如何使用C检测特殊键 [英] How to detect special keys using C

问题描述

Hii，

我需要使用C代码来检测F1键的按下情况

我尝试了此代码，但不适用于F1

Hii,

I need to detect the press of F1 key using C code

I tried this code, but it wont work for F1

   printf("Press F1 key to continue\n");
   while(getch() == 0x3b)
   {
       printf("\n F1 Pressed");
       getch();
   }

  

  

推荐答案

MSDN 说getch()函数已被弃用，建议使用

The MSDN says that the getch() function is deprecated and suggest to use the _getch() function[^] instead. Its documentation states:

The _getch and_getwch functions read a single character from the console without echoing the character. None of these functions can be used to read CTRL+C.
When reading a function key or an arrow key, each function must be called twice; the first call returns 0 or 0xE0, and the second call returns the actual key code.

These functions lock the calling thread and are therefore thread-safe. For non-locking versions, see _getch_nolock, _getwch_nolock.

I think that this should work properly:

printf("Press F1 key to continue.\n");
while (true)
{
   int c = _getch();
   if (c != 0x00 && c != 0xE0) continue;
   if (_getch() == 0x3B) break;
}

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