FreeConsole，然后AttachConsole无法正常工作

Question

I'm working with a C++ Console Application in Visual Studio 2013, working on Windows.

First I detached the console using FreeConsole, it works; then, I tried to attach it back using AttachConsole, but nothing happened --

#include <psapi.h>

DWORD winpid = GetCurrentProcessId(); // get pid
std::cout << winpid; // it works    
FreeConsole(); // console lost
std::cout << "Lost to the bit bucket"; //nothing happen, as expected
AttachConsole(winpid); // try find the console back....
std::cout << "c"; // ... but failed

How could I find the lost Console back?

Answer 1

When you called FreeConsole(), your console ceases to exist. You cannot call AttachConsole() because there is nothing to attach to. You should instead use AllocConsole() to create a new console and then "attach" to it like so:

AllocConsole();
FILE* f;
freopen_s(&f, "CONOUT$", "w", stdout);

Then to free the console later on:

fclose(f);
FreeConsole();