Detecting open files in Delphi

Is there a way to detect if a file of any kind (for example .mp3-files) is opened? I want to know if a mp3-file is being played on the computer where my app is installed.
johnrtAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

Socrates050697Commented:
The only way I know to do this is to try opening the file with exclusive access. If the file is already open then it fails. Heres a function to do it -

note: this function will also return false if the file doesn't exist.

function isFileOpen(Filename: string): boolean;
var
  MyOfStruct: TOfStruct;
  FileHandle: integer;
begin
  FileHandle:=OpenFile(Filename,MyOfStruct,OF_SHARE_EXCLUSIVE);
  if FileHandle=HFILE_ERROR then
  begin
    result:=False;
  end
  else
  begin
    result:=True;
    CloseHandle(FileHandle);
  end;
end;

Hope this helps
Socrates
0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
johnrtAuthor Commented:
Thank you. I'll try it...
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Delphi

From novice to tech pro — start learning today.