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Dim FileSize As Long
FileSize& = FileLen("C:\SOMEFILE.TXT")
msgbox filesize& & " bytes"
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Const GENERIC_READ = &H80000000
Const FILE_SHARE_READ = &H1
Const OPEN_EXISTING = 3
Const FILE_TYPE_CHAR = &H2
Const FILE_TYPE_DISK = &H1
Const FILE_TYPE_PIPE = &H3
Const FILE_TYPE_UNKNOWN = &H0
Private Declare Function CreateFile Lib "kernel32" Alias "CreateFileA" (ByVal lpFileName As String, ByVal dwDesiredAccess As Long, ByVal dwShareMode As Long, lpSecurityAttributes As Any, ByVal dwCreationDisposition As Long, ByVal dwFlagsAndAttributes As Long, ByVal hTemplateFile As Long) As Long
Private Declare Function GetFileSizeEx Lib "kernel32" (ByVal hFile As Long, lpFileSize As Currency) As Boolean
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
Private Sub Form_Load()
Private Function FileSize(ByVal strFilePath As String) As Currency
Dim hFile As Long, nSize As Currency, sSave As String
hFile = CreateFile(strFilePath, GENERIC_READ, FILE_SHARE_READ, ByVal 0&, OPEN_EXISTING, ByVal 0&, ByVal 0&)
GetFileSizeEx hFile, nSize
FileSize = nSize * 10000
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