Refresh of individual keys for keyboards in C + +

Operating Environment Vs2013

To enable the use of keystrokes in small games.

In the game often put the main behavior in the while () so the usual keyboard input function is no longer used, because it has its pause effect. And this is not allowed in the game.

And the game often uses a few keys, so if you can find a key to determine whether the algorithm is pressed, then the same can solve the problem.

Test 3.cpp: Defines the entry point of the console application.
//

#include "stdafx.h"
#include <iostream>

#include <windows.h>

using namespace Std;
#define Key_down (Vk_noname) ((Getasynckeystate (vk_noname) & 0x8000)? 1:0)//Three mesh operator,

void Fun (char c)
{
if (Key_down (c)) {cout << "character:" << c << Endl; Sleep (1000); }
else{cout << "not detected! "<< Endl;}
}

int _tmain (int argc, _tchar* argv[])
{
while (true)
{
Fun (' A ');
Sleep (7);
}
return 0;
}

Refresh of individual keys for keyboards in C + +