Change file attributes?

Posted on 2004-09-22
Medium Priority
Last Modified: 2011-09-20
I have a text file that I add entries to, through my code.
Unfortunately, the file is stored in a folder where it 'might' get deleted.  I'd like to make it RO, but that would prohibit my code from opening it for append.  How can I remove the RO and then readd it in VB6?
Question by:sirbounty
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Expert Comment

ID: 12122080
There is SetFileAttributes API

Const READONLY = &H1
Const HIDDEN = &H2
Const SYSTEM = &H4
Const ARCHIVE = &H20
Const NORMAL = &H80
Private Declare Function SetFileAttributes Lib "kernel32.dll" Alias "SetFileAttributesA" (ByVal lpFileName As String, ByVal dwFileAttributes As Long) As Long

Private Sub Form_Load()
Dim attr As Long
Dim rval As Long
rval = SetFileAttributes(YoorFile, attr)
End Sub
LVL 53

Accepted Solution

Dhaest earned 500 total points
ID: 12122101
You can try to do this:

SetAttr "TESTFILE", vbNormal

SetAttr "TESTFILE", vbReadOnly     ' Set read-only
LVL 53

Expert Comment

ID: 12122108
SetAttr Statement

Description - Sets attribute information for a file.
Syntax - SetAttr pathname,attributes

The SetAttr statement syntax has these named-argument parts:
Part - Description
pathname -  String expression that specifies a file name — may include directory or folder, and drive.
attributes - Constant or numeric expression, the sum of which specifies file attributes.

Constants and values for attributes are:
vbNormal - 0 - Normal (default).
vbReadOnly - 1 Read-only.
vbHidden - 2 - Hidden.
vbSystem - 4 - System — not available on the Macintosh.
vbArchive - 32 - File has changed since last backup — not available on the Macintosh.


These constants are specified by Visual Basic. As a result, the names can be used anywhere in your code in place of the actual values.

A run-time error occurs if you try to set the attributes of an open file.

See Also
FileAttr Function, GetAttr Function.
This example uses the SetAttr statement to set attributes for a file.
SetAttr "TESTFILE", vbHidden    ' Set hidden attribute.
SetAttr "TESTFILE", vbHidden + vbReadOnly    ' Set hidden and Read-only
    ' attributes.
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LVL 67

Author Comment

ID: 12123504
Dhaest - love the simple solution!
However, I'm curious is it a complete change?
For instance, if I have RASH - and I use vbNormal - is that now 'no' attribs?
If it's none and I wanted to specify HS - is it just A + B (or 6)?
LVL 67

Author Comment

ID: 12169349
LVL 53

Expert Comment

ID: 12169381
About your question, I'm not sure. I guess the easiest way to find out is to test it. I just needed like the cases above.

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