Locked Files

How do you detect if another process has locked a file (e.g. is writing to it) in Delphi 4?
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No idea of a 'proper' solution but what you could try is this:

AssignFile(data_in, <filename>);
IF IOError <> 0
  MessageDlg('File is locked', mtWarning, [mbOk], 0);


The Neil

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well, you can call WinAPI function GetLastError and check it's number

error code: 33
message: The process cannot access the file because another process has locked a portion of the file.
error code: 108
message: The disk is in use or locked by another process.

Good Luck
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