);
if not Result then CloseHandle(HFileRes);
end;