Home/ Questions/Q 96467
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-10T23:49:10+00:00

How do I check if a file is already used by another process from

  • 0

How do I check if a file is already used by another process from Powerscript ?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. The best way that I found is to call the WinAPI CreateFile to open a given file in exclusive mode.

    First, declare the following Local External Function (PB10)

    FUNCTION Long CreateFile(ref string lpszName, long fdwAccess, long fdwShareMode, long lpsa, & long fdwCreate, long fdwAttrsAndFlags, long hTemplateFile) LIBRARY 'Kernel32.dll' & ALIAS FOR 'CreateFileA;Ansi' FUNCTION boolean CloseHandle (long file_hand) LIBRARY 'KERNEL32.DLL'

    then from Powerscript : 

    CONSTANT ulong GENERIC_ACCESS = 268435456  //  &H10000000 CONSTANT ulong EXCLUSIVE_ACCESS = 0 CONSTANT ulong OPEN_EXISTING = 3  long ll_handle String ls_file   ls_file = 'c:\temp\myfile.xls'  ll_handle = CreateFile ( ls_file, GENERIC_ACCESS, EXCLUSIVE_ACCESS,  0, OPEN_EXISTING, 0, 0)  IF ll_handle < 1 THEN      MessageBox('', 'Can't open, maybe missing or already opened ?!?') ELSE     MessageBox('','File can be opened') END IF  CloseHandle(ll_handle)
    • 0