如何判断密钥是否已在Tkinter中释放 [英] How to tell if a key has been released in tkinter

问题描述

我正在使用此代码测试是否已按下某个键，但是我还需要一个释放键时调用的绑定.如果不存在这样的绑定，我将准备一些代码，不断检查该键是否仍在按下.

I am using this code to test whether a key has been pressed, but I also need a binding that is called when a key is released. If no such binding exists, I would settle for a bit of code that continuously checks if the key is still being pressed.

w.bind("<Key>",key)

推荐答案

当释放任何键时，它将调用onkeyrelease:

This will call onkeyrelease when any key is released:

w.bind("<KeyRelease>", onkeyrelease)

要对特定密钥的发布做出反应，您将使用

To react to a particular key's release, you would use

w.bind("<KeyRelease-key>", onkeyrelease_of_key)

其中key应替换为键的名称.

where key should be replaced by the name of the key.

这篇关于如何判断密钥是否已在Tkinter中释放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IT屋！