guicon.cpp

#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;
#ifdef _DEBUG

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();
}
#endif
//End of File