Windows 系统下的 vs 中可以使用 _kbhit() 函数来获取键盘事件，使用时需要加入 conio.h 头文件，例：

实例

#include <conio.h> #include <iostream> using namespace std; int main() { int ch; while (1){ if (_kbhit()){//如果有按键按下，则_kbhit()函数返回真 ch = _getch();//使用_getch()函数获取按下的键值 cout << ch; if (ch == 27){ break; }//当按下ESC时循环，ESC键的键值时27. } } system("pause"); }

在 Unix/Linux 下，并没有提供 kbhit() 函数。我们可以自己来实现 kbhit() 程序。

实例

#include <stdio.h> #include <termios.h> static struct termios initial_settings, new_settings; static int peek_character = -1; void init_keyboard(void); void close_keyboard(void); int kbhit(void); int readch(void); void init_keyboard() { tcgetattr(0,&initial_settings); new_settings = initial_settings; new_settings.c_lflag |= ICANON; new_settings.c_lflag |= ECHO; new_settings.c_lflag |= ISIG; new_settings.c_cc[VMIN] = 1; new_settings.c_cc[VTIME] = 0; tcsetattr(0, TCSANOW, &new_settings); } void close_keyboard() { tcsetattr(0, TCSANOW, &initial_settings); } int kbhit() { unsigned char ch; int nread; if (peek_character != -1) return 1; new_settings.c_cc[VMIN]=0; tcsetattr(0, TCSANOW, &new_settings); nread = read(0,&ch,1); new_settings.c_cc[VMIN]=1; tcsetattr(0, TCSANOW, &new_settings); if(nread == 1) { peek_character = ch; return 1; } return 0; } int readch() { char ch; if(peek_character != -1) { ch = peek_character; peek_character = -1; return ch; } read(0,&ch,1); return ch; } int main() { init_keyboard(); while(1) { kbhit(); printf("\n%d\n", readch()); } close_keyboard(); return 0; }