如何在系统级别触摸任何输入设备时如何触发按键或鼠标点击事件？ [英] How can I fire a key press or mouse click event without touching any input device at system level?

问题描述

解决方案

这取决于你想要的东西。您要将密钥发送到

• 您的应用


• 另一个固定应用


• 模拟全局按键

全局模拟键

所有这些都将导致针对特定应用程序的问题，活动窗口更改。

• SendKeys 发送消息到活动的应用程序。这是一个高级功能，采用一个编码一系列密钥的字符串。




• keybd_event 是非常低的级别，并注入全球按键。在大多数情况下， SendKeys 更容易使用。




• mouse_event 模拟鼠标输入。




• SendInput 取代了这些功能。

发送到特定窗口

当使用固定的目标窗口时，发送邮件可以根据窗口的工作原理工作。但由于此不更新所有状态它可能不总是奏效但是，您不需要改变窗口焦点，这是值得的。

• WM_CHAR 在基本的多语言平面（16位）中发送一个字符


• WM_UNICHAR 发送支持整个unicode范围的字符


• WM_KEYDOWN 和 WM_KEYUP 通过键盘布局发送将被翻译成字符的键。






我的建议是指向特定的窗口/应用程序时首先尝试使用消息，并且只有在失败时尝试使用较低级别的解决方案。




How can I fire an automatic key press or mouse click event when a color appears on the screen on other application or browser?

解决方案

It depends a lot on what you want. Do you want to send the keys to

• your Application
• another fixed Application
• Simulate a global keypress

Simulating keys globally

All of these will cause problems targeting a specific application and the active window changes.

• SendKeys Sends Messages to the active app. It's a high level function taking a string which encodes a sequence of keys.

• keybd_event is very low level and injects a global keypress. In most cases SendKeys is easier to use.

• mouse_event simulates mouse input.

• SendInput supersedes these functions. It's more flexible but a bit harder to use.

Sending to a specific window

When working with a fixed target window, sending it messages can work depending on how the window works. But since this doesn't update all states it might not always work. But you don't have a race condition with changing window focus, which is worth a lot.

• WM_CHAR sends a character in the basic multilingual plane (16 bit)
• WM_UNICHAR sends a character supporting the whole unicode range
• WM_KEYDOWN and WM_KEYUP Sends keys which will be translated to characters by the keyboard layout.

My recommendation is when targeting a specific window/application try using messages first, and only if that fails try one of the lower level solutions.

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