有没有办法为 Boost 产生的进程创建一个新的控制台窗口? [英] Is there a way to create a new console window for process spawned with Boost?

问题描述

我正在编写一个应用程序，它必须生成和分离一个新进程，该进程有一个单独的控制台窗口，可用于用户输入和输出.理想情况下，解决方案应该是跨平台的，使用 Boost 的解决方案会更好(因为 Boost 已在该项目中广泛使用).

I am writing an application which must spawn and detach a new process which has a separate console window which can be used for user input and output. Ideally the solution should be cross platform and a solution which uses Boost is even better (since Boost is already used extensively within this project).

我已经尝试过 boost::process::spawn 但这只会在与主进程相同的控制台窗口中启动新进程.带有 CREATE_NEW_CONSOLE 标志的 CreateProcess(在 Win-API 中)用作临时修复，但需要跨平台解决方案.

I have already tried boost::process::spawn but that only launches the new process in the same console window as the the main process. CreateProcess (in the Win-API) with the CREATE_NEW_CONSOLE flag works as a temporary fix, but a cross platform solution is desired.

推荐答案

是的，您可以通过处理程序 https://www.boost.org/doc/libs/1_64_0/doc/html/boost_process/extend.html

Yes, you can do it through handlers https://www.boost.org/doc/libs/1_64_0/doc/html/boost_process/extend.html

制作一个将 CREATE_NEW_CONSOLE 添加到 creation_flags 的处理程序:

Make a handler that adds CREATE_NEW_CONSOLE to creation_flags:

struct new_console : bp::extend::handler {
    template <typename Sequence>
    void on_setup(bp::extend::windows_executor<char, Sequence> & ex) {
        ex.creation_flags |= CREATE_NEW_CONSOLE;
    }
}

然后您可以将其用作子创建的参数:

Then you can use it as an argument for child creation:

std::error_code ec;
boost::process::child child(exe, args, new_console(), ec);

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