How to redirect and log the output of the VC++ console to a file?

Question

I have developed an application(managed + unmanaged) in VC++ using Visual Studio 2005. IT can switch to either Console or to windows form depending upon the no of parameters passed to the application on command prompt console. Its basicall a windows application but console has been implemented with the help of Attachconsole(), allocconsole() & freeconsole().

Now if i run a batch file, using command prompt console, all the output messages of the application can be seen on the console as shown below.

c:\test> testapp -f filename -l operationname -t otherparams
filename selected..
operation in progress..
operation completed successfully!!

 But if i redirect the output of the console to a text file, i dont see any messages in the text file once the operation is complete.
for eg:

c:\test> testapp -f filename -l operationname -t otherparams >> logfile.txt

Clarifications i need are
1> am i missing something to log it in a text file?
2> Can output messages from the console be logged in such a fashion. if yes, how?

Thanks in advance for help/suggestions on the same.

Answer 1

Are you saying that the lines do not appear *anywhere* when you use redirection?
Not in the file and not on the screen?

What method are you using to send the messages to the console? (printf(), other?)

- Wayne

Answer 2

Yeah, I am not able to see the output messages of the application neither on console nor in the redirected text file.

Am using 

//to open the console

if(!AttachConsole(ATTACH_PARENT_PROCESS))

AllocConsole();

//to print it on the console.

console::Write() 

But peculiar thing is , if i dont redirect the messages to a text file, i can see the messages on the console.

Any hint?

Answer 3

Getting the impression that either VC++ has been phased out or no takers for VC++.  NO responses for all 3(different) of my posts.

Anyway, found out myself that Console created along with windows form is not the standard console we use in Win32 applications. Hence redirection of stder, stdout & stdin can be done by using Console::SetError, Console::Setout & Console::Setin correspondingly. If redirection to be used to log the stdout, then Streamwriter() has to be used i.e

Streamwriter^ pStream = gcnew Streamwriter(log.txt)

Console::Setout(pStream );  <---------This configures the stdout

now on anything written using Console::Write() or Console::Writeline() is written to log.txt

Similarly, stdin and stder can be configured and used too.