?
Solved

Directory Copying

Posted on 1998-08-20
6
Medium Priority
?
228 Views
Last Modified: 2010-04-30
What is the *simplest* way to copy an entire directory structure (and its files) from one drive to another?
0
Comment
Question by:IsleOfView
[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
  • 3
  • 3
6 Comments
 
LVL 12

Expert Comment

by:mark2150
ID: 1430076
SHELL("XCOPY " & dirspec & " " & target & " /S /E ", 1)

0
 

Author Comment

by:IsleOfView
ID: 1430077
Maybe I was a little too blunt with the "Simplest" comment.  I want to have this accomplished in VB.
0
 
LVL 12

Expert Comment

by:mark2150
ID: 1430078
SHELL command *IS* VB. No shame in using existing machine resource.

Are you coding for fun or $$$?

If you're coding in *MY* shop for $$$ then this is simplest, most reliable solution. Least cost to implement, little to debug. This produces the desired result, no? So why is not "correct" answer. No need to re-invent the wheel.

If you're coding for fun, then by all means, write a couple of pages of code.

0
What does it mean to be "Always On"?

Is your cloud always on? With an Always On cloud you won't have to worry about downtime for maintenance or software application code updates, ensuring that your bottom line isn't affected.

 

Author Comment

by:IsleOfView
ID: 1430079
How can I make VB wait for the shell command to finish execution?  (and close the DOS window).  I would prefer this to happen from within VB, as this is going to a large customer base and the thought is that it would be more professional without DOS windows popping up all over the place...
0
 

Author Comment

by:IsleOfView
ID: 1430080
I really need this to work through the API.
0
 
LVL 12

Accepted Solution

by:
mark2150 earned 400 total points
ID: 1430081
Ahhh, making VB wait for a child task to complete requires some code but does work well. This was lifted wholesale from the M$ web site:

'
' These data type declarations are required to support the obscure windows
' function to spawn a child task and wait for it to finish before continuing
'
Private Type STARTUPINFO
    cb As Long
    lpReserved As String
    lpDesktop As String
    lpTitle As String
    dwX As Long
    dwY As Long
    dwXSize As Long
    dwYSize As Long
    dwXCountChars As Long
    dwYCountChars As Long
    dwFillAttribute As Long
    dwFlags As Long
    wShowWindow As Integer
    cbReserved2 As Integer
    lpReserved2 As Long
    hStdInput As Long
    hStdOutput As Long
    hStdError As Long
End Type
'
Private Type PROCESS_INFORMATION
    hProcess As Long
    hThread As Long
    dwProcessID As Long
    dwThreadID As Long
End Type
'
Private Declare Function WaitForSingleObject Lib "kernel32" (ByVal hHandle As Long, _
    ByVal dwMilliseconds As Long) As Long
'
Private Declare Function CreateProcessA Lib "kernel32" ( _
    ByVal lpApplicationName As Long, _
    ByVal lpCommandLine As String, _
    ByVal lpProcessAttributes As Long, _
    ByVal lpThreadAttributes As Long, _
    ByVal bInheritHandles As Long, _
    ByVal dwCreationFlags As Long, _
    ByVal lpEnvironment As Long, _
    ByVal lpCurrentDirectory As Long, _
    lpStartupInfo As STARTUPINFO, _
    lpProcessInformation As PROCESS_INFORMATION) As Long
'
Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long
'
Const NORMAL_PRIORITY_CLASS = &H20&
Const INFINITE = -1&
'
' I don't really understand the above declares, but they do work so DON'T MESS WITH THEM!
'
'
Public Sub ExecCmd(cmdline$)
'
' This executes an external windows program and waits for it to complete
'
Dim proc As PROCESS_INFORMATION
Dim start As STARTUPINFO
'
' Initialize the STARTUPINFO structure:
'
start.cb = Len(start)
'
' Start the shelled application
'
ret& = CreateProcessA(0&, cmdline$, 0&, 0&, 1&, NORMAL_PRIORITY_CLASS, 0&, 0&, start, proc)
'
' Wait for the shelled application to finish:
'
holdhere:
    DoEvents
    ret& = WaitForSingleObject(proc.hProcess, 5000)
    If ret& <> 0 Then GoTo holdhere
'
ret& = CloseHandle(proc.hProcess)
End Sub

Call the above with:

ExecCmd cmdstring

Where CMDSTRING is "XCOPY " & dirspec & " " & target & " /S /E "
0

Featured Post

Industry Leaders: 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

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…
Enums (shorthand for ‘enumerations’) are not often used by programmers but they can be quite valuable when they are.  What are they? An Enum is just a type of variable like a string or an Integer, but in this case one that you create that contains…
Get people started with the process of using Access VBA to control Excel using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Excel. Using automation, an Access application can laun…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…
Suggested Courses

764 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