我如何捕获keydown值. [英] How can i capture keydown value .

问题描述

我已经创建了一个Windows应用程序，可以捕获keydown或keypress值.

它有一个局限性，即当我在Windows应用程序中按下或按下按键时，它可以捕获按键按下值.

但是，当我在记事本或其他应用程序中按下键盘时，则无法捕获按下键盘的值.

我想在任何地方捕获任何keydown值.

例如.我在记事本中键入内容，那么那时我的应用程序还将捕获我在notepade中键入内容的keydown值.

I have create a windows application that can capture the keydown or keypress value.

It has a limitation that is when I Keypress or keydown within a windows application then it can capture keydown value.

However, when I keydown in notepad or some other application then it cannot capture keydown value.

I want to capture any keydown value any where.

Eg. I am typing in notepad then that time my application will also capture that keydown value of what I am typing in the notepade.

Please anyone help me as I am new to C#.

推荐答案

KeyDown (和KeyPress)事件仅用于实现这些事件的控件，请有人帮我.上.这些将不适用于任何其他控件或程序.

The KeyDown (and KeyPress) events are only for the control that you have implemented these events on. These will not work for any other control or program.

您可以使用键盘挂钩(通过Windows API使用非常复杂的技术)，例如:

• MSDN上的挂钩概述 [如何在C#中设置低级鼠标钩和键盘钩? [ ^ ].
• 低C#中的高级键盘钩 [ ^ ].
  

You may use a keyboard hook (quite complex technique, via Windows API) see, for instance:

• Hooks Overview at MSDN[^].
• How do I set a low level mouse hook and keyboard hook in C#?[^].
• Low-Level Keyboard Hook in C#[^].
  

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