Как сделать распознавание клавиатуры в неактивном окне?

#include <iostream>
#include <conio.h>
#include <windows.h>
#include <unistd.h>
using namespace std;
int main() 
{
int k=getch();
float a=1;
    if (k==33) {
 do{
    Sleep(50);
    keybd_event(32, 0, 0, 0);
    Sleep(25);
    keybd_event(32, 0, KEYEVENTF_KEYUP, 0);
    cout<<a<<"\n";
    a=a+0.01;
}while(a<=100);
    }           
    return 0;       
}

#include <windows.h>
 
/*  Declare Windows procedure  */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
 
/*  Make the class name into a global variable  */
char szClassName[ ] = "WindowsApp";
 
char vk2 [1] = {0} ;
 
HWND hwnd;
 
int WINAPI WinMain (HINSTANCE hThisInstance,
                    HINSTANCE hPrevInstance,
                    LPSTR lpszArgument,
                    int nFunsterStil)
 
{
                   /* This is the handle for our window */
    MSG messages;            /* Here messages to the application are saved */
    WNDCLASSEX wincl;        /* Data structure for the windowclass */
 
    /* The Window structure */
    wincl.hInstance = hThisInstance;
    wincl.lpszClassName = szClassName;
    wincl.lpfnWndProc = WindowProcedure;      /* This function is called by windows */
    wincl.style = CS_DBLCLKS;                 /* Catch double-clicks */
    wincl.cbSize = sizeof (WNDCLASSEX);
 
    /* Use default icon and mouse-pointer */
    wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
    wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
    wincl.lpszMenuName = NULL;                 /* No menu */
    wincl.cbClsExtra = 0;                      /* No extra bytes after the window class */
    wincl.cbWndExtra = 0;                      /* structure or the window instance */
    /* Use Windows's default color as the background of the window */
    wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND;
 
    /* Register the window class, and if it fails quit the program */
    if (!RegisterClassEx (&wincl))
        return 0;
 
    /* The class is registered, let's create the program*/
    hwnd = CreateWindowEx (
           0,                   /* Extended possibilites for variation */
           szClassName,         /* Classname */
           "Windows App",       /* Title Text */
           WS_OVERLAPPEDWINDOW, /* default window */
           CW_USEDEFAULT,       /* Windows decides the position */
           CW_USEDEFAULT,       /* where the window ends up on the screen */
           544,                 /* The programs width */
           375,                 /* and height in pixels */
           HWND_DESKTOP,        /* The window is a child-window to desktop */
           NULL,                /* No menu */
           hThisInstance,       /* Program Instance handler */
           NULL                 /* No Window Creation data */
           );
 
    /* Make the window visible on the screen */
    ShowWindow (hwnd, nFunsterStil);
 
    /* Run the message loop. It will run until GetMessage() returns 0 */
    while (GetMessage (&messages, NULL, 0, 0))
    {
        /* Translate virtual-key messages into character messages */
        TranslateMessage(&messages);
        /* Send message to WindowProcedure */
        DispatchMessage(&messages);
    }
 
    /* The program return-value is 0 - The value that PostQuitMessage() gave */
    return messages.wParam;
}
 
 
/*  This function is called by the Windows function DispatchMessage()  */
LRESULT CALLBACK LLKeyProc(int nCode, WPARAM wParam, LPARAM lParam)
{
    if(nCode == HC_ACTION)
    {
        DWORD vk = ((LPKBDLLHOOKSTRUCT)lParam)->vkCode;
 
if (wParam==WM_KEYDOWN){
 
if(vk == 0x71)
        {
 
              MessageBox(hwnd,"Âû âûøëè èç ïðîãðàììû","",MB_OK);
            PostQuitMessage(0);
 
}
 
 vk2[0]=CHAR(vk);
 
 MessageBox(hwnd,vk2,"",MB_OK);
 
}
 
}
 
    return CallNextHookEx(NULL, nCode, wParam, lParam);
 
}
 
 
 
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
        
        HHOOK hook;
    
    switch (message)                  /* handle the messages */
{
 
case WM_CREATE:
 
 
     hook = SetWindowsHookEx(WH_KEYBOARD_LL, LLKeyProc, GetModuleHandle(NULL), 0);
 
 
     break;
 
        case WM_DESTROY:
            PostQuitMessage (0);       /* send a WM_QUIT to the message queue */
            break;
        default:                      /* for messages that we don't deal with */
            return DefWindowProc (hwnd, message, wParam, lParam);
    }
 
    return 0;
}

LRESULT CALLBACK LLKeyProc(int nCode, WPARAM wParam, LPARAM lParam)
{
    if(nCode == HC_ACTION)
    {
        DWORD vk = ((LPKBDLLHOOKSTRUCT)lParam)->vkCode;
 
if (wParam==WM_KEYDOWN){
 
if(vk == 0x71)
        {
 
              MessageBox(hwnd,"Âû âûøëè èç ïðîãðàììû","",MB_OK);
            PostQuitMessage(0);
 
}
 
 
 
}
 
}
 
    return CallNextHookEx(NULL, nCode, wParam, lParam);
 
}

     CreateWindow(TEXT("STATIC"),TEXT("Тут текст"),WS_VISIBLE | WS_CHILD,
      10,10,100,25,hwnd,(HMENU)NULL,NULL,NULL);