不知道这个问题有没有人遇到过？

[zhenyu362]

我用AllocConsole在别人的进程中申请了一个Console
我自己用WriteConsole可以往控制台里面写东西
我见过可以重定向控制台到文件，SetStdHandle(STD_OUTPUT_HANDLE,yourHandle) //yourHandle 可以是文件，管道，Socket...

那么能否用fprintf直接往控制台写东西呢？
怎么实现？fprintf需要一个FILE *,而AllocConsole得到的是一个HANDLE

[zhenyu362]

#include <windows.h>

#include <stdio.h>

#include <fcntl.h>

#include <io.h>

#include <iostream>

#include <fstream>

#ifndef _USE_OLD_IOSTREAMS

using namespace std;

#endif

// maximum mumber of lines the output console should have

static const WORD MAX_CONSOLE_LINES = 500;


void RedirectIOToConsole()

{

int hConHandle;

long lStdHandle;

CONSOLE_SCREEN_BUFFER_INFO coninfo;

FILE *fp;

// allocate a console for this app

AllocConsole();

// set the screen buffer to be big enough to let us scroll text

GetConsoleScreenBufferInfo(GetStdHandle(STD_OUTPUT_HANDLE),

&coninfo);

coninfo.dwSize.Y = MAX_CONSOLE_LINES;

SetConsoleScreenBufferSize(GetStdHandle(STD_OUTPUT_HANDLE),

coninfo.dwSize);

// redirect unbuffered STDOUT to the console

lStdHandle = (long)GetStdHandle(STD_OUTPUT_HANDLE);

hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);

fp = _fdopen( hConHandle, "w" );

*stdout = *fp;

setvbuf( stdout, NULL, _IONBF, 0 );

// redirect unbuffered STDIN to the console

lStdHandle = (long)GetStdHandle(STD_INPUT_HANDLE);

hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);

fp = _fdopen( hConHandle, "r" );

*stdin = *fp;

setvbuf( stdin, NULL, _IONBF, 0 );

// redirect unbuffered STDERR to the console

lStdHandle = (long)GetStdHandle(STD_ERROR_HANDLE);

hConHandle = _open_osfhandle(lStdHandle, _O_TEXT);

fp = _fdopen( hConHandle, "w" );

*stderr = *fp;

setvbuf( stderr, NULL, _IONBF, 0 );


// make cout, wcout, cin, wcin, wcerr, cerr, wclog and clog

// point to console as well

ios::sync_with_stdio();

}
fprintf(stdout,"Hello world");
找到这么一个例子，但是测试发现控制台根本不显示"Hello world"

[痞子酷]

fprintf(stdout,"Hello world");
改为：
fprintf(fp"Hello world");


呵呵～～～接分

[痞子酷]

fprintf(stdout,"Hello world");
改为
fprintf(fp,"Hello world");


呵呵～～～接分