如何按下最后一个键？ [英] How to get the last key pressed?
问题描述
大家好，这就是我写的：
if（kbhit（））{
a = [某些函数返回最后一个键压制];
doaction（a）;
}
doaction（）是我写的一个函数，但没关系。重要的是如何从键盘获取角色而不中断执行就像getch（）一样。我正在考虑制作游戏，所以我需要游戏不要等待玩家按键，游戏应该继续。通过使用kbhit（），我知道是否按下了一个键，但我知道哪个键是。这是我目前面临的问题。如果有什么我没有写清楚的方式，请告诉我。
Hi guys, this is what i wrote:
if(kbhit()){
a=[some function returning last key pressed];
doaction(a);
}
doaction() is a function i wrote but it doesnt matter. What does matter is how to get a character from keyboard without interrupting execution just like getch() does. I am thinking of making a game so i need the game not to wait for the player to press a key, the game should go on. By using kbhit() i know whether a key was pressed, but i dunno which key. That is the problem i am currently facing. If there is something i didn''t write in a clear way, please let me know it.
推荐答案
我会通过在任何系统中注册信号处理程序来做到这一点你的使用。我不知道在Windows中调用它是什么（是的，我假设您使用的是Windows），但总有一些方法可以说每当事件X发生时，调用函数Y - 只要按下按键就可以请求调用你的函数，这样就可以不用轮询来查找压力，你的应用程序会在进入时通知你。
I would do this by registering a signal handler with whatever system your using. I don''t know what its called in Windows (yes, I assume your using windows) but there is always some way you can say "whenever event X occurs, call function Y" - just request to have your function called whenever a key is pressed, that way instead of polling all the time looking for presses your app gets notified of when one comes in.
哦，我只是看看kbhit（）做了什么......看起来你可以像这样使用getch（）
Oh, I just looked at what kbhit() does... It looks like you might be able to use getch() like this
我会通过使用您使用的任何系统注册信号处理程序来完成此操作。我不知道在Windows中调用它是什么（是的，我假设您使用的是Windows），但总有一些方法可以说每当事件X发生时，调用函数Y - 只需按下按键就可以调用你的函数，这样就可以不用轮询来查找压力，当你的应用程序进入时，你的应用会得到通知。
I would do this by registering a signal handler with whatever system your using. I don''t know what its called in Windows (yes, I assume your using windows) but there is always some way you can say "whenever event X occurs, call function Y" - just request to have your function called whenever a key is pressed, that way instead of polling all the time looking for presses your app gets notified of when one comes in.
但我的意思是，我怎么能用c ++做到这一点，我能想到的一种方式是while
但是我仍然无法按下最后一个键
But i mean, how can i do that in c++, the one way i can think of is by "while"
but i still can''t get the last key pressed
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