?
Solved

How to trap 'Access Denied' with CopyFile

Posted on 2003-11-03
4
Medium Priority
?
959 Views
Last Modified: 2008-03-17
Hello,
I am using the CopyFile API function to copy a file from the user's machine to a network directory.  Under most circumstances it should work fine, but I have identified two conditions where it might fail and I need to be able to trap them:
1. the destination file already exists (in which case I need to prompt them for the next step - it may be overwrite, it may be rename, it may be cancel, up to them)
2. they don't have write access to this network directory (in which case I need to throw an error and bail)

All I have been able to do so far is test if CopyFile(parameters) = 0, but this doesn't tell me very much.

By the way here is the declaration in case it helps.
Private Declare Function CopyFile Lib "kernel32" Alias "CopyFileA" _
(ByVal lpExistingFileName As String, ByVal lpNewFileName As String, _
ByVal bFailIfExists As Long) As Long

Thanks for your help
0
Comment
Question by:pteehan
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
4 Comments
 
LVL 48

Expert Comment

by:AlexFM
ID: 9671405
Call GetLastError API immidiately after CopyFile:

Public Declare Function GetLastError Lib "kernel32" Alias "GetLastError" () As Long

If it returns 5, this means Access is Denied.
0
 
LVL 48

Accepted Solution

by:
AlexFM earned 500 total points
ID: 9671479
Read also this article which gives the generic solution:

http://www.freevbcode.com/ShowCode.Asp?ID=507
0
 
LVL 48

Expert Comment

by:Mikal613
ID: 9671663
Put this abel in that form.
on error goto ErrHanlder:

ErrHandler:
If err.number = 70 or err.number = 75 then
 'Ignores Access Denied
end if
0
 
LVL 2

Author Comment

by:pteehan
ID: 9671957
Thanks AlexFM.
GetLastError didn't seem to work but from the article you linked I noticed Err.LastDllError - this is what I needed.  Exactly what I was looking for!
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

When trying to find the cause of a problem in VBA or VB6 it's often valuable to know what procedures were executed prior to the error. You can use the Call Stack for that but it is often inadequate because it may show procedures you aren't intereste…
Article by: Martin
Here are a few simple, working, games that you can use as-is or as the basis for your own games. Tic-Tac-Toe This is one of the simplest of all games.   The game allows for a choice of who goes first and keeps track of the number of wins for…
As developers, we are not limited to the functions provided by the VBA language. In addition, we can call the functions that are part of the Windows operating system. These functions are part of the Windows API (Application Programming Interface). U…
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
Suggested Courses
Course of the Month13 days, 9 hours left to enroll

801 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question