Solved

Opening Files with UNC Names

Posted on 1997-10-15
1
719 Views
Last Modified: 2008-03-06
Is there a function in Microsoft Visual C/C++ 4.2 that will open a file if I send it:

\\SERVER\VOLUME\DIRECTORY\FILENAME

I am in the process of trying CreateFile, but it doesn't look like that supports UNC...

Any help would be greatly appreciated.

0
Comment
Question by:tward
[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
1 Comment
 
LVL 5

Accepted Solution

by:
y96andha earned 100 total points
ID: 1255907
All functions I know in MSVC++ 4.0 support UNC paths. CreateFile does, open does, fopen does. There is even a note in the CreateFile documentation that you can enter UNC paths with lengths of up to 32k:

Windows NT: You can transcend this limit and send in paths longer than MAX_PATH characters by calling the wide (W) version of CreateFile and prepending "\\?\" to the path. The "\\?\" tells the function to turn off path parsing. This lets you use paths that are nearly 32k Unicode characters long. You must use fully-qualified paths with this technique. This also works with UNC names. The "\\?\" is ignored as part of the path. For example, "\\?\C:\myworld\private" is seen as "C:\myworld\private", and "\\?\UNC\tom_1\hotstuff\coolapps" is seen as "\\tom_1\hotstuff\coolapps".


But, with paths of normal lengths, you can just send them in.
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

This tutorial is posted by Aaron Wojnowski, administrator at SDKExpert.net.  To view more iPhone tutorials, visit www.sdkexpert.net. This is a very simple tutorial on finding the user's current location easily. In this tutorial, you will learn ho…
This is a short and sweet, but (hopefully) to the point article. There seems to be some fundamental misunderstanding about the function prototype for the "main" function in C and C++, more specifically what type this function should return. I see so…
The goal of this video is to provide viewers with basic examples to understand opening and writing to files in the C programming language.
The goal of this video is to provide viewers with basic examples to understand and use conditional statements in the C programming language.

691 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