Mega Code Archive
Check if a file is in use
<![CDATA[
Title: check if a file is in use?
function IsFileInUse(FileName: TFileName): Boolean;
var
HFileRes: HFILE;
begin
Result := False;
if not FileExists(FileName) then Exit;
HFileRes := CreateFile(PChar(FileName),
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;
procedure TForm1.Button1Click(Sender: TObject);
begin
if IsFileInUse('c:\Programs\delphi6\bin\delphi32.exe') then
ShowMessage('File is in use.');
else
ShowMessage('File not in use.');
end;
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