C++捕捉按键

将无限循环放在工作线程中，并在每次迭代中让它休眠一段时间。 C++11 使这变得非常简单：

#include <thread>
#include <chrono>
std::chrono::milliseconds THREAD_WAIT = 50;
int keypress = -1;
void GetKeyPress()
{
   while (1)
   {
       for(i = 8; i <= 190; i++)
       {
          int k = GetAsyncKeyState(i);
          if (/*whatever condition needs to be satisfied*/)
              keypress = k;
       }
       if (keypress != -1) break; //Use this only if you have td.join() below
       std::this_thread::sleep_for(THREAD_WAIT);
   }
}
int main(void)
{
   ...
   std::thread td( GetKeyPress );
   td.join(); //If you want to block until the user presses a key, otherwise remove.
   //If no join(), do the rest of your program, checking in on keypress when need be
   return 0;
}

请查看以下链接，该链接解释了正确使用GetAsyncKeyState（）的示例代码。http://www.mpgh.net/forum/31-c-c-programming/120656-proper-use-getasynckeystate.html

希望此链接可以帮助您解决问题

编辑：GetAsyncKeyState（） 函数对于您要执行的操作并不理想。

它所做的只是简单地检查键盘上某个键的实际电流为纳秒的位置。这样做几乎总是不正确的。

相反，请使用正确的输入函数读取控制台输入。请在下面找到示例代码。

#include <stdio.h>
#include <windows.h>
int main()
{
    DWORD        mode;          /* Preserved console mode */
    INPUT_RECORD event;         /* Input event */
    BOOL         done = FALSE;  /* Program termination flag */
    unsigned int counter = 0;   /* The number of times 'Esc' is pressed */
    /* Don't use binary for text files, OK?  ;-) */
    FILE* myfile = fopen( "example.txt", "w" );
    /* Get the console input handle */
    HANDLE hstdin = GetStdHandle( STD_INPUT_HANDLE );
    /* Preserve the original console mode */
    GetConsoleMode( hstdin, &mode );
    /* Set to no line-buffering, no echo, no special-key-processing */
    SetConsoleMode( hstdin, 0 );
    /* Give the user instructions */
    printf(
        "Press Escape as many times as you like.n"
        "Press anything else to quit.nn"
        );
    while (!done)
    {
        if (WaitForSingleObject( hstdin, 0 ) == WAIT_OBJECT_0)  /* if kbhit */
        {
            DWORD count;  /* ignored */
            /* Get the input event */
            ReadConsoleInput( hstdin, &event, 1, &count );
            /* Only respond to key release events */
            if ((event.EventType == KEY_EVENT)
            &&  !event.Event.KeyEvent.bKeyDown)
                switch (event.Event.KeyEvent.wVirtualKeyCode)
                {
                    case VK_ESCAPE:
                        counter++;
                        fprintf( myfile, "Escape: %dn", counter );
                        printf( "Button pressed!n" );
                        break;
                    default:
                        done = TRUE;
                }
        }
    }
    /* All done! */
    printf( "You pressed the Escape key %d timesn", counter );
    fclose( myfile );
    SetConsoleMode( hstdin, mode );
    return 0;
}

您可以使用

while (!kbhit());

这可能会有所帮助。