如何将密钥而不是字符发送到进程? [英] How to send keys instead of characters to a process?

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_EVENT 或 CTRL_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);

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