Solved

Problem with WinInet

Posted on 1998-07-09
4
284 Views
Last Modified: 2012-06-27
I've got a function in a CDocument derived class CFtpDoc which attempts to
get the current directory.

Got some reason, whenever I try to GetCurrentDirectory() or
GetCurrentDirectoryAsURL() I get an error.  When I call GetLastError() as
below, I get a value 997. I have looked it up in WinError.h -->
ERROR_IO_PENDING.  What does this mean??

Regards

Oscar

void CFtpDoc::GetFtpCurDir(CString& str)
{
TCHAR strDirectory[5];
LPTSTR lpStr=strDirectory;
CString str1="Hello";

BOOL b=m_pFtpConnection->GetCurrentDirectory(str1);

#ifdef _DEBUG
TRACE("Last error was: %d\n", GetLastError());
#endif //_DEBUG

str+= szURLftp;
str+= m_pFtpConnection->GetServerName();

if (strDirectory[0] != '/')
  lstrcat(lpStr,_T("/"));

str+=strDirectory;

}
0
Comment
Question by:ossentoo
[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 2

Expert Comment

by:lucidity
ID: 1167514
You  have to do something else with the way your pass str1

I don't know off hand but something like.

BOOL b=m_pFtpConnection->GetCurrentDirectory(str1);
-OR-
BOOL b=m_pFtpConnection->GetCurrentDirectory((CSTRING&)str1);


0
 
LVL 2

Expert Comment

by:lucidity
ID: 1167515
first one should have been

BOOL b=m_pFtpConnection->GetCurrentDirectory(&str1);
0
 
LVL 11

Expert Comment

by:alexo
ID: 1167516
Allocate more space for str1 (str1="Hello" is just not enough...)

0
 
LVL 11

Accepted Solution

by:
mikeblas earned 50 total points
ID: 1167517
Did you constrcut any of the objects in your connection hierarchy using FLAG_ASYNC?  That's the educated guess I'd give you.

While you are, indeed, not appropriately handling the string buffer, buffer sizes obviously have no relation to an IO_PENDING error. To solve your buffer problems, you shouldn't do any of the hokey casts these guys have suggested. You should, instead, call the LPTSTR override of GetCurrentDirectory(), like this:

   BOOL b = m_pFtpConnection->GetCurrentDirectory(strDirectory, 5);

or you should use a CString:

   CString str;
   BOOL b = m_pFtpConnection->GetCurrentDirectory(str);

From the looks of your code, you're really struggling with the notion of pointers; perhaps, before you go any further, you should complete a C++ tutorial.

If you're, indeed, using INTERNET_FLAG_ASYNC, your code is broken. Clearly, from the code you've written, you'll not benefit from ASYNC internet access--your program is dependant on getting an answer from a call before it can continue doing any other work. If your program would benefit from async access, it would have other things to go and do while waiting for a response.

If you want to rearchitect your program to do ASYNC access, see the KB article at http://support.microsoft.com/support/kb/articles/q164/9/83.asp

By the way, most people ask MFC questions in the MFC area.

B ekiM

0

Featured Post

Technology Partners: 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 writing generic code, using template meta-programming techniques, it is sometimes useful to know if a type is convertible to another type. A good example of when this might be is if you are writing diagnostic instrumentation for code to generat…
This article shows you how to optimize memory allocations in C++ using placement new. Applicable especially to usecases dealing with creation of large number of objects. A brief on problem: Lets take example problem for simplicity: - I have a G…
The goal of the tutorial is to teach the user how to use functions in C++. The video will cover how to define functions, how to call functions and how to create functions prototypes. Microsoft Visual C++ 2010 Express will be used as a text editor an…
The viewer will learn how to clear a vector as well as how to detect empty vectors in C++.

752 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