JS code to determine if a file is being used

Source: Internet
Author: User

This article mainly introduces the decision whether the file is being used in the JS code, the need for friends can refer to

The code is as follows://Determine if the file is being used function Fileinuse (filename:string): boolean; var usein:file;   Begin Result:=false;   AssignFile (Usein,filename);   Try Reset (Usein);         Except on E:einouterror do BEGIN if e.errorcode=32 then BEGIN result:=true;       Exit     End   End   End CloseFile (Usein);   End   Procedure Tform1.button1click (Sender:tobject);       If Opendialog1.execute then BEGIN if Fileinuse (Opendialog1.filename) then ShowMessage (' file in use ') else   ShowMessage (' no use '); End
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