AttachConsole错误5：访问被拒绝

问题描述

我在Visual Studio 2013中使用C ++控制台应用程序，在Windows上工作。

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

首先我使用 FreeConsole卸载控制台，它工作;然后，将 AllocConsole 命名为建议，返回 true 意味着成功;最后，我尝试使用 AttachConsole 附加它，但没有发生任何事 -

First I detached the console using FreeConsole, it works; then, called AllocConsole as FreeConsole then AttachConsole not working suggested, returns true meaning success; last, 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
bool succeed = AllocConsole(); //succeeded.
succeed = AttachConsole(winpid); // return false: failed.
if (!succeed)
    LastError = GetLastError(); // Error Code 5

：

ERROR_ACCESS_DENIED
5 (0x5)
Access is denied.

如何正确连接控制台？

推荐答案

在AttachConsole之前删除AllocConsole调用。

Remove the AllocConsole call before AttachConsole.

从：
一个进程最多可以附加到一个控制台。如果调用进程已附加到控制台，则返回的错误代码为ERROR_ACCESS_DENIED（5）。

From the documentation:A process can be attached to at most one console. If the calling process is already attached to a console, the error code returned is ERROR_ACCESS_DENIED (5).

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