检测键是否被按下一次 [英] Detect if key was pressed once

问题描述

我想做一个动作，只要按下我的 f 键.问题是它会向操作发送垃圾邮件.

I wanted to do an action, as soon as my f key is pressed. The problem is that it spams the action.

import win32api

while True:
    f_keystate = win32api.GetAsyncKeyState(0x46)

    if f_keystate < 0:
        print("Pressed!")

我想要这个没有按下！"被垃圾邮件但只打印一次.

I would like this without "Pressed!" being spammed but only printed once.

推荐答案

因为在 while 循环中，当按下 f 键时，GetAsyncKeyState 将检测到 f 键始终处于按下状态.结果，重复调用 print 语句.

Because in the while loop, when the f key is pressed, GetAsyncKeyState will detect that the f key is always in the pressed state. As a result, the print statement is called repeatedly.

试试下面的代码，你会得到你想要的结果:

Try the following code, you will get the result you want:

import win32api

while True:
    keystate = win32api.GetAsyncKeyState(0x46)&0x0001
    if keystate > 0:
       print('F pressed!')

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