Solved

How to compile 32 bit app that uses Wow64DisableWow64FsRedirection with BDS 2006

Posted on 2009-05-19
8
1,390 Views
Last Modified: 2013-11-17
Hello, I'm trying to compile my 32 bit application written with the C plus plus builder personality of BDS 2006.

The problem is that I need to use the API function Wow64DisableWow64FsRedirection. MSDN states that _WIN32_WINNT must be defined to 0x0501 or higher, but if I do such definition, the compiler gives me the following error:

[C++ Error] Windows.hpp(2435): E2040 Declaration terminated incorrectly

This error is related to this definition:

static const Shortint WTS_CONSOLE_CONNECT = 0x1;

Many errors like this follows the first. I cannot understand why the compiler gives me the error. If I avoid to redefine _WIN32_WINNT everything compiles except the point where I use the needed function.

Any ideas?

Thanks in advance.
0
Comment
Question by:uuderzo
  • 3
  • 3
8 Comments
 
LVL 86

Accepted Solution

by:
jkr earned 500 total points
ID: 24433795
You can circumvent that by loading 'Wow64DisableWow64FsRedirection()' dynamically from kernel32.dll, e.g.
typedef BOOL WINAPI (*FPTR_Wow64DisableWow64FsRedirection)(PVOID*);
typedef BOOL WINAPI (*FPTR_Wow64RevertWow64FsRedirection)(PVOID);
 
// ...
 
PVOID pOldValue;
 
FPTR_Wow64DisableWow64FsRedirection pWow64DisableWow64FsRedirection = GetProcAddress(GetModuleHandle(_T("kernel32.dll"),_T("Wow64DisableWow64FsRedirection"));
FPTR_Wow64RevertWow64FsRedirection pWow64RevertWow64FsRedirection = GetProcAddress(GetModuleHandle(_T("kernel32.dll"),_T("Wow64RevertWow64FsRedirection"));
 
(*pWow64DisableWow64FsRedirection)(&pOldValue);
 
// do stuff
 
(*pWow64RevertWow64FsRedirection)(pOldValue);

Open in new window

0
 

Author Comment

by:uuderzo
ID: 24435690
Wow! That works!
Thank you very much for your solution!

But... just to know... is there a reason of this malfunction? Is it the compiler or the header file?

Thanks again!
0
 

Author Closing Comment

by:uuderzo
ID: 31582955
I'd never tought to this approach. Nice one, even if I still wonder why the compiler gives me that error.
0
PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

 
LVL 86

Expert Comment

by:jkr
ID: 24435719
Not sure about Borland compilers - if you really want to find ut why that happens, have the preprocessor expand the whole header set and have a look at the lines before that specific error.
0
 
LVL 86

Expert Comment

by:jkr
ID: 24437610
Hum, as a closing word - that should be
typedef BOOL WINAPI (*FPTR_Wow64DisableWow64FsRedirection)(PVOID*);
typedef BOOL WINAPI (*FPTR_Wow64RevertWow64FsRedirection)(PVOID);
 
// ...
 
PVOID pOldValue;
 
FPTR_Wow64DisableWow64FsRedirection pWow64DisableWow64FsRedirection =
(FPTR_Wow64DisableWow64FsRedirection)GetProcAddress(GetModuleHandle(_T("kernel32.dll"),_T("Wow64DisableWow64FsRedirection"));
FPTR_Wow64RevertWow64FsRedirection pWow64RevertWow64FsRedirection = 
(FPTR_Wow64RevertWow64FsRedirection)GetProcAddress(GetModuleHandle(_T("kernel32.dll"),_T("Wow64RevertWow64FsRedirection"));
 
(*pWow64DisableWow64FsRedirection)(&pOldValue);
 
// do stuff
 
(*pWow64RevertWow64FsRedirection)(pOldValue);

Open in new window

0
 

Author Comment

by:uuderzo
ID: 24440310
You're right, the typecast was missing in your answer.
No matter, I managed to make it working.

Thank you for your correction.
0

Featured Post

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
How to programmatically differentiate between C and Java 10 200
How to split this in C++ 4 104
Best book to learn C++ 4 80
Online file editor, manager 6 77
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…
Basic understanding on "OO- Object Orientation" is needed for designing a logical solution to solve a problem. Basic OOAD is a prerequisite for a coder to ensure that they follow the basic design of OO. This would help developers to understand the b…
This tutorial covers a step-by-step guide to install VisualVM launcher in eclipse.
The viewer will learn how to synchronize PHP projects with a remote server in NetBeans IDE 8.0 for Windows.

831 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