问题标题: 我又来问了

#include<iomanip>
#include<stdio.h>
#include<cstdlib>
#include<ctime>
#include<iostream>
#include<windows.h>
using namespace std;
int main(){
    srand(time(0)); 
    CONSOLE_CURSOR_INFO info = { 1, 0 };
    HANDLE hand = GetStdHandle( STD_OUTPUT_HANDLE );
    COORD coord={ 0, 0 };
    POINT pt={ 0, 0 };
    SetConsoleCursorInfo( hand, &info );
    std::cout<<"按空格键结束选定";
    while(1){
        SetConsoleCursorPosition( hand, coord );
        GetCursorPos ( &pt );
        std :: cout << pt.x<<','<<pt.y<<std::setw(10)<<"\0"<<std::endl;
        if(GetAsyncKeyState(VK_SPACE)){
            break;
        }
    }
    int a,b;
    std::cout<<"请输入x坐标"<<endl; 
    std::cin>>a;
    std::cout<<"请输入y坐标"<<endl; 
    std::cin>>b;
    system("cls");
    std::cout<<"按空格键结束连点";
    Sleep(2000);
    system("cls");
    while(1){
        if(GetAsyncKeyState(VK_SPACE)){
            SetCursorPos(a,b);
            mouse_event(MOUSEEVENTF_LEFTDOWN|MOUSEEVENTF_LEFTUP,0,0,0,0);
            Sleep(30);
            if(GetAsyncKeyState(VK_SPACE)){
                break;
            }
        }   
    }
    return 0;
}

第一个判断我按空格不起作用