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  • Linux下捕捉键盘事件

    直接上代码:

    #include <termio.h>
    #include <stdio.h>

    #include <unistd.h>

     #include <fcntl.h>

    int scanKeyboard()
    {
        int in;
        struct termios new_settings;
        struct termios stored_settings;
        tcgetattr(0,&stored_settings);
        new_settings = stored_settings;
        new_settings.c_lflag &= (~ICANON);
        new_settings.c_cc[VTIME] = 0;
        tcgetattr(0,&stored_settings);
        new_settings.c_cc[VMIN] = 1;
        tcsetattr(0,TCSANOW,&new_settings);
         
        in = getchar();
         
        tcsetattr(0,TCSANOW,&stored_settings);
        return in;
    }
    
    int KeyTest()
    {
        return scanKeyboard();
    }
    
    // 这个函数是跨平台的
    int KeyTestNew()
        {
    #ifdef _WIN32
            HANDLE keyboard = GetStdHandle(STD_INPUT_HANDLE);
            DWORD dw, num;
            if (!::GetNumberOfConsoleInputEvents(keyboard, &num) || num == 0) {
                return 0;
            }
            for (int i = 0; i < (int)num; ++i) {
                INPUT_RECORD input;
                ::ReadConsoleInputA(keyboard, &input, 1, (LPDWORD)(&dw));
                if (input.EventType == KEY_EVENT && !input.Event.KeyEvent.bKeyDown) {
                    //return (int)(input.Event.KeyEvent.uChar.AsciiChar);
                    return (int)(input.Event.KeyEvent.wVirtualKeyCode);
                }
            }
            return 0;
    #endif
    #ifdef __linux__
            struct termios oldt, newt;
            int c, oldf;
            tcgetattr(STDIN_FILENO, &oldt);
            newt = oldt;
            newt.c_lflag &= ~(ICANON | ECHO);
            tcsetattr(STDIN_FILENO, TCSANOW, &newt);
            oldf = fcntl(STDIN_FILENO, F_GETFL, 0);
            fcntl(STDIN_FILENO, F_SETFL, oldf | O_NONBLOCK);
            c = getchar();
            tcsetattr(STDIN_FILENO, TCSANOW, &oldt);
            fcntl(STDIN_FILENO, F_SETFL, oldf);
            if (EOF != c) {
                if (c >= 'a' && c <= 'z') {
                    return (c - 'a' + 'A');
                } else {
                    return c;
                }
            } else {
                return 0;
            }
    #endif
        }
    
    int main()
    {
        while(1)
        {
            int nNum = KeyTest();
            printf("nNum:%d
    ",nNum);
        }
        return 0;
    }
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  • 原文地址:https://www.cnblogs.com/xcywt/p/12366052.html
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