如何将密钥而不是字符发送到进程?

How to send keys instead of characters to a process?(如何将密钥而不是字符发送到进程?)
本文介绍了如何将密钥而不是字符发送到进程?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

System.Diagnostics.Process 公开了一个名为 StandardInput 的 StreamWriter,据我所知,它只接受字符.

System.Diagnostics.Process exposes a StreamWriter named StandardInput, which accepts only characters as far as I know.

但我也需要发送击键,有些击键不能很好地映射到字符.

But I need to send keystrokes as well, and some keystrokes don't map well to characters.

我该怎么办?

推荐答案

您正在将输入流与控制信号混合.如您所知,控制台进程有一个默认输入流,您可以使用 StandardInput 控制该输入流.但是 Ctrl-C 和 Ctrl-Break 不是通过此流发送到进程的字符,而是进程使用注册的信号处理程序接收的控制信号,请参见 CTRL+C 和 CTRL+BREAK 信号:

You are mixing input streams with control signals. A console process has a default input stream which you can control with the StandardInput, as you already know. But Ctrl-C and Ctrl-Break are not characters sent to the process through this stream, but instead they are instead control signals that the process receives using the registered signal handlers, see CTRL+C and CTRL+BREAK Signals:

默认情况下,当控制台窗口有键盘焦点,CTRL+C 或CTRL+BREAK 被视为信号(SIGINT 或 SIGBREAK) 而不是键盘输入.

By default, when a console window has the keyboard focus, CTRL+C or CTRL+BREAK is treated as a signal (SIGINT or SIGBREAK) and not as keyboard input.

要向进程发送虚假信号,您可以使用 GenerateConsoleCtrlEvent 并发送 CTRL_C_EVENTCTRL_BREAK_EVENT.此 API 没有 .Net 等效项,因此您必须 PInvoke 它.

To send fake signals to a process you can use GenerateConsoleCtrlEvent and send either CTRL_C_EVENT or CTRL_BREAK_EVENT. This API has no .Net equivalent, so you have to PInvoke it.

要在 .NET 中使用它,您只需包含函数定义:

To use it from .NET you simply need to include the function definition:

const int CTRL_C_EVENT = 0;
const int CTRL_BREAK_EVENT = 1;

[DllImport("kernel32.dll")]
static extern bool GenerateConsoleCtrlEvent(
    uint dwCtrlEvent,
    uint dwProcessGroupId);

这篇关于如何将密钥而不是字符发送到进程?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持编程学习网!

本站部分内容来源互联网,如果有图片或者内容侵犯您的权益请联系我们删除!

相关文档推荐

DispatcherQueue null when trying to update Ui property in ViewModel(尝试更新ViewModel中的Ui属性时DispatcherQueue为空)
Drawing over all windows on multiple monitors(在多个监视器上绘制所有窗口)
Programmatically show the desktop(以编程方式显示桌面)
c# Generic Setlt;Tgt; implementation to access objects by type(按类型访问对象的C#泛型集实现)
InvalidOperationException When using Context Injection in ASP.Net Core(在ASP.NET核心中使用上下文注入时发生InvalidOperationException)
LINQ many-to-many relationship, how to write a correct WHERE clause?(LINQ多对多关系,如何写一个正确的WHERE子句?)