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This routine will copy a file while providing a means to support a percent gauge.Error support is provided.

src = Source file name (including path if necessary)
dst = Destination file name (including path if necessary)
Returns:The function returns the size of the original file on success, 0 on failure.
Assumes: The PercentDone may be a Label, or a ProgressBar, or your own custom design. The example has commented
code for a Label named PercentDone. Otherwise, you may call your custom routine to display the progress at that point.
Side Effects: If the destination file already exists, a message box will prompt the user.

Function CopyFile (src As String, dst As String) As Single
Static Buf$
Dim BTest!, FSize!
Dim Chunk%, F1%, F2%
Const BUFSIZE = 2048 'A larger BUFSIZE is best, but do not attempt to exceed 64 K (60000 would be fine)
If Dir(src) = "" Then MsgBox "File not found"
Exit Function
End If
If Len(Dir(dst)) Then
If MsgBox(UCase(dst) & Chr(13) & Chr(10) & "File exists. Overwrite?", 4) = 7 Then Exit Function
Kill dst
End If
On Error Goto FileCopyError
F1 = FreeFile
Open src For Binary As F1
F2 = FreeFile
Open dst For Binary As F2
FSize = LOF(F1)
BTest = FSize - LOF(F2)
Do
If BTest < BUFSIZE Then
Chunk = BTest
Else
Chunk = BUFSIZE
End If
Buf = String(Chunk, " ")
Get F1, , Buf
Put F2, , Buf
BTest = FSize - LOF(F2)
' __Call percent display here__
'PercentDone.Caption = ( 100 - Int(100 * BTest/FSize) )
'PercentDone.Refresh
Loop Until BTest = 0
Close F1
Close F2
CopyFile = FSize
Exit Function

FileCopyError:
MsgBox "Copy Error!"
Close F1
Close F2
End Function
 CopyFile

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