Usando stdin con un aloConsole ()

Question

Tengo una DLL de terceros que cargué en el software que no es mío, y estoy usando Alloconsole () para crear la ventana de CLI de Windows estándar, por lo que tengo un medio fácil de emitir mensajes de depuración.

Sin embargo, mi problema es que ignora cualquier tipo de entrada. Solo quiero poder usar la consola que asigné y habilíteme la capacidad de darle algunas entradas.

Answer 1

Thanks to Ben Voigt, I was able to cause the console to take input after I allocated it by doing:

freopen("CONIN$", "r", stdin); 
freopen("CONOUT$", "w", stdout); 
freopen("CONOUT$", "w", stderr); 

This also directs the stdout and strerr to the same console window, in case they are directed someplace else for some reason.

Answer 2

Do you also redirect the stdoutand stderrto your console?

I used this code to get access to the JavaVM output from a Windows app.

if(::AllocConsole())
    {
        int hCrt = ::_open_osfhandle((intptr_t) ::GetStdHandle(STD_OUTPUT_HANDLE), _O_TEXT);
        FILE *hf = ::_fdopen( hCrt, "w" );
        *stdout = *hf;
        ::setvbuf(stdout, NULL, _IONBF, 0 );

        hCrt = ::_open_osfhandle((intptr_t) ::GetStdHandle(STD_ERROR_HANDLE), _O_TEXT);
        hf = ::_fdopen( hCrt, "w" );
        *stderr = *hf;
        ::setvbuf(stderr, NULL, _IONBF, 0 );
    }

After this I can see all stdoutand stderr outputs from the VM.

Answer 3

This is the code that works for me:

freopen("CONOUT$", "w", stdout);

You can probably do something similar with CONIN$ and stdin (Open for read, of course).

Answer 4

This is what I use.

    FILE *file = nullptr;
freopen_s(&file,"CONIN$", "r", stdin);
freopen_s(&file, "CONOUT$", "w", stdout);

Just hopes this helps someone.